CN117658391A

CN117658391A - Fish and vegetable symbiotic system and sewage treatment method thereof

Info

Publication number: CN117658391A
Application number: CN202410138159.3A
Authority: CN
Inventors: 薛晓莉; 郭显亮; 张立亚; 陈小文; 李玉江; 齐轩艺; 张秀峰
Original assignee: Beijing Zhongnong Futong Gardening Co Ltd
Current assignee: Beijing Zhongnong Futong Gardening Co Ltd
Priority date: 2024-02-01
Filing date: 2024-02-01
Publication date: 2024-03-08

Abstract

The embodiment of the application provides a fish and vegetable symbiotic system and a sewage treatment method thereof, wherein culture sewage is filtered by a filtering device, a secondary water body containing large particles obtained after filtration is fermented by a fermentation device, the fermented water body and a first-stage water body after filtration are respectively conveyed to a biological decomposition device for biological decomposition, and the decomposed water body is rich in nutrients which are easily absorbed and utilized by plants, so that water sources and nutrients are provided for the plants; simultaneously, large particles such as fish manure are fermented through fermentation equipment, and the large particles are discharged into an ecological planting bed after fermentation is completed; the device can filter and ferment large-particle matters such as fish manure, so that the large-particle matters are decomposed into nutrient matters which can be decomposed and absorbed by plants, the generation of harmful matters in the decomposition and absorption process is reduced, and meanwhile, the utilization rate of the large-particle matters such as the fish manure as fertilizer is improved.

Description

Fish and vegetable symbiotic system and sewage treatment method thereof

Technical Field

The application relates to the technical field of fish and vegetable symbiosis, in particular to a fish and vegetable symbiosis system and a sewage treatment method thereof.

Background

With the popularization of the technology of the Internet of things and the combination of pure organic cultivation and planting in the current stage, more and more capital is rushed to the field of indoor cultivation and cultivation with higher food safety, such as fish and vegetable symbiosis. The fish and vegetable symbiosis is a novel compound cultivation system, which adopts two original completely different farming technologies of aquaculture and vegetable production, and achieves scientific synergistic symbiosis through ingenious ecological design, thereby realizing ecological symbiosis effect of normal growth of fish and vegetable without changing water and water. The method has the advantages that a harmonious ecological balance relation among animals, plants and microorganisms is achieved, and the method is a low-carbon production mode with sustainable circulation and zero emission in the future and is the most effective method for effectively solving the agricultural ecological crisis.

The fish and vegetable symbiotic system is a popular planting and breeding combination system at present, sewage generated by breeding has nutrient elements, and after being treated by equipment and microorganism water, the nutrient elements are absorbed and utilized by plants, so that water quality is purified, and the water flows into a breeding pool for recycling, and the ecological environment is protected. However, the existing fish and vegetable symbiotic system has some problems that the treatment of fish manure residual baits and the like in the culture sewage is not thorough, on one hand, the planting bed is easy to be blocked and polluted, and on the other hand, the plants cannot obtain sufficient nutrients.

Disclosure of Invention

The embodiment of the application provides a fish and vegetable symbiotic system and a sewage treatment method thereof, so as to solve the problems of incomplete treatment, blockage and pollution to a planting bed of waste materials such as fish manure residual baits and the like of the existing fish and vegetable symbiotic system.

In order to achieve the above purpose, the present application provides the following technical solutions:

the sewage treatment method of the fish and vegetable symbiotic system provided by the embodiment of the application comprises the following steps:

filtering the culture sewage by a filtering device to obtain a first-stage water body after filtering and a second-stage water body containing large particles;

fermenting the secondary water body containing large particles through fermentation equipment, and discharging the fermented water body into biological decomposition equipment;

And respectively carrying out biological decomposition on the primary water body and the fermented secondary water body through the biological decomposition equipment, and discharging the decomposed water body into an ecological planting bed.

The application also provides a fish and vegetable symbiotic system applying the method, which comprises the following steps:

the aquaculture device is used for aquaculture of aquatic organisms;

the filtering equipment comprises a separation sedimentation chamber and a separation filtering device, wherein the separation filtering device is positioned in the separation sedimentation chamber and vertically divides the separation sedimentation chamber into an upper separation chamber and a lower separation chamber, and the upper separation chamber is provided with a water outlet; the lower separation chamber is provided with a water inlet and a drain outlet positioned at the bottom of the lower separation chamber, the water inlet is connected with the cultivation equipment, and the drain outlet is used for discharging separated large fish manure particles;

the fermentation equipment comprises a fermentation box, a liquid inlet device and a liquid discharge device; the inner cavity of the fermentation tank is provided with a filtering device for filtering sewage entering the fermentation tank; the liquid inlet device is connected with the sewage outlet and is arranged opposite to the filtering device; the liquid discharge device is connected with the bottom of the fermentation tank and is used for discharging the sewage filtered by the filtering device;

The biological decomposition device is connected with the water outlet of the filtering device and is used for performing biological decomposition on sewage;

an ecological planting bed connected with the biological decomposition equipment, wherein the ecological planting bed is used for planting plants;

and one end of the water collecting device is connected with the ecological planting bed, and the other end of the water collecting device is connected with the cultivation device and is used for conveying the water body of the ecological planting bed into the cultivation device.

Compared with the prior art, the fish and vegetable symbiotic system and the sewage treatment method thereof have the following technical effects:

filtering the culture sewage by a filtering device, fermenting the secondary water body containing large particles obtained after filtering by a fermenting device, respectively conveying the fermented water body and the filtered primary water body to a biological decomposing device for biological decomposition, wherein the decomposed water body is rich in nutrient substances which are easily absorbed and utilized by plants, and providing water sources and nutrients for the plants; simultaneously, large-particle matters such as fish manure and the like are fermented through fermentation equipment, and fermentation liquid is discharged into biological decomposition equipment after fermentation is finished; the device can filter and ferment large-particle matters such as fish manure, so that the large-particle matters are decomposed into nutrient matters which can be absorbed by plants, the generation of harmful matters in the decomposition and absorption process is reduced, and meanwhile, the utilization rate of the large-particle matters such as the fish manure as fertilizer is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a block flow diagram of a sewage treatment method according to an embodiment of the present application;

fig. 2 is a block diagram of a fish and vegetable symbiotic system according to an embodiment of the present disclosure;

fig. 3 is a system schematic diagram of a fish and vegetable symbiotic system according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a cultivation device according to an embodiment of the present disclosure;

FIG. 5 is a schematic connection diagram of a cultivation device and a water collecting device according to an embodiment of the present application;

FIG. 6 is a schematic view of the installation structure of the filtration apparatus, fermentation apparatus and bio-decomposition apparatus provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of a filtering apparatus according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of an installation structure of a hydrodynamic device according to an embodiment of the present application;

FIG. 9 is a schematic view of the installation structure of the hydrodynamic device and the stirring device according to the embodiment of the present application;

FIG. 10 is a schematic diagram of a fermentation apparatus according to an embodiment of the present disclosure;

FIG. 11 is a schematic cross-sectional view of FIG. 10;

FIG. 12 is a schematic cross-sectional view of a bio-resolution device according to an embodiment of the present application;

FIG. 13 is a schematic view of the appearance structure of FIG. 12;

FIG. 14 is a schematic view of the siphon assembly of the bio-decomposition apparatus according to the embodiment of the present application;

FIG. 15 is a schematic view of the explosive structure of FIG. 14;

FIG. 16 is a schematic view of an ecological planting bed according to an embodiment of the present disclosure;

FIG. 17 is a schematic view of an ecological planting bed according to another embodiment of the present disclosure;

FIG. 18 is a schematic cross-sectional view of FIG. 16;

FIG. 19 is a schematic cross-sectional view of FIG. 17;

FIG. 20 is a schematic view of a water outlet assembly according to an embodiment of the present disclosure;

fig. 21 is a schematic view of the explosive structure of fig. 20.

The figures are marked as follows:

the device comprises a filtering device 100, a biological decomposition device 200, a fermentation device 300, an ecological planting bed 400, a cultivation device 600 and a water collecting device 700;

the separation sedimentation chamber 110, the separation filtration device 120, the stirring device 130, the water inlet pipeline 140, the power chamber 150, the connecting pipeline 160, the hydrodynamic device 170, the water outlet pipeline 180, the upper separation chamber 111, the lower separation chamber 112, the sewage collecting cavity 113, the sewage outlet 114, the water outlet 115, the turbine 171, the turbine shaft 172, the driving wheel 173, the driven wheel 174, the driven rotation shaft 175, the wheel connecting piece 176 and the rotation shaft fixing piece 177;

The decomposition tank 210, the substrate filter layer 220, the blowdown layer 230, the substrate storage chamber 240, the blowdown chamber 250, the drain chamber 260, the siphon assembly 290, the blowdown outlet 231, the blowdown filter screen 232, the water inlet pipe 271, the water separator 272, the rinse pipe 281, the water sprayer 282, the first sleeve 291, the drain pipe 292, the second sleeve 293, the support frame 294, the siphon inlet 2911, the top water inlet 2921, and the bottom water outlet 2922;

the fermentation tank 310, the filtering device 320, the liquid inlet device 330, the liquid discharge device 340, the sewage disposal device 350, the internal circulation device 360, the external circulation device 370, the heating device 380, the liquid inlet pipeline 331, the liquid inlet control valve 332, the first liquid level detection component 333, the liquid discharge pumping component 341, the liquid discharge control valve 342, the second liquid level detection component 343, the liquid discharge pipeline 345, the sewage disposal pipeline 351, the sewage disposal pumping component 352, the internal circulation pipeline 361, the external circulation pipeline 371 and the external circulation water sprayer 372;

the planting bed body 410, the water inlet assembly 420, the water outlet assembly 430, the blind pipe 440, the substrate layer 450, the grating plate 460, the water pretreatment area 470, the biochemical balls 480, the first sleeve 431, the drain pipe 432, the second sleeve 433, the support frame 434, the siphon liquid inlet 4311, the top water inlet 4321 and the bottom water outlet 4322;

A culture pond 610, a culture drain pipe 620, a collecting pipe 630, a fish toilet 640 and a culture liquid return pipe 650;

sump 710, sump pumping device 720, and water suction line 730.

Detailed Description

The embodiment of the invention discloses a fish and vegetable symbiotic system and a sewage treatment method thereof, which aim to solve the problems of incomplete treatment, blockage and pollution to a planting bed of waste materials such as fish manure residual baits and the like of the existing fish and vegetable symbiotic system.

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

Referring to fig. 1, fig. 1 is a flow chart of a sewage treatment method according to an embodiment of the present application.

In a specific embodiment, the sewage treatment method of the fish and vegetable symbiotic system provided by the application comprises the following steps:

s11: filtering the culture sewage by a filtering device to obtain a first-stage water body after filtering and a second-stage water body containing large particles;

S12: fermenting the secondary water body containing large particles through fermentation equipment, and discharging the fermented water body into biological decomposition equipment;

s13: and respectively carrying out biological decomposition on the primary water body and the fermented secondary water body through the biological decomposition equipment, and discharging the decomposed water body into an ecological planting bed.

The filtering device may be a vertical flow separator (vertical flow sedimentation tank), which is a mature prior art, and the specific structure is not described herein again; it can be understood that the diameter of the particles of the first-stage water body after filtration is smaller than that of the particles contained in the second-stage water body, and the first-stage water body enters the biological decomposition equipment for biological decomposition.

The secondary water body containing large particles is fermented by the fermentation equipment 300, the fermented water body (fermentation liquor) is discharged into the biological decomposition equipment 200 for biological decomposition, and is discharged into the ecological planting bed 400 after decomposition, and it can be understood that the large particles such as fish manure residual bait in the culture sewage can be treated after filtration, fermentation and biological decomposition by the filtration equipment 100, the fermentation equipment 300 and the biological decomposition equipment 200, so that the large particles are decomposed into nutrient substances which can be absorbed by plants, harmful substances which are directly discharged into the ecological planting bed 400 and are generated in the decomposition and absorption process are reduced, and meanwhile, the utilization rate of the large particles such as the fish manure as fertilizer is improved.

Correspondingly, the fish and vegetable symbiotic system provided by the application comprises:

a farming apparatus 600 for farming aquatic organisms;

the filtering device 100 comprises a separation sedimentation chamber 110 and a separation filtering device 120, wherein the separation filtering device 120 is positioned in the separation sedimentation chamber 110 and divides the separation sedimentation chamber 110 into an upper separation chamber 111 and a lower separation chamber 112 along the vertical direction, and the upper separation chamber 111 is provided with a water outlet 115; the lower separation chamber 112 is provided with a water inlet and a drain outlet 114 positioned at the bottom of the lower separation chamber 112, the water inlet is connected with the cultivation equipment 600, and the drain outlet 114 is used for discharging separated large fish manure particles;

fermentation apparatus 300 comprising a fermentation tank 310, a liquid inlet device 330 and a liquid outlet device 340; the inner cavity of the fermentation tank 310 is provided with a filtering device 320 for filtering the sewage entering the fermentation tank 310; the liquid inlet device 330 is connected with the sewage outlet 114 and is arranged opposite to the filtering device 320; the drain device 340 is connected to the bottom of the fermentation tank 310, and is used for draining the sewage filtered by the filtering device 320 into the biological decomposition device 200;

the biological decomposition device 200 is connected with the water outlet 115 of the filtering device 100 and is used for biological decomposition of sewage;

an ecological planting bed 400 connected with the biological decomposition device 200, wherein the ecological planting bed 400 is used for planting plants, and the plants are utilized to absorb nutrient substances to purify water;

And one end of the water collecting device 700 is connected with the ecological planting bed 400, and the other end of the water collecting device is connected with the cultivation device 600, and is used for conveying the water body of the ecological planting bed 400 into the cultivation device 600.

The application provides a biological decomposition equipment 200, including decomposition box 210, its inside is the cavity, the inner chamber of decomposition box 210 has matrix filter layer 220 and blowdown layer 230, matrix filter layer 220 and blowdown layer 230 set gradually from top to bottom along vertical, matrix filter layer 220 is used for holding the decomposition organism, and be connected with filtering equipment's delivery port, carry out biological decomposition to sewage, and can filter big particulate matter, matrix filter layer 220 forms matrix storage chamber 240 with the inner wall of decomposition box 210 of top, matrix storage chamber 240 is connected with filtering equipment 100's delivery port 115 and drain 340 respectively, this matrix storage chamber 240 is used for bearing the matrix and entraps particulate matter such as fish excrement, provide the habitat for the earthworm in the matrix storage chamber 240 and can carry out the biological decomposition of particulate matter such as fish excrement, sewage and the little particulate matter after the decomposition leak into lower floor blowdown layer 230. The substrate filter layer 220 is preferably a plate-like structure with filter holes provided therein to facilitate entrapment of large particulate matter. In other embodiments, the decomposing organism may be a microorganism or other organism having the ability to decompose fish manure, and the specific organism species of the decomposing organism may be set as desired.

The sewage draining layer 230, the substrate filtering layer 220 and the inner wall of the decomposition tank 210 form a sewage draining cavity 250, the sewage draining cavity 250 is provided with a sewage draining outlet 231 capable of discharging sewage with small particles outwards, and the part of sewage and the small particles can be discharged out of the decomposition device through the sewage draining cavity 250 and treated by adopting other decomposition or fermentation devices. The drain 231 is preferably located at the bottom of the drain chamber 250 and is disposed through the inner wall of the decomposition tank 210 to enable communication with external piping. The soil discharge layer 230 is also provided with filter holes, and the number of filter holes of the soil discharge layer 230 is smaller than that of the matrix filter layer 220. The soil discharge layer 230 may also be provided in a plate-like structure on which filter holes are provided in order to trap small particles. Preferably, the peripheral edges of both the substrate filter layer 220 and the soil layer 230 are fixed to the inner wall of the decomposition tank 210 to achieve separation of the upper and lower layers.

The sewage filtered by the sewage discharging layer 230 enters the sewage discharging chamber 260 and is discharged out of the decomposition tank 210 through the sewage discharging chamber 260, and similarly, a water discharging outlet is provided in the sewage discharging chamber 260 to realize sewage discharging.

In the application, the filtering and separation of sewage are realized by arranging the matrix filtering layer 220 and the sewage discharging layer 230 in the decomposition tank 210 in sequence from top to bottom along the vertical direction; the substrate filter layer 220 carries the substrate and entraps large particles, the substrate filter layer 240 provides a habitat for biological decomposition, decomposed sewage and small particles enter the sewage discharge layer 230, the small particles and sewage are discharged from the sewage discharge outlet 231, and the rest of sewage enters the sewage discharge cavity 260 through the sewage discharge layer 230 to be discharged; the above device performs biological decomposition on sewage through the substrate filter layer 220, and performs small particle filtration on sewage through the sewage discharge layer 230, so as to treat the cultured sewage, so that the sewage discharged from the water discharge cavity 260 can be decomposed by microorganisms for plant absorption and utilization, and further, the water quality is purified for culturing and recycling.

In step S13, the first-stage water body and the fermented second-stage water body are respectively biodegraded by a biodegrading device, which specifically includes:

the earthworms and microorganisms in the biological decomposition equipment are used for carrying out biological decomposition on the water body, and then the water body is filtered for a plurality of times and discharged into an ecological planting bed.

Specifically, biological matrixes are loaded through the matrix storage cavity, particulate matters such as fish manure and the like are trapped, and water in the drainage cavity is discharged into the ecological planting bed after twice filtration is performed through the matrix filter layer and the sewage layer.

As shown in fig. 10 to 11, the fermentation apparatus includes a fermentation tank 310, a liquid inlet device 330 and a liquid outlet device 340; the inner cavity of the fermentation tank 310 is provided with a filtering device 320 for filtering the water body entering the fermentation tank 310; the liquid inlet device 330 is connected with the sewage outlet of the filtering equipment 100 and is arranged opposite to the filtering device 320; the drainage device 340 is connected with the bottom of the fermentation tank 310 and is used for draining the water body filtered by the filtering device 320; the fermenting case 310 is preferably a cuboid structure, which has a hollow inner cavity, the inner cavity is provided with a filtering device 320, the filtering device 320 is preferably a conical funnel-shaped filter screen, and in other embodiments, the fermenting case can also be provided with a round table-shaped filter screen, and the specific structure of the filter screen can be set according to requirements; the peripheral edge of the filter screen is fixed with the top edge of the fermentation tank 310, the filtering device 320 divides the fermentation tank 310 into two parts from top to bottom, a filter cavity formed by the filter screen, and a liquid storage cavity formed by the outer wall of the filter screen and the inner wall of the fermentation tank 310. The liquid inlet device 330 includes a liquid inlet pipe 331, the liquid inlet pipe 331 is located at the top of the fermentation tank 310 and is opposite to the filtering device 320, so that a water body entering the fermentation tank 310 from the filtering apparatus 100 is filtered by the filtering device 320, and the filtered water body flows down into the bottom of the fermentation tank 310, i.e. the liquid storage cavity. The drain pipeline 345 of the drain device 340 is connected with the bottom of the fermentation tank 310, and is used for draining the clear water body in the liquid storage cavity, and the liquid can be directly conveyed to the biological decomposition device 200 for biological decomposition as the liquid storage cavity contains less fish manure and other particles without additional fermentation.

For large particles such as fish manure, the large particles remain in a filter cavity of the filter device 320 for fermentation, and when the environment temperature is proper, for example, 25-40 ℃, the large particles can be directly fermented under natural conditions; when the ambient temperature does not meet the fermentation temperature, the fermentation tank 310 may be warmed up by providing the heating device 380 so as to meet the fermentation temperature.

The fermentation equipment 300 can filter and ferment large-particle matters such as fish manure, so that the large-particle matters are decomposed into nutrient substances which can be absorbed by plants, the generation of harmful substances in the decomposition and absorption process is reduced, and meanwhile, the utilization rate of the large-particle matters such as the fish manure as fertilizer is improved.

In the sewage treatment method, the fermentation equipment is used for fermenting the secondary water body containing the large particles, and the method specifically comprises the following steps:

filtering the secondary water body containing the large particles to obtain a tertiary water body containing the large particles;

and fermenting the three-stage water body under preset fermentation conditions.

It is understood that the tertiary water containing large particles is the residue and water in the fermentation equipment, mainly in the filter chamber of the filter device.

The preset fermentation conditions comprise preset fermentation temperature and fermentation humidity and internal circulation operation for preset time or preset times, so that full fermentation of the three-level water body is ensured, and the fermentation effect is optimized.

In the sewage treatment method, the method further comprises the following steps:

s14: and nitrifying the water body in the ecological planting bed.

The ecological planting bed 400 provided by the application comprises a planting bed body 410 and a plurality of blind pipes 440; the planting bed body 410 is a rectangular cube structure with an upper opening, which can adopt a geotechnical structure or a bracket and waterproof cloth structure, the inner cavity of the planting bed body 410 is filled with a matrix layer 450, the matrix layer 450 comprises cobblestones or volcanic rocks and the like, the rest space of the planting bed body 410 is filled with the matrix to a preset height, and in other embodiments, the specific form of the matrix layer 450 can be set according to the requirement, and the description is omitted. The bottom of the planting bed body 410 is provided with a plurality of blind pipes 440, and all the blind pipes 440 are arranged along the transverse direction of the planting bed body 410 and extend along the longitudinal direction. The blind pipe 440 has a through hole penetrating in a length direction so as to drain the water body. The two longitudinal ends of the planting bed body 410 are respectively and oppositely provided with a water inlet assembly 420 and a water outlet assembly 430, wherein the water inlet assembly 420 is positioned above the planting bed body 410, and the water outlet assembly 430 is positioned on the bottom wall of the planting bed body 410. The water inlet assembly 420 is connected to the liquid discharge device 340 and the biological decomposition device 200, and preferably, the blind pipe 440 extends longitudinally to facilitate the circulation of water at the bottom of the planting bed 410, and the blind pipe 440 is disposed at the bottom wall of the planting bed 410 at intervals in the lateral direction, for example, fastened by using a threaded fastener, and in other embodiments, the blind pipe 440 may be welded or otherwise fastened, and may be set as required.

Above-mentioned ecological planting bed 400 has water inlet subassembly 420 and play water subassembly 430 respectively at the vertical both ends of planting bed body 410, and the diapire of planting bed body 410 is equipped with a plurality of blind pipe 440, and blind pipe 440 is along vertical setting, can drain the water of water inlet subassembly 420 to play water subassembly 430, and the bottom rivers of planting bed body 410 of being convenient for are discharged, improve planting bed bottom and lead to water drainage ability, and the microorganism of being convenient for obtains sufficient oxygen, promotes reproduction metabolism and purification quality of water.

Meanwhile, a grating plate 460 is arranged at one end of the planting bed body 410, which is close to the water inlet assembly 420, two ends of the grating plate 460 in the length direction are respectively connected with the transverse side wall of the planting bed body 410, a water pretreatment area 470 is formed by the grating plate 460, the transverse side wall and the longitudinal end wall of the planting bed body 410, front-end pretreatment is carried out on the water, and preferably, biochemical balls 480 are filled in the water pretreatment area 470 so as to add pre-cultured microorganisms, thereby promoting the ecological planting bed 400 to quickly form a microbial ecological system and saving the time for culturing the microorganisms. In this embodiment, the entering water body may be pretreated, for example, the biochemical balls 480 containing the microorganism such as nitrifying bacteria are placed, so that the speed of culturing the microorganism ecological system such as nitrifying bacteria by the ecological planting bed 400 can be accelerated, and the water quality can be purified rapidly. Specifically, the water inlet assembly 420 is disposed above the planting bed 410 and opposite to the water pretreatment area 470.

As shown in fig. 4 to 5, the cultivation device 600 is used for cultivating aquatic organisms, such as fish, shrimp, etc., the cultivation device 600 provides sewage containing nutrients such as fish manure residual bait for the subsequent ecological planting bed 400, provides water source and nutrients for plants, and it can be understood that the water body after fermentation treatment is rich in nutrients easily absorbed and utilized by plants, and does not need to add chemical fertilizers, pesticides, etc. for the cultivated plants of the ecological planting bed 400, thereby reducing the planting cost, realizing fish and vegetable symbiosis, and realizing pollution-free and green planting; meanwhile, the purified water body absorbed by plants in the ecological planting bed 400 is recycled to the cultivation equipment 600 through the water collecting equipment 700, so that purified water bodies are provided for fish and shrimp organisms in the cultivation equipment 600, the cultivation cost of the aquatic organisms is further reduced, and win-win is realized.

The culture device 600 comprises a culture pond 610 and a fish manure collecting device, wherein the culture pond 610 is preferably of a cuboid or cylinder structure, preferably of a cylinder structure, the fish manure collecting device is positioned at the center of the culture pond 610 and is arranged along the vertical direction, a culture liquid discharge pipeline 620 is positioned at the bottom of the culture pond 610, and the fish manure residual bait particles collected by the fish manure collecting device and the water body are discharged out of the culture pond 610 and enter the filtering device 100 to be subjected to primary screening to obtain a filtered primary water body and a secondary water body containing large particles; the primary water body which is positioned above and filtered by the filtering equipment 100 is discharged to the biological decomposition equipment 200 through the water outlet pipeline 180, biological decomposition is carried out again through the biological decomposition equipment 200, the sewage after biological decomposition enters the sewage discharge layer 230 for small particle filtering, the sewage with small particles is discharged out of the biological decomposition equipment 200 through the sewage discharge outlet 231 of the sewage discharge cavity 250, the sewage filtered by the sewage discharge layer 230 flows into the water discharge cavity 260, and the part of sewage can be discharged into the ecological planting bed 400 for plant absorption and utilization; in addition, the secondary water containing large particles, which is separated by the filtering device 100 and then is conveyed to the fermentation device 300 for secondary treatment, the fermentation device 300 filters and ferments the secondary water, the filtered and fermented sewage enters the biological decomposition device 200, and the sewage is fermented to treat the large particle sewage, so that the large particle sewage is decomposed into nutrient substances which can be absorbed by plants, the generation of harmful substances in the decomposition and absorption process is reduced, and meanwhile, the utilization rate of large particles such as fish manure as fertilizer is improved.

It can be understood that the ecological planting bed 400 provides a planting space for plants, the drain pipe 292 of the biological decomposition device 200 is connected with the ecological planting bed 400, and sewage treated by the biological decomposition device 200 enters the ecological planting bed 400 to provide nutrients for plants.

One end of the water collecting device 700 is connected with the ecological planting bed 400, the other end is connected with the cultivation device 600, and the water body of the ecological planting bed 400 is conveyed into the cultivation device 600.

The sewage treatment method further comprises the following steps:

the culture sewage flows into the filtering equipment 100 under the action of gravity, and the filtered primary water body flows into the biological decomposition equipment 200 and the ecological planting bed 400 in sequence under the action of gravity;

the secondary water containing large particles flows into the fermentation device 300 under the action of gravity, is pumped into the biological decomposition device 200 by the pumping device, and the decomposed water flows into the ecological planting bed 400 under the action of gravity.

As shown in fig. 2 and 3, fig. 2 is a block diagram of a fish and vegetable symbiotic system according to an embodiment of the present application; fig. 3 is a system schematic diagram of a fish and vegetable symbiotic system according to an embodiment of the present disclosure. In one embodiment, in the fish and vegetable symbiotic system provided by the application, the cultivation equipment 600 and the ecological planting bed 400 are unpowered equipment, the cultivation equipment 600, the filtering equipment 100 and the biological decomposition equipment 200 are all located above the ground, and the fermentation equipment 300, the ecological planting bed 400 and the water collecting equipment 700 are located below the ground; the water level of the cultivation device 600 is higher than the top walls of the filtering device 100 and the biological decomposition device 200 respectively, the top wall of the ecological planting bed 400 and the top wall of the water collecting device 700 are lower than the ground, the bottom wall of the water collecting device 700 is lower than the bottom wall of the ecological planting bed 400, cultivation sewage flows through the filtering device 100, the biological decomposition device 200, the ecological planting bed 400 and the water collecting device 700 from the cultivation device 600, and the water body flow is realized by means of the gravitational potential energy of the water body, so that additional energy consumption is not needed, and the cultivation device is green and energy-saving; fermentation apparatus 300 is preferably located below filtration apparatus 100, which saves apparatus floor space; the water body in the biological decomposition apparatus 200 flows into the ecological planting bed 400 from the biological decomposition apparatus 200 by the height difference from the ecological planting bed 400; the liquid discharge pumping assembly 341 for the water body in the fermentation equipment 300 to pass through lifts the water body after fermentation treatment into the biological decomposition equipment 200 for biological decomposition, and the water body after fermentation treatment is rich in nutrient substances which are easily absorbed and utilized by plants, so that the plants are promoted to obtain sufficient nutrition; finally, the water body in the ecological planting bed 400 is pumped into the cultivation equipment 600 by the water collecting equipment 700 for recycling, so that the water circulation in the fish-vegetable symbiotic system is realized; it will be appreciated that when the amount of water in the farming apparatus 600 is insufficient, water may be replenished into the farming apparatus 600 via an external water supply.

The filtering apparatus 100, the fermenting apparatus 300, the bio-decomposing apparatus 200, the ecological planting bed 400, and the water collecting apparatus 700 will be described in order as follows:

example 1

As shown in fig. 6 to 9, fig. 6 is a schematic view showing the installation structure of the filtration apparatus, the fermentation apparatus and the bio-decomposition apparatus according to the embodiment of the present application; fig. 7 is a schematic structural diagram of a filtering apparatus according to an embodiment of the present disclosure; FIG. 8 is a schematic view of an installation structure of a hydrodynamic device according to an embodiment of the present application; fig. 9 is a schematic view of an installation structure of a hydrodynamic device and a stirring device according to an embodiment of the present application.

The filtration apparatus 100 comprises a separation settling chamber 110 and a separation filtration device 120; the separation filter device 120 is disposed in the separation settling chamber 110, and divides the separation settling chamber 110 into an upper separation chamber 111 and a lower separation chamber 112 vertically, preferably equally divided vertically, or the vertical height of the lower separation chamber 112 is greater than that of the upper separation chamber 111, so that the sewage is further settled in the spreading process from bottom to top. The separation filter device 120 may be provided as a grid, the specific mesh number of which may be set according to the size of the desired separated particulate matter, and the separation filter device 120 is fixed to the inner wall of the separation settling chamber 110, preferably by welding or clamping, etc., and preferably the circumferential edge of the separation filter device 120 is fixed to the inner wall of the separation settling chamber 110 by clamping.

The upper separation chamber 111 is provided with a water outlet 115, the water outlet 115 is connected with the biological decomposition equipment 200, and clear sewage in the upper separation chamber 111 is conveyed to the biological decomposition equipment for further treatment; the lower separation chamber 112 is provided with a water inlet which is connected with the cultivation equipment 600, and preferably, the water outlet 115 and the water inlet are arranged on a group of side walls which are oppositely arranged in the separation sedimentation chamber 110, so that the moving path of sewage in the separation sedimentation chamber 110 is further prolonged, and the filtering effect is optimized; thus, the separation settling chamber 110 may be provided in a rectangular parallelepiped structure or a cylindrical structure; a drain outlet 114 is arranged at the bottom of the lower separation chamber 112 and is used for discharging separated large fish manure particles; the sewage outlet 114 has a cylindrical structure, so that large particles such as fish manure can be further gathered and precipitated and then discharged into the fermentation equipment 300 at the sewage outlet 114. In this embodiment, the separation settling chamber 110 is illustrated as a cuboid structure, and is composed of four vertical side walls and a conical tank bottom which are sequentially connected, and is provided with an openable tank cover, a drain outlet 114 is arranged at the center of the conical tank bottom, the drain outlet 114 is connected with a liquid inlet device of the fermentation equipment 300, and sewage containing large particles such as fish manure is discharged into the fermentation equipment 300 for further treatment.

It will be understood that the separation filter 120 is disposed in the separation settling chamber 110 to divide the separation settling chamber 110 vertically into an upper separation chamber 111 and a lower separation chamber 112, wherein the water inlet and the sewage outlet 114 are disposed in the lower separation chamber 112, the water outlet 115 is disposed in the upper separation chamber 111, sewage enters from the lower separation chamber 112, large particles are isolated in the lower separation chamber 112 by the separation filter 120 and rise along with the inflow water level of the sewage, the large particles such as fish manure precipitated in the lower separation chamber 112 are discharged into the biological decomposition device 200 through the sewage outlet 114, thereby separating the particles from the sewage and improving the sewage treatment effect.

In order to further collect impurities such as fish manure at the bottom of the lower separation chamber 112, in some embodiments, a bottom wall of the lower separation chamber 112 is provided with a downward extending sewage collecting cavity 113, the sewage collecting cavity 113 is tapered vertically from top to bottom, a drain outlet 114 is positioned at the lowest position of the sewage collecting cavity 113, the impurities such as fish manure are collected at the drain outlet 114 under the action of gravity, the sewage collecting cavity 113 is preferably provided in a funnel shape, the drain outlet 114 is arranged at the lowest position of the sewage collecting cavity 113, and the lowest position can be arranged at the center of the horizontal projection of the sewage collecting cavity 113 so as to facilitate production and processing; meanwhile, the water flow fluctuation of the water outlet 115 and the water inlet can be reduced at the center, and impurities such as fish manure and the like can be conveniently precipitated.

In order to prevent the impurities such as fish manure at the drain outlet 114 from blocking the drain outlet 114, the filtering apparatus 100 further comprises a stirring device 130, the stirring device 130 is independently connected with a power supply to provide power, and is positioned in the separation settling chamber 110, and the drain outlet 114 is preferably arranged in the lower separation chamber 112 to stir the impurities such as the fish manure at the drain outlet 114, so as to prevent the drain outlet 114 from being blocked, when the drain outlet 114 is in a cylindrical structure, the stirring device 130 can extend into the cylindrical structure, so that the stirring effect is further improved, and the impurities such as the fish manure can conveniently enter the fermentation apparatus 300 through the drain outlet 114.

In some embodiments, the filtering apparatus 100 further includes a water inlet pipeline 140, a power chamber 150, and a connection pipeline 160 sequentially disposed, wherein a water inlet of the water inlet pipeline 140 is communicated with a water source, a water outlet of the water inlet pipeline 140 is communicated with a water inlet of the power chamber 150, a water outlet of the power chamber 150 is communicated with a water inlet of the connection pipeline 160, and a water outlet of the connection pipeline 160 is communicated with a water inlet of the separation settling chamber 110; the caliber of the water outlet of the water inlet pipeline 140 is larger than that of the water inlet of the power chamber 150; the caliber of the water outlet of the power chamber 150 is smaller than that of the water inlet of the connecting pipeline 160; the water outlet aperture of the connecting line 160 is smaller than the water inlet aperture of the separation settling chamber 110.

In order to further increase the kinetic energy of water, the caliber of the water outlet of the water inlet pipeline 140 is larger than that of the water inlet of the power chamber 150, so that when sewage enters the power chamber 150 from the water inlet pipeline 140, the flow velocity of the sewage entering the power chamber 150 is increased due to the increase of the flow velocity of the sewage, the kinetic energy of the sewage entering the power chamber 150 can be increased, and the water flow in the power chamber 150 is indirectly disturbed, so that the kinetic energy is provided for the next step into the separation sedimentation chamber 110; the caliber of the water outlet of the power chamber 150 is smaller than that of the water inlet of the connecting pipeline 160, the caliber of the water outlet of the connecting pipeline 160 is smaller than that of the water inlet of the separation sedimentation chamber 110, and the flow rate of sewage entering the separation sedimentation chamber 110 is reduced through continuous diameter variation, so that the disturbance of the sewage in the separation sedimentation chamber 110 is reduced, and the separation of impurities such as fish manure is prevented. The power chamber 150 may also be configured as a rectangular parallelepiped structure, specifically including four vertical side walls and a lateral groove bottom connected in sequence, and provided with an openable groove cover.

Further, the filtering apparatus 100 further includes a hydrodynamic device 170, which is located in the power chamber 150 and rotates under the action of hydrodynamic force to disturb the water flow in the power chamber 150, and the hydrodynamic device 170 is preferably disposed at a position opposite to the water inlet of the power chamber 150, so that the water flow entering the power chamber 150 acts on the hydrodynamic device 170 to convert kinetic energy into kinetic energy of the hydrodynamic device 170, and meanwhile, the hydrodynamic device 170 is connected with the stirring device 130 to provide power for the stirring device 130 by the kinetic energy of the sewage, so that the stirring device 130 is provided with power by the kinetic energy of the sewage itself, no additional connection power source is needed, energy sources are saved, and operation cost is reduced. Meanwhile, based on the caliber arrangement of the water inlet pipeline 140, the power chamber 150 and the connecting pipeline 160, the flow speed of sewage entering the power chamber 150 is changed through reducing, the kinetic potential energy is increased, the rotation speeds of the hydrodynamic device 170 and the stirring device 130 are increased, the turbulence effect is improved, and the energy consumption is reduced.

In some embodiments, hydrodynamic device 170 includes a turbine 171 and a turbine shaft 172, turbine shaft 172 rotatably coupled to the center of power chamber 150 to uniformly turbulate power chamber 150; the turbine shaft 172 may be rotatably coupled to the power chamber 150 by a bearing arrangement. The turbine 171 is fixedly connected with the turbine shaft 172 and is driven by water flow at the water inlet of the power chamber 150 to rotate so as to disturb the sewage in the power chamber 150, so that the sewage carrying large-particle fish manure can smoothly enter the separation sedimentation chamber 110 through the connecting pipeline 160, and the blockage at the connecting pipeline 160 is prevented.

Still further, the water power apparatus 170 further includes a driving wheel 173, a driven wheel 174, a driven rotation shaft 175, and a wheel connection 176; the driving wheel 173 is fixed on the top of the turbine shaft 172, and can be fixed by a key, and the driving wheel 173 and the turbine shaft 172 synchronously rotate under the drive of the turbine 171; the driven wheel 174 and the driven rotation shaft 175 are both positioned in the separation and precipitation chamber 110, the driven wheel 174 is fixed on the driven rotation shaft 175, and the driven rotation shaft 175 is rotatably connected with the separation and precipitation chamber 110 and rotates around the axis of the driven rotation shaft 175; the driven rotation shaft 175 is preferably disposed in the upper separation chamber 111, and the stirring device 130 is fixed to the bottom of the driven rotation shaft 175 to rotate around the axis of the driven rotation shaft 175 under the driving of the driven wheel 174; in order to achieve the transmission of power between the driving wheel 173 and the driven wheel 174, a wheel connection 176 is provided therebetween, transmitting power from the driving wheel 173 to the driven wheel 174; the wheel connection member 176 may be provided as a belt or chain, etc., and may be provided as needed; in this embodiment, a chain is preferably provided, and the driving wheel 173 and the driven wheel 174 are preferably provided as gears, so that the power transmission is more stable, and the occurrence of slipping is prevented. For the installation of the wheel connection 176 between the power chamber 150 and the separation settling chamber 110, installation notches are respectively provided on a group of side walls of the power chamber 150 and the separation settling chamber 110, which are close to each other, the wheel connection 176 respectively passes through the side walls of the power chamber 150 and the separation settling chamber 110, and at the same time, the installation notches are vertically higher than the top edge of the water outlet 115 of the separation settling chamber 110 to prevent the overflow of sewage.

In order to fix the driven rotation shaft 175 in the separation settling chamber 110, the above-mentioned hydrodynamic device 170 further includes a rotation shaft fixing member 177 having one end fixed to a sidewall of the upper separation chamber 111 and the other end fixed to the driven rotation shaft 175, for example, by a sleeve or a bearing, etc., so that the driven rotation shaft 175 can rotate with respect to the rotation shaft fixing member 177 while keeping a relative position of the driven rotation shaft 175 and the upper separation chamber 111.

In some embodiments, the filtering apparatus 100 further includes a water outlet pipeline 180, where the water outlet pipeline 180 is communicated with the water outlet 115 of the upper separation chamber 111, and the caliber of the water outlet pipeline 180 is greater than the caliber of the water outlet 115 of the upper separation chamber 111, so that the water outlet of the upper separation chamber 111 enters the biological decomposition apparatus 200 at a certain flow rate, so as to provide enough kinetic energy for sewage flowing in the system, reduce energy consumption of the whole sewage treatment system, and reduce operation cost.

The specific working process comprises the following steps: the sewage discharged from the cultivation device 600 flows through the water inlet pipeline 140 at a certain flow rate, flows into the power chamber 150 from the water inlet pipeline 140, and enters the separation sedimentation chamber 110 through the connecting pipeline 160, and as the caliber of the water inlet of the power chamber 150 is smaller than that of the connecting pipeline 160 and that of the water inlet of the separation sedimentation chamber 110, the sewage flow rate is reduced so as to be convenient for sedimentation and separation, and the sewage containing small particles such as fish manure flows through the water outlet pipeline 180 through the grid and flows out into the biological decomposition device 200; the grid prevents large particles such as fish manure from floating upwards, the large particles such as fish manure gradually subside to the bottom of the conical tank under the difference of gravity and buoyancy, and the large particles are discharged into the fermentation equipment 300 through the sewage outlet 114; because the caliber of the water inlet pipeline 140 is larger than that of the water inlet of the power chamber 150, the sewage flow speed is accelerated, the sewage pushes the turbine 171 to rotate, and then drives the turbine shaft 172 and the driving wheel 173 to rotate, and the driving wheel 173 drives the wheel connecting piece 176 to rotate, and further drives the driven wheel 174, the driven rotating shaft 175 and the stirring device 130 to rotate, so that the sewage pipe orifice is kept smooth and is not blocked by large particles such as fish manure. The sewage containing small particles such as fish manure flows through the water outlet pipeline 180 through the grid and flows out to the biological decomposition equipment 200 for further water treatment operation; large particles such as fish manure are discharged from a sewage pipe orifice to the fermentation equipment 300 for fermentation treatment.

Example two

10-11, FIG. 10 is a schematic structural diagram of a fermentation apparatus according to an embodiment of the present application; fig. 11 is a schematic cross-sectional structure of fig. 10.

The fermentation apparatus 300 provided herein includes: a fermentation tank 310, a liquid inlet device 330, a liquid outlet device 340, a sewage discharging device 350 and a control device; the fermenting case 310 is preferably a cuboid structure, which has a hollow inner cavity, the inner cavity is provided with a filtering device 320, the filtering device 320 is preferably a conical funnel-shaped filter screen, and in other embodiments, the fermenting case can also be provided with a round table-shaped filter screen, and the specific structure of the filter screen can be set according to requirements; the peripheral edge of the filter screen is fixed with the top edge of the fermentation tank 310, the filtering device 320 divides the fermentation tank 310 into two parts from top to bottom, a filter cavity formed by the filter screen, and a liquid storage cavity formed by the outer wall of the filter screen and the inner wall of the fermentation tank 310. The liquid inlet device 330 includes a liquid inlet pipe 331, the liquid inlet pipe 331 is located at the top of the fermentation tank 310 and is opposite to the filtering device 320, so that the sewage entering the fermentation tank 310 is filtered by the filtering device 320, and the filtered sewage flows down into the bottom of the fermentation tank 310, i.e. the liquid storage cavity.

In order to further improve the fermentation effect of the filter residue on the filtering device 320, the method further comprises:

the inner circulation device 360, one end of the inner circulation device 360 is communicated with the liquid storage cavity of the fermentation tank 310, and the other end is communicated with the filter cavity of the filter device 320, and is used for lifting the liquid filtered in the fermentation tank 310 into the filter cavity of the filter device 320 for inner circulation; from this with prevent that filter residue humidity in the filter chamber is insufficient, or because of long-time dehydration adhesion on filter equipment 320, can also make through the fermentation bacterial agent evenly distributed of manual work or the extra interpolation of machine on excrement and urine residue, play the sewage stirring effect, promote the sewage of fermentation tank 310 bottom and carry to filter equipment 320's filter chamber through internal circulation device 360, in order to guarantee that the humidity of filter chamber satisfies the fermentation condition, prevent simultaneously that the filter residue from gluing on the filter screen, filter residue and sewage fully contact and make fermentation bacterial agent and filter residue evenly mixed, further improve fermentation effect.

Specifically, the control method of the fermentation equipment comprises the following steps:

judging whether the liquid level of a filter cavity of the filter device reaches a first preset liquid level or not;

if so, the liquid inlet pipeline is disconnected, the internal circulation device is started, and the sewage in the fermentation tank is lifted into the filter cavity of the filter device for internal circulation operation.

The monitoring of the first preset liquid level can be realized by arranging a liquid level sensor or a liquid level meter and the like, and the circulation of sewage in the fermentation tank is realized by starting the internal circulation device, so that the filter residues in the filter cavity are better supplemented with water, the humidity requirement required by fermentation is met, and the fermentation effect is improved; meanwhile, the problems of overlong residence time of filter residues in the filter device, adhesion and the like are prevented; the fermentation bacteria agent can be added into the fermentation box or the filter cavity, and the fermentation bacteria agent is uniformly dispersed through internal circulation to promote fermentation.

In one embodiment, the liquid inlet device 330 further comprises:

the liquid inlet control valve 332 is located on the liquid inlet pipeline 331 and is used for controlling the on-off of the liquid inlet pipeline 331;

the first liquid level detecting component 333 is located in the filter cavity of the filter device 320 and is used for detecting the liquid level of the filter cavity of the filter device 320.

The liquid inlet pipeline 331 is located outside the fermentation tank 310, the liquid inlet control valve 332 is preferably an electromagnetic valve, the first liquid level detection component 333 is a liquid level sensor, and the liquid level sensor is preferably fixed at a first preset liquid level of the filtering device 320 and is detachably and fixedly connected with the first liquid level sensor so as to be convenient to disassemble and assemble; in other embodiments, when the fermentation apparatus 300 has two sets, when the filter chamber level of one set of filter devices 320 is higher than the first preset level, the flow of wastewater into the filter chamber of the other set of filter devices 320 is reversed by the inlet control valve 332. Specifically, the liquid inlet pipeline 331 includes a main liquid inlet pipe and a branch liquid inlet pipe, which are T-shaped, and the two branch liquid inlet pipes are connected to the fermentation tank 310 respectively, and the liquid inlet control valve 332 is disposed at the intersection of the T-shaped structure, so as to realize sewage reversing.

In another embodiment, a heating device 380 is disposed in the inner cavity of the fermentation tank 310, for temperature adjustment of the inner cavity of the fermentation tank 310, the heating device 380 may be disposed near the bottom of the filtering device 320, so as to better adjust the temperature of the filter residue, and the heating device 380 may be disposed as a heating element such as a resistance wire, and may be disposed in a specific structure according to needs, which is not described herein.

The method further comprises the steps of:

when the liquid level of the filter cavity of the filter device reaches a first preset liquid level, the heating device is controlled to be started, and the temperature of the fermentation box is regulated to a preset fermentation temperature.

It can be appreciated that for large particles such as fish manure, which remain in the filter chamber of the filter device 320 for fermentation, the fermentation can be directly performed under natural conditions when the ambient temperature is suitable, such as 25-40 ℃; when the ambient temperature does not meet the fermentation requirement, the fermentation tank 310 can be warmed up by setting the heating device 380 so as to meet the fermentation temperature, and the preset fermentation temperature is set to 25-40 ℃.

Meanwhile, the drain pipeline 345 of the drain device 340 is connected with the bottom of the fermentation tank 310, and is used for draining the clear sewage in the liquid storage cavity into the biological decomposition equipment 200, and the ecological planting bed can be directly supplied for use after being treated by the biological decomposition equipment 200 as the fish manure and other particles contained in the sewage are less and do not need to be additionally fermented.

Before judging whether the liquid level of the filter cavity of the filter device reaches the first preset liquid level, the method further comprises the following steps:

judging whether the liquid level of the inner cavity of the fermentation tank reaches a second preset liquid level, and if so, controlling the opening of the liquid discharge pipeline.

In another embodiment, the method further comprises:

judging whether the liquid level of the inner cavity of the fermentation tank reaches a third preset liquid level, if so, controlling the liquid discharge pipeline to be closed; wherein the third preset liquid level is lower than the second preset liquid level.

Specifically, drain 340 further includes a drain pumping assembly 341 and a drain control valve 342; wherein, the drainage pumping assembly 341 is located in the fermentation tank 310, and the drainage pumping assembly 341 is connected with the drainage pipeline 345 and is used for pumping the sewage filtered by the filtering device 320;

the drain control valve 342 is located on the drain pipeline 345 and controls the on-off of the drain pipeline 345.

The drainage pumping assembly 341 is located on the bottom wall of the fermentation tank 310, a part of the drainage pipeline 345 is disposed in the fermentation tank 310, a part of the drainage pipeline 345 is disposed outside the fermentation tank 310, and the drainage pumping assembly 341 pumps out the sewage in the fermentation tank 310 after being filtered by the filtering device 320 and conveys the sewage to the next-stage treatment unit.

Specifically, the liquid draining device 340 further includes a second liquid level detecting component 343, located at a second preset liquid level position at the bottom of the fermentation tank 310, for detecting a liquid level of the sewage filtered by the filtering device 320 in the fermentation tank 310, and when the liquid level of the fermentation tank 310 is higher than the second preset liquid level, controlling the liquid draining control valve 342 to act, and opening the liquid draining pipeline 345.

When the sewage level in the fermentation tank 310 after being filtered by the filtering device 320 is higher than the second preset level, the drain pipeline 345 is opened to drain, and after the drain is performed for a preset time, the drain control valve 342 is closed, so that a certain amount of sewage is left in the fermentation tank 310 to realize the internal circulation operation process. Or, a third liquid level detection component is arranged at a third preset liquid level to detect whether the liquid level of the inner cavity of the fermentation tank 310 reaches the third preset liquid level, if so, the liquid draining control valve 342 is controlled to act, and the liquid draining pipeline 345 is closed; it will be appreciated that the third predetermined level is below the second predetermined level setting, i.e. the third level detection assembly is below the second level detection assembly 343.

In a specific embodiment, the internal circulation device 360 includes an internal circulation pipeline 361 and an internal circulation pumping assembly, one end of the internal circulation pumping assembly is communicated with the fermentation tank 310, and the other end of the internal circulation pumping assembly is communicated with the filter cavity of the filter device 320, so as to realize the process of conveying the liquid filtered in the fermentation tank 310 into the filter cavity of the filter device 320 for internal circulation operation; in order to simplify the structure of the device, the drain pumping assembly 341 may be reused as an internal circulation pumping assembly, specifically, one end of the internal circulation pipeline 361 is connected to the drain pipeline 345 through the drain control valve 342; the liquid at the bottom of the fermentation tank 310 enters the filtering device 320 through the liquid discharging pumping component 341, part of the liquid discharging pipeline 345 and the internal circulating pipeline 361 to perform internal circulation by controlling the liquid discharging control valve 342 to change direction and open the internal circulating pipeline 361, so that the structure of the device is simplified, a pump body is arranged to realize liquid discharging and internal circulation operation, and the operation cost is reduced. It can be appreciated that the internal circulation line 361 is provided outside the fermenting tank 310 to simplify the internal structure of the fermenting tank 310, and simultaneously prevent liquid splash or attachment of microorganisms and the like on the line from corroding the line, thereby improving the service life of the device.

In another embodiment, the bottom of the filtering device 320 is connected with a sewage draining device 350, and after fermentation is completed, sewage and filter residues in the fermented filtering device 320 are discharged through the sewage draining device 350 and enter a next-stage treatment unit for treatment.

Specifically, when fermentation is completed, the residue liquid in the filtering device 320 is washed by clean water, the cleaner liquid rich in fermentation nutrient substances flows into the inner cavity (liquid storage cavity) of the fermentation box, and when the liquid level in the liquid storage cavity reaches a second preset liquid level, the cleaner liquid is discharged into the water inlet pipe 271 of the biological decomposition device 200 by the liquid discharging device 340, and the sewage is further treated by earthworms and other organisms; the washed slag liquid is discharged into a lower unit by the sewage discharging device 350.

The method for lifting the sewage in the fermentation tank to the filter cavity of the filter device for internal circulation operation comprises the following steps of:

judging whether the internal circulation operation is finished, if yes, controlling the sewage discharging device to be opened, and discharging the sewage and filter residues of the fermented filtering device;

judging whether the internal circulation operation is completed, and if yes, controlling the heating device to be closed.

Specifically, the internal circulation operation specifically comprises executing the preset times to lift the sewage in the fermentation tank into the filter cavity of the filter device; at this time, whether the internal circulation operation is completed or not is judged, namely whether the sewage in the fermentation tank is lifted into the filter cavity of the filter device for a preset number of times is judged, and if so, the internal circulation operation is considered to be completed.

Or, the internal circulation operation specifically comprises the steps of repeatedly executing the lifting of the sewage in the fermentation tank to the filter cavity of the filter device at intervals of preset time in the preset internal circulation time, and judging whether the internal circulation operation is completed or not, namely judging whether the preset internal circulation time is executed or not, if so, considering that the internal circulation operation is completed.

When the internal circulation operation is completed, the sewage discharging device is controlled to be opened, and the heating device is controlled to be closed.

Optionally, the drain 350 includes a drain line 351 and a drain pumping assembly 352, one end of the drain line 351 being connected to the bottom of the filter 320; the sewage pumping assembly 352 is positioned on the sewage pipeline 351 and pumps the fermented filter residue and sewage to the next stage of treatment unit. The sewage pipeline 351 is of an L-shaped structure at one side of the sewage pumping assembly 352, the vertical part of the L-shaped structure is connected with the bottom interface of the filtering device 320, and the horizontal part of the L-shaped structure is connected with the sewage pumping assembly 352; meanwhile, a support column is arranged at the bottom of the vertical part of the L-shaped structure, so that the sewage pipes 351 are supported in the fermentation tank 310.

Further, when the internal circulation operation is completed, nutrients generated by fermentation are required to be obtained and fermented filter residues and sewage are discharged, and in order to facilitate the filter residues to be better separated from the filter screen, the apparatus further comprises an external circulation device 370 comprising an external circulation pipeline 371 and a plurality of external circulation water sprayers 372; the external circulation pipeline 371 is positioned in the inner cavity of the fermentation tank 310 and is arranged along the circumferential external wall of the filtering device 320 in a surrounding manner; a plurality of external circulation sprayers 372 are positioned on the external circulation pipeline 371 and are arranged towards the outer wall of the filtering device 320; the outer circulation water sprayer 372 is a rotary spray head, can swing up and down, sprays clear water towards the outer wall of the filter screen and around, washes fermentation filter residues with clear water to carry nutrients into the liquid storage cavity, promotes fermented particles to flow to the bottom of the filter screen for being conveniently discharged, prevents the filter screen from being blocked, and opens the liquid discharge pipeline 345 to discharge liquid when the sewage liquid level in the liquid storage cavity is higher than or equal to a second preset liquid level.

In one embodiment, the method further comprises:

judging whether the sewage disposal device is started, if so, controlling the external circulation device to start, and spraying clear water to the circumferential external wall of the filtering device to assist the filtering device 320 in sewage disposal.

In another embodiment, the method further comprises:

judging whether the internal circulation operation is finished, if yes, starting the external circulation device, operating for a preset time period, spraying clear water to the circumferential external wall of the filtering device 320, flushing nutrient substances in the fermented filter residues, and controlling the sewage discharging device 350 to be opened after flushing for the preset time period to discharge the sewage and the filter residues of the fermented filtering device.

Specifically, the external circulation pipeline 371 is preferably in a rectangular structure, support rods are respectively arranged at four vertexes of the rectangle, and the bottom ends of the support rods are fixed with the bottom wall of the fermentation tank 310 so as to realize the fixation of the external circulation pipeline 371; the heating device 380 may be disposed between two support rods, and the external circulation line 371 and the heating device 380 may be fixed by the support rods, respectively, to simplify the device structure.

In a specific embodiment, the fermentation apparatus 300 includes a liquid inlet device 330, a liquid outlet device 340, a sewage draining device 350, an inner circulation device 360, an outer circulation device 370 and a control device, wherein the control device is respectively connected with the inner circulation device 360, the outer circulation device 370, the liquid inlet device 330, the liquid outlet device 340 and the sewage draining device 350, the liquid inlet device 330 is positioned above the fermentation apparatus 300 and controls the sewage amount entering the fermentation apparatus 300, the clear liquid is discharged from the liquid outlet device 340 into the biological decomposition apparatus 200, and the particles are discharged from the sewage draining device 350 for reprocessing; the control device is used for executing the operation method.

The liquid inlet device 330 comprises a liquid inlet pipeline 331, a liquid inlet control valve 332 and a first liquid level detection component 333, one end of the liquid inlet pipeline 331 is connected with the sewage outlet 114 of the filtering device 100, the other end of the liquid inlet pipeline 331 is connected with two fermenting tanks 310 which are arranged in parallel, liquid inlet of the two fermenting tanks 310 is realized through the liquid inlet control valve 332, when the liquid level of the culture sewage reaches the first preset liquid level of the filter screen, the liquid inlet pipeline 331 at the current side is closed by the control device, the flow of the culture sewage is stopped, the liquid inlet pipeline 331 at the other side is opened, and the culture sewage flows into the other fermenting tank 310.

The fermentation tank 310 comprises a tank body and a tank cover, wherein the tank cover is provided with a vent hole, a filter screen is arranged inside the fermentation tank 310 and is in a conical funnel shape, the bottom of the filter screen is provided with a sewage pipe orifice, the outlet end of the sewage pipe orifice is connected with a sewage pipe 351 of the sewage apparatus 350, and the bottom of the sewage pipe 351 is provided with a supporting column. The outer circulation water sprayer 372 is arranged in the circumferential direction of the filter screen and is arranged in a surrounding manner, the four vertexes of the outer circulation pipeline 371 are respectively provided with supporting rods, one end of the outer circulation pipeline 371 is connected with the outer circulation water sprayer 372, a spray head is arranged on the outer circulation water sprayer 372, the spray head can swing up and down to spray water to the conical filter screen, the heating device 380 is arranged between the two supporting rods, and the fermentation temperature is controlled by heating clear sewage at the bottom of the fermentation tank 310 and through internal circulation; the aquaculture sewage flows into the filter screen in the fermentation tank 310 through the liquid inlet pipeline 331, the cleaner sewage falls into the bottom of the fermentation tank 310 through the filter screen, the viscous liquid containing the fish manure and other particles is collected in the filter screen until the liquid level reaches the liquid level sensing end of the first liquid level detection component 333, and a signal is transmitted to the control device to control the aquaculture sewage to be switched and discharged into the other fermentation equipment 300.

The liquid draining device 340 comprises a liquid draining pipeline 345, a liquid draining pumping assembly 341, a liquid draining control valve 342 and a second liquid level detecting assembly 343, the water pump is arranged at the bottom of the fermentation tank 310, the liquid draining pipeline 345 is connected with a lower-stage processing unit, and the liquid level sensing end of the second liquid level detecting assembly 343 is arranged at a second preset liquid level position at the bottom of the fermentation tank 310. When the cleaner sewage leaked from the filter screen is gathered at the bottom of the fermentation tank 310 and reaches the second preset liquid level of the fermentation tank 310, the liquid level sensing end of the second liquid level detection assembly 343 senses the liquid level and transmits a signal to the control device to control the liquid discharge control valve 342 to be opened, and the clear liquid flows into the biological decomposition equipment 200 through the liquid discharge pipeline 345; when the level of the relatively clean wastewater is below the third preset level of the fermenter 310, the drain control valve 342 closes and the drain stops.

The sewage system comprises a sewage pumping assembly 352 and a sewage pipeline 351, the sewage pipeline 351 is connected with the bottom of the filtering device 320, after fermentation is completed, the sewage pumping assembly 352 is started, and particle suspension in the filter screen flows into the sewage pipeline 351 through a sewage pipe orifice and is discharged through the sewage pumping assembly 352 and the sewage pipeline 351.

The specific working process is as follows: the culture sewage containing large particles such as fish manure residual baits enters the liquid inlet pipeline 331 through the sewage outlet 114 of the filtering device 100, and flows into the filtering device 320, the particles such as the manure residual baits are intercepted by the filter screen, cleaner sewage leaks into the bottom of the fermentation tank 310, when the cleaner sewage reaches a second preset liquid level of the fermentation tank 310, the second liquid level detection component 343 sends a signal to the control device, the control device controls the liquid discharge control valve 342 to act, and the liquid discharge pipeline 345 is opened to discharge the cleaner sewage into the biological decomposition device 200; when the liquid level in the fermentation tank 310 is lower than the third preset liquid level, the liquid drain control valve 342 of the liquid drain pipeline 345 is controlled to be closed, and liquid drain is stopped; meanwhile, when the liquid level of the filter screen is higher than the first preset liquid level, the liquid inlet control valve 332 is closed, the liquid inlet pipeline 331 is closed to stop flowing in the culture sewage, and the culture sewage enters the fermentation equipment 300 on the other side through the liquid inlet control valve 332; when the liquid level of the filter screen is higher than the first preset liquid level, the heating device 380 and the internal circulation device 360 are controlled to be started, and proper fermentation temperature and ventilation conditions, such as adding a fermentation microbial inoculum, are adjusted so as to promote rapid fermentation of fish manure residual baits and other substances. Sewage in the fermentation tank 310 enters the filtering device 320 through the liquid discharge pumping assembly 341, the partial liquid discharge pipeline 345 and the internal circulation pipeline 361 for internal circulation, and is sprayed on the fish manure residual baits on the filter screen through the rotary spray head, the cleaner sewage is opened in a circulation mode between the fermentation tank 310 and the filter screen, the air vent is used for keeping air to be introduced into the fermentation tank 310, and the rotary spray head sprays cleaner liquid to increase the fermentation oxygen condition. After fermentation is completed, the external circulation device 370 is started, the external circulation water sprayer 372 sprays clear water towards the filter screen at the outer side of the filter screen, cleaner sewage rich in nutritional ingredients flows into the liquid storage cavity at the bottom of the fermentation tank 310 through the filter device 320, after the external circulation device 370 is washed for a preset period of time, the sewage pumping assembly 352 is started, particles after fermentation are promoted to flow to the bottom of the filter screen and are convenient to discharge, and particle suspension in the filter screen flows into the sewage pipeline 351 through the sewage pipe orifice and is discharged through the sewage pumping assembly 352 and the sewage pipeline 351.

Example III

Fig. 12 is a schematic cross-sectional view of a bio-decomposition device according to an embodiment of the present application, as shown in fig. 12 to 15; FIG. 13 is a schematic view of the appearance structure of FIG. 12; FIG. 14 is a schematic view of the siphon assembly of the bio-decomposition apparatus according to the embodiment of the present application; fig. 15 is a schematic view of the explosive structure of fig. 14.

In a specific embodiment, in the biological decomposition apparatus 200 provided in the present application, the pollution discharging layer 230 extends along the longitudinal direction of the decomposition tank 210 and is disposed obliquely, and the pollution discharging layer 230 forms a preset inclination angle with the horizontal plane, for example, 15 ° -45 °; the sewage outlet 231 is positioned on the inner wall of the decomposition tank 210 corresponding to the longitudinal bottom end of the sewage draining layer 230 and penetrates through the decomposition tank 210 along the wall thickness direction, so that sewage is discharged out of the device through the inclined sewage draining layer 230, small particles are prevented from flowing into the plant planting device to block, and the frequency of cleaning the substrate is reduced. Preferably, the blowdown layer 230 is provided with a plurality of blowdown filter screens 232 at intervals along the longitudinal direction.

For better draining of sewage and small particles, the device further comprises a flushing assembly comprising a flushing pipe 281 and a plurality of water sprayers 282, wherein the flushing pipe 281 is communicated with each water sprayer 282; a flushing pipe 281 is provided on the outer wall of the decomposition tank 210 and extends in the longitudinal direction, and any water sprayer 282 is provided in the blowdown chamber 250 and extends in the transverse direction for flushing the blowdown filter net 232.

The flushing pipe 281 is fixed to the outer wall of the decomposition tank 210 and is provided to extend in the longitudinal direction; each of the water sprayers 282 is positioned within the trapway 250 and extends in a lateral direction, with the water sprayers 282 preferably being positioned above the trapway 250, and specifically being secured to the lower surface of the substrate filter layer 220, flushing the underlying trapway layer 230, and discharging the sewage and small particulates out of the trapway 250 through the turbulent flow created by the water flow.

Further, the water sprayers 282 are arranged in one-to-one correspondence with the blowdown filter screens 232 to prevent particulate matters or impurities from blocking the blowdown filter screens 232, so that sewage can enter the drainage cavity 260 through the blowdown filter screens 232; the water spray 282 is fixed to the bottom wall of the substrate filter layer 220 with the spray direction toward the drain 231 side to further facilitate the flow of particulate matter or impurities out of the drain 231 from the drain layer 230 from top to bottom.

In this embodiment, the apparatus further comprises a water inlet assembly positioned above the decomposition tank 210 in communication with the substrate storage cavity 240; the water inlet assembly includes:

a water inlet pipe 271 and a plurality of water separators 272, the water inlet pipe 271 being located at an outer wall of the decomposition tank 210 and extending in a longitudinal direction; the water separator 272 is located at the inner top wall of the decomposition tank 210 to extend in a lateral direction, and any one of the water separators 272 is connected to the water inlet pipe 271 for discharging sewage into the substrate storage chamber 240.

The water inlet pipe 271 is fixed to the outer wall of the decomposition tank 210 and extends in the longitudinal direction; each water separator 272 is communicated with the water inlet pipe 271, and the water separator 272 is positioned in the substrate storage cavity 240, preferably fixed on the inner top wall of the decomposition tank 210 and extends transversely; the sewage enters the substrate storage chamber 240 through the water inlet pipe 271 and the water separator 272. Preferably, a water inlet control valve is provided on the water inlet pipe 271 to control the on-off of the pipeline.

14-15, in another embodiment, in order to implement the draining of the clean water in the draining cavity 260, the above-mentioned decomposing device includes a siphon assembly 290, where the siphon assembly 290 is located on the bottom wall of the decomposing tank 210, the siphon assembly 290 includes a first sleeve 291 fixed in the draining cavity 260, the top end of the first sleeve 291 is in a closed structure, the bottom end has an opening and a siphon liquid inlet 2911, the draining pipe 292 is sleeved with the first sleeve 291 through the bottom end opening, and the siphon liquid inlet 2911 is communicated with the draining cavity 260;

a drain pipe 292 sleeved in the first sleeve 291, wherein a top water inlet 2921 of the drain pipe 292 is spaced from the top wall of the first sleeve 291; the bottom outlet 2922 of the drain pipe 292 penetrates and is located below the bottom wall of the decomposition tank 210.

The outer diameter of the drain pipe 292 is smaller than the inner diameter of the first sleeve 291, whereby a gap is formed between the outer wall of the drain pipe 292 and the inner wall of the first sleeve 291 for water storage. A space is provided between the top water inlet 2921 of the drain pipe 292 and the top wall of the inner cavity of the first sleeve 291, and the bottom water outlet 2922 of the drain pipe 292 penetrates the bottom wall of the decomposition tank 210 to discharge clean water out of the biological decomposition tank 210. The drain 292 is provided in an L-shape so as to achieve vacuum maintenance. Meanwhile, the siphon component 290 can ensure the water level of the drainage cavity 260 and the whole biological decomposition device 200, so that the matrix storage cavity 240 above is in a semi-dry and semi-wet environment, and the existence of earthworms is facilitated.

The siphon assembly 290 further comprises a second sleeve 293 sleeved outside the first sleeve 291, wherein the inner diameter of the second sleeve 293 is larger than the outer diameter of the first sleeve 291; the second sleeve 293 is provided with a filtering mesh having a predetermined distance from bottom to top to filter the sewage introduced into the first sleeve 291.

Specifically, the bottom wall of the first sleeve 291 is provided with a plurality of supporting frames 294, each supporting frame 294 is disposed at intervals along the circumferential direction of the bottom wall of the first sleeve 291, and a siphon liquid inlet 2911 is formed between the adjacent supporting frame 294 and the bottom wall of the first sleeve 291.

The sewage in the drainage cavity 260 enters the outer wall of the drainage pipe 292 through the siphon liquid inlet 2911 and forms a gap with the inner wall of the first sleeve 291, when the water level reaches the top water inlet 2921 of the drainage pipe 292, negative pressure is formed to attract the sewage to continuously and rapidly flow out of the drainage cavity 260 through the top water inlet 2921 of the drainage pipe 292 until the liquid level of the drainage cavity 260 is reduced to the upper surface of the siphon liquid inlet 2911, the negative pressure effect disappears, and the siphon effect stops, so that the liquid in the drainage cavity 260 is rapidly discharged, no additional power is needed, and the drainage device is economical and environment-friendly.

The specific working process is as follows: the water outlet of the filtering device discharges the culture sewage containing the particles such as the fish manure, the culture sewage flows into the matrix above the matrix filtering layer 220 through the water separator 272 from the water inlet pipe 271, the particles such as the fish manure are intercepted and filtered by the matrix, the earthworms biologically decompose the particles such as the fish manure on the matrix layer, the decomposed nutrient elements, the small particles and the cleaner liquid of the culture sewage leak into the sewage discharging layer 230 together through the matrix gap and the matrix filtering layer 220, the clean water is flushed by the flushing pipe 281 through the water sprayer 282 at a certain pressure flow rate, the clean water leaks down from the filter screen and flows into the water discharging cavity 260, and the sewage with the small particles is discharged through the sewage discharging outlet 231. The cleaner liquid accumulates in the drainage cavity 260, the water flow between the holes of the second sleeve 293 and the first sleeve 291 can rise from the drainage cavity 260 along the gap between the second sleeve 293 and the first sleeve 291, when the water level in the drainage cavity 260 reaches the water inlet 2921 at the top of the drainage pipe 292, negative pressure is finally formed to attract sewage to continuously and rapidly flow out of the drainage cavity 260 from the water inlet 2921 at the top of the drainage pipe 292 until the liquid level of the drainage cavity 260 reaches the upper end positions of the three supporting frames 294, the negative pressure effect disappears, and the siphon effect stops, so that the liquid in the drainage cavity 260 is rapidly discharged to the ecological planting bed 400 for subsequent plant absorption and utilization.

The device entraps and separates the sewage containing the particles such as fish manure through the substrate filter layer 220, and rapidly discharges the liquid in the water discharge cavity 260 through the siphon component 290; the particles such as the fish manure are decomposed by earthworms, part of nutrient element substances are fused into water, ammonia nitrogen and other element substances in the culture sewage are also in the water, the particles such as the earthworm manure flow into the drainage cavity 260 through the drainage filter screen 232, and the particles such as the earthworm manure are discharged out of the fish-vegetable symbiotic system through the drainage layer 230 with gradient, so that fine particles are prevented from flowing into the plant planting system to block the matrix, the frequency of cleaning the matrix is greatly reduced, and the microbial reproduction and metabolism are facilitated; when the water level in the drainage chamber 260 reaches a desired level, the siphon assembly 290 drains the fresh water containing the nutrient elements into the plant growing system by means of a siphon to provide water and nutrients to the plants.

Example IV

Fig. 16-21 show a schematic structural view of an ecological planting bed according to an embodiment of the present application; FIG. 17 is a schematic view of an ecological planting bed according to another embodiment of the present disclosure; FIG. 18 is a schematic cross-sectional view of FIG. 16; FIG. 19 is a schematic cross-sectional view of FIG. 17; FIG. 20 is a schematic view of a water outlet assembly according to an embodiment of the present disclosure; fig. 21 is a schematic view of the explosive structure of fig. 20.

In a specific embodiment, in the ecological planting bed 400 provided in the present application, in order to further facilitate the water flow, the bottom wall of the planting bed body 410 is arranged along the longitudinal inclination, the water inlet component 420 is located at the high position of the bottom wall of the planting bed body 410, and the water outlet component 430 is located at the low position of the bottom wall of the planting bed body 410. That is, the bottom of the planting bed body 410 is provided with an inclination angle with the horizontal plane, so that the water body can flow from high to low along the longitudinal direction, the flow rate of the water body is improved, the planting bed body 410 can drain water rapidly, the microorganisms can obtain sufficient oxygen, the propagation metabolism is promoted, and the water quality is purified.

In a preferred embodiment, the blind pipe 440 is a plastic blind ditch, which is a composite geotechnical drainage body (GDS), also called a three-dimensional drainage plate, and is a three-dimensional porous material formed by heating and melting thermoplastic synthetic resin, extruding fiber filaments through a nozzle, stacking the fiber filaments, and welding the junctions of the fiber filaments. The cross section of the blind pipe 440 may be circular or rectangular in configuration. It will be appreciated that the blind pipe 440 is capable of smooth flow and compression resistance while the plastic blind drain has extremely high surface water penetration and internal water penetration capabilities, as well as excellent pressure resistance and deformation adaptation.

As shown in fig. 20 to 21, in the above embodiments, the water outlet assembly 430 has a siphon structure, and the water outlet assembly 430 includes:

the first sleeve 431 is fixed on the bottom wall of the implant bed body 410, the top end of the first sleeve 431 is of a closed structure, the bottom end of the first sleeve 431 is provided with a siphon liquid inlet 4311, and the siphon liquid inlet 4311 is communicated with the inner cavity of the implant bed body 410;

the drain pipe 432 is sleeved in the first sleeve 431, and a top water inlet 4321 of the drain pipe 432 is spaced from the top wall of the first sleeve 431; the bottom water outlet 4322 of the water drain pipe 432 is provided through the bottom wall of the implant bed 410.

The outer diameter of the drain pipe 432 is smaller than the inner diameter of the first sleeve 431, whereby a gap is formed between the outer wall of the drain pipe 432 and the inner wall of the first sleeve 431 for water storage. A space is arranged between the top water inlet 4321 of the drain pipe 432 and the top wall of the inner cavity of the first sleeve 431, and the bottom water outlet 4322 of the drain pipe 432 penetrates through the bottom wall of the planting bed body 410 to discharge clean water out of the planting bed body 410. The drain pipe 432 is provided in an L shape so as to achieve vacuum maintenance.

The water outlet assembly 430 further includes a second sleeve 433 sleeved outside the first sleeve 431, and an inner diameter of the second sleeve 433 is larger than an outer diameter of the first sleeve 431; the second sleeve 433 is provided with a filtering mesh with a predetermined distance from bottom to top to filter the water body entering the first sleeve 431. Preferably, the circumferential side wall of the second sleeve 433 is fully covered with filter mesh.

Specifically, the bottom wall of the first sleeve 431 is provided with a plurality of supporting frames 434, each supporting frame 434 is disposed along the circumferential direction of the bottom wall of the first sleeve 431 at intervals, and a siphon liquid inlet 4311 is formed between the adjacent supporting frame 434 and the bottom wall of the first sleeve 431.

When the water level reaches the top water inlet 4321 of the drain pipe 432, negative pressure is formed to attract water to continuously and rapidly flow out of the inner cavity of the planting bed body 410 from the top water inlet 4321 of the drain pipe 432 until the liquid level of the planting bed body 410 is reduced to the upper surface of the liquid inlet 4311, the negative pressure effect disappears, and the siphon effect stops, so that the rapid liquid discharge of the planting bed body 410 is realized, no additional power is needed, and the planting bed is economical and environment-friendly.

It can be understood that the fish and vegetable symbiotic system can comprise a plurality of ecological planting beds 400, each ecological planting bed 400 is respectively connected with the biological decomposition equipment 200, and an electromagnetic valve is arranged at the water inlet component 420 of each ecological planting bed 400 to control the water inflow of the ecological planting bed 400; when the ecological planting bed 400 reaches the preset water inflow, the electromagnetic valve is controlled to be closed, and water inflow to the current ecological planting bed is stopped; and controls the solenoid valve of the next ecological planting bed 400 to be opened, and controls the pipeline to feed water to the next ecological planting bed. Optionally, the fish and vegetable symbiotic system comprises two ecological planting beds 400, the two ecological planting beds 400 are respectively connected with the biological decomposition equipment 200, when the water inflow of the first ecological planting bed reaches the preset water inflow, the electromagnetic valve of the water inlet component 420 of the first ecological planting bed is controlled to be closed, the electromagnetic valve of the water inlet component 420 of the second ecological planting bed is controlled to be opened, water is fed into the second ecological planting bed, when the water inflow of the second ecological planting bed reaches the preset water inflow, the electromagnetic valve of the water inlet component 420 of the second ecological planting bed is controlled to be closed, water is fed into the first ecological planting bed again, and the operation process is repeated; when the first ecological planting bed stops water inflow and the second ecological planting bed stops water inflow, the water draining component 420 of the first ecological planting bed drains water, so that microorganisms such as nitrifying bacteria can obtain sufficient oxygen, and the microorganisms can propagate, metabolize and purify water; and the work beat can be quickened.

The specific working process is as follows: the culture sewage is pretreated, flows into one longitudinal end of the planting bed body 410 from the water inlet assembly 420, and water flows to the other longitudinal end of the planting bed body 410 through the matrix gap and the blind pipe 440, so that the water level is gradually increased; the water enters the gap cavity between the second sleeve 433 and the first sleeve 431 from the hole of the second sleeve 433, flows into the gap cavity between the first sleeve 431 and the drain pipe 432 from the liquid inlets 4311 at the three supporting frames 434 of the bottom first sleeve 431, gradually rises to the top water inlet 4321 of the drain pipe 432 along with the water level, gradually discharges the air between the top water inlet 4321 and the top wall of the inner cavity of the first sleeve 431, forms siphon to lead the water flow to continuously and rapidly flow out, and is discharged out of the implant bed 410 through the drain pipe 432; when the water level is lowered to the upper ends of the three supporting frames 434 of the first sleeve 431, siphoning is stopped, drainage is stopped, and the substrate in the ecological planting bed 400 is fully exposed to the air, so that microorganisms such as nitrifying bacteria can obtain sufficient oxygen, intermittent water collection and drainage are realized, and the microorganism propagation metabolism is facilitated, so that the water quality is purified. Preferably, the planting bed body 410 is provided with a grating plate 460 near the water inlet assembly 420 to form a water pretreatment area 470, which can pretreat the entering water, for example, placing biochemical balls 480 containing microorganisms such as nitrifying bacteria, so as to accelerate the speed of culturing microbial ecosystems such as nitrifying bacteria by the ecological planting bed 400, thereby rapidly purifying water.

The ecological planting bed 400 realizes rapid drainage of the substrate layer 450 by arranging the porous pressure-resistant blind pipe 440 which is beneficial to water passage, is beneficial to obtaining sufficient oxygen by microorganisms, and promotes propagation metabolism and water quality purification; the front end pretreatment system of the ecological planting bed 400 is arranged, and pre-cultured microorganisms are added, so that the ecological planting bed 400 is promoted to form a microorganism ecological system rapidly, and time is saved; and a siphon device is arranged to realize unpowered rapid drainage.

Example five

As shown in fig. 5, the water collecting apparatus 700 includes a water collecting tank 710, a water pumping pipe 730 and a water collecting and pumping device 720, the water collecting and pumping device 720 is located at the bottom of the water collecting tank 710, the water collecting and pumping device 720 is connected with the water pumping pipe 730, the water pumping pipe 730 is connected with the cultivation apparatus 600, and the purified water is pumped to the cultivation apparatus 600. In one embodiment, the water collecting device 700 collects the water body purified by the ecological planting bed 400 and lifts the water body into the cultivation device 600 for recycling, the water body purified by the ecological planting bed 400 flows into the water collecting tank 710 through the drain pipe 432, the water collecting pumping device 720 is arranged at the bottom of the water collecting tank 710, one end of the water pumping pipeline 730 is connected with the water collecting pumping device 720, and the other end of the water pumping pipeline 730 is connected with a liquid inlet pipeline of the cultivation device 600.

Example six

As shown in fig. 4 to 5, the fish dung collection device comprises a collection pipe 630 and a fish bowl 640, the collection pipe 630 is arranged in the vertical direction, water permeable holes are uniformly formed in the circumferential outer wall of the collection pipe 630, sewage rotates from west to east under the rotation of the earth, a vortex is formed in the center, residual fish dung baits and the like are gathered in the center of rotation, enter the collection pipe 630 through the water permeable holes and flow through the fish bowl 640, and flow into the filtering device 100 along the culture drain pipe 620.

In another embodiment, the cultivation device 600 further includes a cultivation liquid return pipeline 650, the cultivation liquid return pipeline 650 extends to the inside along the vertical direction of the cultivation pond 610, and meanwhile, a plurality of liquid draining holes are sequentially formed in the cultivation liquid return pipeline 650 from top to bottom, so as to further drive the water body in the cultivation pond to rotate from west to east, and enable the particles such as fish dung and mixed baits to be concentrated at the central part of the cultivation pond 610, so that the cultivation pond 610 can be conveniently discharged from the collecting pipe and the fish toilet 640. Preferably, the culture liquid return pipeline 650 can also be obliquely arranged and form a certain inclination angle with the vertical direction, so as to further improve the rotation motion of the driving water body.

In a specific embodiment, the fish and vegetable symbiotic system provided by the application comprises a cultivation device 600, a filtering device 100, a fermentation device 300, a biological decomposition device 200, an ecological planting bed 400 and a water collecting device 700; the cultivation device 600 is used for cultivating aquatic organisms such as fishes and shrimps, the feces of the fishes and shrimps and a small amount of residual feed which is not eaten exist in the cultivation device 600, cultivation sewage rotates in the cultivation pool 610, the feces and the feed are enabled to be gathered to the collecting pipe 630 at the central part along with water flow rotation, and flow into the fish closestool 640 from the water permeable hole, and flow into the filtering device 100 through the cultivation liquid discharge pipeline 620; the water body purified by the fish and vegetable symbiotic system flows into the culture pond 610 through the culture liquid return pipeline 650, the liquid discharge of the culture sewage and the purification treatment liquid return are continuously carried out, and a liquid level sensor can be arranged for feedback according to the preset liquid level of the culture pond 610 so as to control the water source to timely supplement new water to the culture pond 610.

The culture sewage flows into the filtering device 100 from the culture liquid discharge pipeline 620 of the culturing device 600 through the water inlet pipeline 140 of the filtering device, flows into the power chamber 150, and flows into the separation sedimentation chamber 110 through the connecting pipeline 160, as the caliber of the water inlet of the power chamber 150 is smaller than that of the connecting pipeline 160 and that of the water inlet of the separation sedimentation chamber 110, the sewage flow speed is reduced, the sedimentation separation is facilitated, the sewage containing small particles such as fish manure flows out through the water outlet pipeline 180 through the grille, the large particles such as the fish manure are prevented from floating upwards by the grille, and the large particles such as the fish manure gradually subside to the bottom of the conical tank under the difference of gravity and buoyancy and are discharged from the sewage outlet 114; because the caliber of the water inlet pipeline 140 is larger than that of the water inlet of the power chamber 150, the sewage flow speed is accelerated, the sewage pushes the turbine 171 to rotate, and then drives the turbine shaft 172 and the driving wheel 173 to rotate, and the driving wheel 173 drives the wheel connecting piece 176 to rotate, and further drives the driven wheel 174, the driven rotating shaft 175 and the stirring assembly 130 to rotate, so that the sewage outlet 114 is kept smooth and is not blocked by large particles such as fish manure. The cleaner sewage containing small particles such as fish manure flows out through the water outlet pipeline 180 through the grid, enters the biological decomposition equipment 200 for biological decomposition, and the sewage containing large particles such as fish manure is discharged from the sewage outlet 114 and enters the fermentation equipment 300 for fermentation treatment. The treatment process of the cultivation sewage from the cultivation device 600 to the filtering device 100 is green and energy-saving without additional energy consumption.

The cleaner sewage containing small particles such as fish manure flows into the biological decomposition device 200 through the water inlet pipe 271 from the water outlet pipeline 180 of the filtering device 100, and the specific working process is as follows: the cleaner sewage containing small particles such as fish manure flows into the matrix above the matrix filter layer 220 through the water separator 272 via the water inlet pipe 271, the small particles such as fish manure are intercepted and filtered by the matrix, earthworms biologically decompose the particles such as fish manure on the matrix layer, cleaner liquid containing nutrient elements and the small particles leak into the sewage discharge layer 230 together with the matrix filter layer 220 through matrix gaps, clean water is flushed by the flushing pipe 281 through the water sprayer 282 at a certain pressure and flow rate, the clean water leaks into the water discharge cavity 260 through the filter screen, and the water with the small particles is discharged through the sewage discharge outlet 231. The biologically decomposed cleaner liquid is accumulated in the drainage cavity 260, the water flow between the holes of the second sleeve 293 and the first sleeve 291 can rise from the drainage cavity 260 along the gap between the second sleeve 293 and the first sleeve 291, when the water level in the drainage cavity 260 of the drainage layer reaches the water inlet 2921 at the top of the drainage pipe 292, negative pressure suction water is finally formed to continuously and rapidly flow out of the drainage cavity 260 from the water inlet 2921 at the top of the drainage pipe 292 until the liquid level of the drainage cavity 260 reaches the upper end positions of the three supporting frames 294, the negative pressure effect disappears, and the siphon effect stops, so that the liquid in the drainage cavity 260 is rapidly discharged to the ecological planting bed 400, and plants in the ecological planting bed can be absorbed and utilized conveniently. The cleaner sewage containing small particles such as fish manure is purified from the filtering device 100 to the biological decomposition device 200 without additional energy consumption, thereby being green and energy-saving.

The sewage containing large particles such as fish manure is discharged from the sewage outlet 114 and then enters the fermentation equipment 300, the sewage containing large particles such as fish manure flows into the fermentation equipment 300 from the sewage outlet 114 through the main liquid inlet pipe 331 and flows into the filtering device 320, the particles such as the residual manure are intercepted by the filter screen, cleaner sewage leaks into the bottom of the fermentation tank 310, when the cleaner sewage reaches a second preset liquid level of the fermentation tank 310, the second liquid level detection component 343 sends a signal to the control device, the control device controls the action of the liquid discharge control valve 342, the liquid discharge pipeline 345 is opened, and cleaner sewage is discharged into the biological decomposition equipment 200; when the liquid level in the fermentation tank 310 is lower than the third preset liquid level, the liquid drain control valve 342 of the liquid drain pipeline 345 is controlled to be closed, and liquid drain is stopped; meanwhile, when the liquid level of the filter screen is higher than the first preset liquid level, the liquid inlet control valve 332 is closed, the liquid inlet pipeline 331 is closed to stop flowing in the culture sewage, and the culture sewage enters the fermentation equipment 300 on the other side through the liquid inlet control valve 332; when the liquid level of the filter screen is higher than the first preset liquid level, the heating device 380 and the internal circulation device 360 are controlled to be started, and proper fermentation temperature and ventilation conditions, such as adding a fermentation microbial inoculum, are adjusted so as to promote rapid fermentation of fish manure residual baits and other substances. Sewage in the fermentation tank 310 enters the filtering device 320 through the liquid discharge pumping assembly 341, the partial liquid discharge pipeline 345 and the internal circulation pipeline 361 for internal circulation, and is sprayed on the fish manure residual baits on the filter screen through the rotary spray head, the cleaner sewage is opened in a circulation mode between the fermentation tank 310 and the filter screen, the air vent is used for keeping air to be introduced into the fermentation tank 310, and the rotary spray head sprays cleaner liquid to increase the fermentation oxygen condition. After fermentation is completed, the external circulation device 370 is started, the external circulation water sprayer 372 sprays clear water towards the filter screen at the outer side of the filter screen, the cleaner sewage rich in nutrient components flows into the liquid storage cavity at the bottom of the fermentation tank 310 through the filter device 320, and when the liquid level reaches a second preset liquid level, the liquid discharge pipeline 345 is started to discharge the cleaner sewage into the water inlet pipe 271 of the biological decomposition equipment 200; after the external circulation device 370 is washed for a preset period of time, the sewage pumping assembly 352 is started, fermented particles are promoted to flow to the bottom of the filter screen and are convenient to discharge, and particle suspension in the filter screen flows into the sewage pipeline 351 through the sewage pipe orifice and is discharged through the sewage pumping assembly 352 and the sewage pipeline 351.

The sewage discharged through the biological decomposition apparatus 200 flows into the ecological planting bed 400 through the drain pipe 292 of the biological decomposition apparatus 200, and the water body flows to the other longitudinal end of the planting bed body 410 through the matrix gap and the blind pipe 440, and the water level gradually rises; the water enters the gap cavity between the second sleeve 433 and the first sleeve 431 from the hole of the second sleeve 433, flows into the gap cavity between the first sleeve 431 and the drain pipe 432 from the liquid inlets 4311 at the three supporting frames 434 of the bottom first sleeve 431, gradually rises to the top water inlet 4321 of the drain pipe 432 along with the water level, gradually discharges the air between the top water inlet 4321 and the top wall of the inner cavity of the first sleeve 431, forms siphon to lead the water flow to continuously and rapidly flow out, and is discharged out of the implant bed 410 through the drain pipe 432; when the water level is lowered to the upper ends of the three supporting frames 434 of the first sleeve 431, siphoning is stopped, drainage is stopped, and the substrate in the ecological planting bed 400 is fully exposed to the air, so that microorganisms such as nitrifying bacteria can obtain sufficient oxygen, intermittent water collection and drainage are realized, and the microorganism propagation metabolism is facilitated, so that the water quality is purified. Preferably, the planting bed body 410 is provided with a grating plate 460 near the water inlet assembly 420 to form a water pretreatment area 470, which can pretreat the entering water, for example, placing biochemical balls 480 containing microorganisms such as nitrifying bacteria, so as to accelerate the speed of culturing microbial ecosystems such as nitrifying bacteria by the ecological planting bed 400, thereby rapidly purifying water.

Finally, the water purified by the ecological planting bed 400 flows into the water collecting tank 710 through the drain pipe 432, is lifted by the water collecting pumping device 720 at the bottom of the water collecting tank 710, flows into the cultivation liquid return pipeline 650 through the water pumping pipeline 730, finally flows into the cultivation tank 610 for recycling, and the cultivation water finishes recycling and purifying once.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for treating sewage in a fish and vegetable symbiotic system, the method comprising:

2. The method for treating sewage of a fish and vegetable symbiotic system according to claim 1, wherein the biological decomposition of the primary water body and the secondary water body after fermentation by the biological decomposition device respectively comprises the following steps:

3. A method of treating sewage of a fish and vegetable co-occurrence system according to claim 1, further comprising:

the culture sewage flows into the filtering equipment under the action of gravity, and the filtered primary water body sequentially flows into the biological decomposition equipment and the ecological planting bed under the action of gravity;

the secondary water containing large particles flows into the fermentation equipment under the action of gravity, is pumped into the biological decomposition equipment by the pumping device, and the decomposed water flows into the ecological planting bed under the action of gravity.

4. A method for treating sewage of a fish and vegetable co-production system according to claim 1, wherein the fermentation of the secondary water body containing large particles by a fermentation apparatus specifically comprises:

filtering the secondary water body containing large particles to obtain a tertiary water body containing large particles;

and fermenting the three-stage water body under preset fermentation conditions.

5. A method of treating sewage of a fish and vegetable co-occurrence system according to claim 1, further comprising:

and nitrifying the water body in the ecological planting bed.

6. A fish and vegetable symbiotic system for use in the sewage treatment process of any of claims 1 to 5 comprising:

the aquaculture device is used for aquaculture of aquatic organisms;

7. A fish and vegetable symbiotic system according to claim 6 wherein the fermentation apparatus further comprises:

the inner circulation device is communicated with the fermentation tank at one end and the filter cavity of the filter device at the other end, and is used for conveying the sewage filtered in the fermentation tank into the filter cavity of the filter device for inner circulation;

And the control device is respectively connected with the internal circulation device, the liquid inlet device and the liquid discharge device.

8. A fish and vegetable co-occurrence system according to claim 7, wherein the drain further comprises:

one end of the liquid discharge pipeline is connected with the bottom of the inner cavity of the fermentation box, and the other end of the liquid discharge pipeline is connected with the biological decomposition equipment;

the liquid draining and pumping assembly is positioned in the fermentation tank and connected with the liquid draining pipeline and used for pumping the sewage filtered by the filtering device;

the liquid draining control valve is positioned on the liquid draining pipeline and used for controlling the on-off of the liquid draining pipeline, and the liquid draining pumping assembly and the liquid draining control valve are respectively connected with the control device.

9. A fish and vegetable co-occurrence system according to claim 8, wherein the internal circulation means comprises an internal circulation line, one end of which is connected to the drain line via the drain control valve;

the control device controls the liquid discharge control valve to change direction and open the internal circulation pipeline, and liquid at the bottom of the fermentation tank enters the filtering device through the liquid discharge pumping assembly, part of the liquid discharge pipeline and the internal circulation pipeline to perform internal circulation.

10. A fish and vegetable symbiotic system according to claim 7 wherein the fermentation apparatus further comprises a sewage drain and an external circulation device, respectively, connected to the control means;

the sewage discharging device is connected with the bottom of the filtering device and is used for discharging the sewage and filter residues of the filtering device after fermentation;

the external circulation device comprises an external circulation pipeline and a plurality of external circulation water sprayers; one end of the external circulation pipeline is connected with a water source, and the other end of the external circulation pipeline is positioned in the inner cavity of the fermentation tank and is arranged along the circumferential outer wall of the filtering device in a surrounding manner; the external circulation water sprayer is positioned on the external circulation pipeline and is arranged towards the outer wall of the filtering device.

11. A fish and vegetable symbiotic system according to claim 6 wherein the bio-decomposing device comprises:

the inner cavity of the decomposition box is provided with a matrix filter layer and a sewage draining layer which are sequentially arranged from top to bottom along the vertical direction; the substrate filter layer is used for bearing a substrate and filtering large particles, a substrate storage cavity is formed by the substrate filter layer and the inner wall of the decomposition tank, the substrate storage cavity is connected with the water outlet of the filtering equipment and the liquid draining device, and the substrate storage cavity is used for containing decomposed organisms and carrying out biological decomposition on sewage;

The sewage draining layer is used for filtering small particles, and a sewage draining cavity is formed between the sewage draining layer and the matrix filtering layer and used for discharging sewage with the small particles outwards;

a drainage cavity is formed between the bottom wall of the decomposition tank and the sewage draining layer and is used for collecting and draining the clear water filtered by the sewage draining layer.

12. A fish and vegetable co-occurrence system according to claim 11, wherein the sewage layer extends longitudinally of the decomposition tank and is disposed obliquely;

the sewage draining layer and the matrix filtering layer form a sewage draining cavity therebetween, the sewage draining cavity is provided with a sewage draining outlet for outwards draining sewage with small particles, and the sewage draining outlet is positioned on the inner wall of the decomposition tank corresponding to the longitudinal bottom end of the sewage draining layer and penetrates through the decomposition tank along the wall thickness direction.

13. A fish and vegetable symbiotic system according to claim 12 wherein the blowdown layer is longitudinally spaced with a plurality of blowdown filter screens;

the bio-decomposition apparatus further includes:

the flushing assembly comprises a flushing pipe and a plurality of water sprayers, wherein the flushing pipe is positioned on the outer wall of the decomposition tank and extends longitudinally, and any water sprayer is positioned in the sewage draining cavity and extends transversely and is used for flushing the sewage draining filter screen.

14. A fish and vegetable symbiotic system according to claim 6 wherein the farming plant, the filtering plant, the bio-decomposing plant are all located above ground, the water level of the farming plant being higher than the top walls of the filtering plant and the bio-decomposing plant, respectively;

the fermentation equipment, the ecological planting bed and the water collecting equipment are all positioned below the ground; the ecological planting bed and the top wall of the water collecting device are lower than the ground, and the bottom wall of the water collecting device is lower than the bottom wall of the ecological planting bed.