CN112335602B

CN112335602B - Efficient automatic sewage suction device for pond engineering circulating water

Info

Publication number: CN112335602B
Application number: CN202011207725.XA
Authority: CN
Inventors: 汪翔; 崔凯; 何吉祥; 张静; 吴本丽; 黄龙; 郭忠宝; 叶晓明
Original assignee: Fisheries Research Institute of Anhui AAS
Current assignee: Fisheries Research Institute of Anhui AAS
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2023-05-05
Anticipated expiration: 2040-11-03
Also published as: CN112335602A

Abstract

The invention discloses a high-efficiency automatic sewage suction device for pond engineering circulating water. The sewage suction device comprises a plurality of grids, a sewage suction cover, at least two water outlet pipes, a plurality of rows of ultraviolet fluorescent sensors, a plurality of sewage suction pipes, a sewage suction pump and a controller. The grids are parallel to each other and are arranged at the bottom of the sewage collecting area at equal intervals, and a plurality of water flow grooves are formed with the bottom wall of the sewage collecting area. The dirt absorbing cover is in an inverse U shape, covers the two adjacent grids and encloses a water flow channel with the water flow groove. The two water outlet pipes are arranged in parallel and fixed on the inner walls of the two opposite sides of the sewage suction cover. Each water outlet pipe is provided with a plurality of water outlets at equal intervals. The ultraviolet fluorescence sensors in multiple rows are respectively corresponding to the water flow grooves, and each ultraviolet fluorescence sensor is arranged on the bottom wall of the corresponding water flow groove. The invention can automatically detect and absorb the deposited particles, the operation is more convenient, the content of the particles in the absorbed sewage is higher, the dirt absorbing effect is better, and the dirt absorbing efficiency and the dirt absorbing effect can be improved.

Description

Efficient automatic sewage suction device for pond engineering circulating water

Technical Field

The invention relates to a sewage suction device in the technical field of cultivation, in particular to a high-efficiency automatic sewage suction device for pond engineering circulating water.

Background

The existing sewage suction device is characterized in that a sewage suction pipe is connected in a sewage collecting area through a sewage suction machine to perform uniform motion in the sewage collecting area, and sewage suction is performed during motion. The sewage suction machine and the sewage suction pipe are arranged on the movable platform, the movable platform is connected with the guide line, and the guide line is pulled by the motor to move the movable platform, so that the aim of pulling the sewage suction machine and the sewage suction pipe to uniformly power in the sewage collecting area is fulfilled. Meanwhile, the general sewage collecting area is 4m long, and a 1m high water retaining wall is arranged at the water outlet of the sewage collecting area.

However, the existing sewage suction device has the defect of low sewage suction efficiency, and the reason for the low sewage suction efficiency mainly has 3 aspects: (1) the sedimentation rate of solid phase particles in the dirt collecting zone is low and is only 37.77%; (2) when the dirt suction pipe moves, solid phase particles which are precipitated are easily lifted, so that dirt suction efficiency is reduced; (3) because the solid-phase particles contain fish feces and residual baits, the solid-phase particles have viscosity and are often stuck to the bottom of a dirt collecting area, so the solid-phase particles are not easy to suck away, and the dirt sucking efficiency is reduced again. Wherein, the solid phase particle deposits the back and can carry out autotrophy reaction to in a pile of solid phase particle deposits, the surface of piling up still carries out heterotrophy reaction with the water contact, and piled up inside is kept apart with the water completely, and then changes autotrophy reaction into from heterotrophy reaction and begins the fermentation, thereby has further improved its viscidity, thereby is unfavorable to be absorbed away. In addition, the existing dirt absorbing device needs to be opened manually after 30-60 minutes after feeding activities, needs to be opened for 4-6 times a day, and is complex in operation.

Disclosure of Invention

The invention provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which aims to solve the technical problems of low sewage suction efficiency and complex operation of the conventional sewage suction device.

The invention is realized by adopting the following technical scheme: an efficient automatic sewage suction device for pond engineering circulating water, which is used for sucking sewage in a sewage collecting area in a pond engineering circulating water culture system, and comprises the following components:

the grids are parallel to each other and are arranged at the bottom of the sewage collecting area at equal intervals, and form a plurality of water flow grooves with the bottom wall of the sewage collecting area;

the sewage suction cover is in an inverse U shape, and the width of the sewage suction cover is equal to the distance between two adjacent grids; the sewage suction cover covers the two adjacent grids and encloses a water flow channel with the water flow groove; a plurality of dirt sucking openings are formed in the dirt sucking cover;

at least two water outlet pipes which are arranged in parallel and are fixed on the inner walls of the two opposite sides of the sewage suction cover; each water outlet pipe is provided with a plurality of water outlets at equal intervals, and both ends of each water outlet pipe are closed ends;

the ultraviolet fluorescence sensors are respectively corresponding to the water flow grooves, and each ultraviolet fluorescence sensor is arranged on the bottom wall of the corresponding water flow groove; the ultraviolet fluorescence sensor is used for generating an energy signal according to the sedimentation quantity of solid-phase particles in the corresponding water flow groove;

A plurality of dirt sucking pipes which are respectively corresponding to the plurality of dirt sucking ports; one end of each dirt sucking pipe is connected to the corresponding dirt sucking port;

the other end of each sewage suction pipe is connected to the sewage suction pump; the sewage suction pump is used for sucking solid-phase particles in the water flow channel through a plurality of sewage suction pipes;

the driving mechanism is used for driving the sewage suction pump to move at one side of the same end of the plurality of water flow grooves;

the controller is used for counting the total number of the energy signals with the signal value lower than a set threshold according to the energy signals of each row of ultraviolet fluorescence sensors, and judging whether the total number is larger than a preset number or not; the controller is also used for judging whether the energy signal of each row of ultraviolet fluorescence sensors is reduced; when the total number is greater than the preset number or the energy signals of each row of ultraviolet fluorescence sensors are reduced, the controller drives the sewage suction pump to move to the outer side of the end part of the corresponding water flow groove through the driving mechanism, drives the sewage suction cover to be arranged on the corresponding water flow groove, drives the sewage suction pump to generate negative pressure in the water flow channel, enables water flow outside the water flow channel to enter the water flow channel through a gap space between the sewage suction cover and the grid, and simultaneously ejects water flow into the water flow channel through the water outlet pipe to lift solid-phase particles in the water flow channel, and finally sucks out the solid-phase particles in the water flow channel through the sewage suction pump, the sewage suction pump and the sewage suction port.

According to the invention, the ultraviolet fluorescent sensor is used for ranging, the data fed back in the normal state are fixed values, after the sedimentation quantity of solid phase particles is increased, the number fed back by the sensor is reduced after the sensor is covered on the sensor, when the data fed back by a row of data are reduced, the controller starts the driving mechanism, the driving mechanism enables the sewage suction pump to move to the outer side of the end part of the corresponding water flow groove, the sewage suction cover is covered on the corresponding water flow groove, the sewage suction pump generates negative pressure to enable water flow to enter the water flow channel between the sewage suction cover and the grille, meanwhile, the water flow is sprayed out through the water outlet pipe to lift the solid phase particles, and finally the solid phase particles are sucked out through the sewage suction pipe, so that the automatic sewage suction function is realized. Due to the existence of the grille, the dirt collecting area is automatically divided into a plurality of dirt sucking blocks. After the induction feedback data in a certain soil pick-up block starts the soil pick-up device, the soil pick-up cover moves to the upper part of the soil pick-up module under the action of the guide rope and the motor to start soil pick-up, so that the soil pick-up device is more convenient and faster, the amount of solid phase particles sucked can be increased, the technical problems of low soil pick-up efficiency and complex operation of the existing soil pick-up device are solved, automatic soil pick-up is obtained, sedimentation and collection of solid phase particles are facilitated, and the soil pick-up efficiency and the technical effect are improved.

As a further improvement of the scheme, the pond engineering circulating water culture system is also provided with a slideway, the driving mechanism is a sliding type sewage suction machine, and the sewage suction pump is arranged in the sliding type sewage suction machine; the sliding type sewage suction machine is arranged on the slideway and slides along the length direction of the slideway; the slideway is perpendicular to the water flow groove.

As a further improvement of the scheme, the water outlets on the two water outlet pipes are arranged in a staggered mode, and the opening angle of each water outlet is 60 degrees.

As a further improvement of the above solution, the height of the grating/the spacing between two adjacent gratings is between 3/10-4/9.

As a further improvement of the scheme, the gap of the gap space is 1-2cm, and the distance between two adjacent grids is 1m; the height of the grating is 0.3m, and the width of the grating is 0.053m; the width of the dirt collecting region is 6m.

As a further improvement of the scheme, each row of ultraviolet fluorescence sensors is arranged in the middle of the bottom wall of the corresponding water flow groove, and every two ultraviolet fluorescence sensors are in a group; the distance between two adjacent groups of ultraviolet fluorescence sensors is 4.5m, and the distance between two ultraviolet fluorescence sensors in each group of ultraviolet fluorescence sensors is 0.5m.

As a further improvement of the scheme, the water outlet is round and has a diameter of 5mm; the distance between two adjacent water outlets is 10cm, and the distance between two adjacent sewage suction openings is 5m.

As a further improvement of the above, the pond engineering recirculating aquaculture system further comprises a waste collection area; the waste collection area is connected with the sewage collection area, and the sewage suction pump sucks the solid-phase particles into the waste collection area through a plurality of sewage suction pipes.

As a further improvement of the scheme, the pond engineering circulating water culture system further comprises a front fish blocking grating, a rear fish blocking grating and a plurality of culture runways; the front fish blocking grating is arranged at the same end of the plurality of cultivation runways, and the rear fish blocking grating is arranged at the same other end of the plurality of cultivation runways; the multiple cultivation runways are arranged in parallel, and the same with the other ends of the cultivation runways face the sewage collecting area.

Further, the pond engineering circulating water culture system also comprises a solid-liquid separation device; the waste collection area comprises a main collection pool, a preparation pool and a daily collection pool; the daily collection tank is used for collecting sewage in the sewage collecting area and conveying the sewage to the collection main tank; a plurality of oxygenation pipes are arranged in the collecting main tank, a bottom water outlet is formed in the bottom of the collecting main tank and is communicated with the preparation tank, and water is discharged to an upper water outlet of the cultivation area from the top of the collecting main tank; the solid-liquid separation device is used for sucking sewage in the preparation pool and returning separated liquid waste to the main collection pool.

Compared with the existing sewage suction device, the efficient automatic sewage suction device for the pond engineering circulating water has the following beneficial effects:

1. this pond engineering circulating water high-efficient automatic dirt absorbing device, it is ranging through ultraviolet fluorescence sensor, the data of feedback is the fixed value during normal state, after solid phase granule subsides quantity increases, cover the back on the inductor the numerical value of inductor feedback and can reduce, the controller will start actuating mechanism when a row of data feedback data all reduce, actuating mechanism makes the dirt absorbing pump remove to the tip outside of corresponding rivers slot, and the dirt absorbing shroud is on the rivers slot that corresponds, the dirt absorbing pump produces the negative pressure and makes the rivers get into in the rivers passageway between dirt absorbing shroud and the grid, simultaneously spout the rivers through the outlet pipe and lift solid phase granule, finally suck solid phase granule through the dirt absorbing pipe, realize the function of automatic dirt absorbing. Due to the existence of the grille, the dirt collecting area is automatically divided into a plurality of dirt sucking blocks. After the induction feedback data in a certain soil pick-up block starts the soil pick-up device, the soil pick-up cover moves to the upper part of the soil pick-up block to start soil pick-up under the action of the guide rope and the motor, so that the soil pick-up device is more convenient and the amount of sucked solid phase particles can be increased. Like this, this dirt absorbing device can detect and absorb the deposit granule voluntarily, and the operation is more convenient, and the rivers passageway that comprises grid and dirt absorbing cover can make solid phase granule only disperse in rivers slot moreover, can not make the solid phase granule that lifts up spill outside the passageway, and the granule content is higher in the sewage of absorption, and dirt absorbing effect is better, can improve dirt absorbing efficiency and dirt absorbing effect.

2. This high-efficient automatic dirt absorbing device of pond engineering circulating water, it is compared traditional dirt absorbing and needs people to open and close regularly, needs dirt absorbing 4-6 times a day, generally only operates in daytime, can not operate at night, and it need not personnel to operate, and dirt absorbing device can reach the dirt absorbing in the induction zone automatically, in time also can be according to needs automatic dirt absorbing at late night.

3. This high-efficient automatic dirt absorbing device of pond engineering circulating water, its improvement collection dirt area structure can increase the length of rivers route to increased the rivers and stopped in the time of collection dirt area, increased the solid phase granule settling time in the rivers, thereby improved the sedimentation rate, more do benefit to solid phase granule sedimentation and collection, avoid solid phase granule can redisperse in the water when the device is inhaled dirt, prevent secondary dirt absorbing. In addition, because the grid blocks the action of water flow, an inherent reflux can be formed at the front and back of the grid, and the flow velocity of the reflux fixed at the back of the grid is relatively low, so that the sedimentation and collection of solid phase particles are facilitated. Experiments prove that the sedimentation rate of the modified sewage collecting region is improved from 37.77% to 53.26% in the prior art, and the sedimentation efficiency is improved by 41.01%.

4. The lowest position of the sewage suction port of the pond engineering circulating water high-efficiency automatic sewage suction device is only a small distance away from the bottom, and the influence of the movement of the sewage suction port on the re-lifting of solid-phase particles at the bottom is small. The traditional dirt sucking port is far away from the bottom, and solid phase particles which are deposited can be lifted again in the moving process. Moreover, this problem is not overcome by conventional soil pick-up devices, because the deposited solid phase particles cannot be sucked up after the distance between the soil pick-up port and the bottom is increased. In addition, the dirt absorbing device is favorable for sucking away solid-phase particles with high viscosity after the micro water flow lifts up, so that dirt absorbing efficiency is further improved.

Drawings

Fig. 1 is a schematic diagram of a part of a high-efficiency automatic sewage suction device for pond engineering circulating water in embodiment 1 of the present invention.

Fig. 2 is a top view of a dirt pickup housing of the pond engineering circulating water high efficiency automatic dirt pickup apparatus of fig. 1.

Fig. 3 is a top view of a water outlet pipe of the pond engineering circulating water efficient automatic sewage suction device in fig. 1.

Fig. 4 is a layout diagram of an ultraviolet fluorescent sensor of the pond engineering circulating water efficient automatic sewage suction device in fig. 1.

Fig. 5 is a flow field distribution diagram of a sewage collecting area of the pond engineering circulating water high-efficiency automatic sewage suction device in fig. 1 after a grid is added.

Fig. 6 is a graph showing the solid phase particle deposition distribution of the pond engineering circulating water high-efficiency automatic dirt suction device in fig. 1 after being added with a grid.

Fig. 7 is a graph showing a solid phase particle distribution diagram and a sonar survey and scanning verification diagram of a dirt collecting area before the pond engineering circulating water efficient automatic dirt absorbing device in fig. 1 is added into a grid, a is a solid phase particle tracking subgraph of the dirt collecting area, and b is a sonar survey and scanning diagram of the dirt collecting area.

Fig. 8 is a connection diagram of a solid-liquid separation device and a waste collection area of a cultivation system to which the pond engineering circulating water efficient automatic sewage suction device of embodiment 3 of the present invention is applied.

Fig. 9 is a schematic diagram of a cultivation system to which the pond engineering circulating water efficient automatic sewage suction device of embodiment 4 of the present invention is applied.

Fig. 10 is a schematic view of the structure of the main collection pond of the waste collection area of the reproductive system of fig. 9.

Fig. 11 is a simplified schematic diagram of a water pushing device (air-stripping water component, top frame are not shown) matched with the efficient automatic sewage suction device for pond engineering circulating water in embodiment 5 of the present invention.

Fig. 12 is a schematic view of a partial perspective structure of the water pushing device in fig. 11.

Fig. 13 is a schematic perspective view of another view of the water pushing device in fig. 12.

Fig. 14 is a graph showing the test effect of the conventional water pushing device in embodiment 5 of the present invention.

Fig. 15 is a graph showing the test effect of the pond engineering circulating water high-efficiency water pushing device in fig. 14.

Fig. 16 is a cross-sectional view of a water pushing device matched with the efficient automatic sewage suction device for pond engineering circulating water in embodiment 6 of the present invention.

Fig. 17 is a cross-sectional view of a water pushing device matched with the efficient automatic sewage suction device for pond engineering circulating water in embodiment 7 of the invention.

Fig. 18 is a cross-sectional view of a water pushing device matched with the efficient automatic sewage suction device for pond engineering circulating water in embodiment 8 of the present invention.

Symbol description:

1. bottom frame 23 dirt suction port

2. Side plate 24 water outlet pipe

3. Water outlet of water baffle 25

4. Ultraviolet fluorescent sensor of rear baffle 26

5. Cultivation area of top frame 31

6. Dirt collecting area of air pipe 32

7. Waste collection area of air outlet pipe 33

8. Solid-liquid separation device for air inlet pipe 34

9. Air pump 35 purifying zone one

10. Air valve 36 filter feeding area

11. Settling zone of dispersion tube 37

12. Biochemical area of membrane aerator 38

13. Mixing drum 39 purifying zone two

14. Flocculant inlet 40 central dam

15. Water inlet 41 passing dam

16. Sediment outlet 42 aquatic plant floating bed

17. Filter screen 43 aquatic plant floating bed II

18. Main collecting pool of disinfection lamp group 44

19. Stirring motor 45 preliminary tank

20. 46-day collecting tank with stirring fan blades

21. Grille 47 oxygenation tube

22. Biochemical net for dirt absorbing cover 48

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

Referring to fig. 1-4, the present embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is used for sucking sewage in a sewage collecting area in a pond engineering circulating water culture system. The sewage suction device can suck out solid-phase particles in the sewage collecting area and convey sewage containing the solid-phase particles to a waste collecting area of the cultivation system. The waste collecting area is connected with the sewage collecting area, and the two areas can be communicated with each other or through other parts. In this embodiment, the dirt absorbing device includes a grating 21, a dirt absorbing cover 22, a water outlet pipe 24, an ultraviolet fluorescent sensor 26, a dirt absorbing pipe, a dirt absorbing pump, a driving mechanism and a controller.

The number of the grills 21 is plural, and the grills 21 are parallel to each other and are disposed at the bottom of the dirt collecting region at equal intervals. The plurality of grills 21 form a plurality of water flow channels with the bottom wall of the dirt collection area, in which channels solid particles are deposited. In this embodiment, the height of the grating 21/the spacing between two adjacent gratings 21 is between 3/10-4/9, i.e. the ratio of height to spacing should be between these two ratios, but may also be 3/10 or 4/9. Under the proportional relationship, the sedimentation efficiency is the highest. Preferably, the width of the dirt collecting region is 6m, the height of the grating 21 is 0.3m, the width is 0.053m, and the distance between two adjacent gratings 21 is 1m. The surface of the grating 21 may be coated with an oxidation-resistant and corrosion-resistant coating, and of course, the grating 21 may also be directly made of a corrosion-resistant material. The length of the grating 21 is the same as or similar to the length of the dirt collecting region, and the thickness of the grating 21 should not be too thick, but not too thin, so that a sufficient contact surface with the bottom of the dirt collecting region is required. The grille 21 and the dirt collecting region can be connected by means of integral forming, welding, clamping connection, fixing of connecting pieces and the like, and in the embodiment, due to the effect of the grille 21, the length of a water flow path can be increased, so that the time t for water flow to stay in the dirt collecting region is increased. As t is increased, the sedimentation time of solid-phase particles in water flow is increased, so that the sedimentation rate is improved. Second, because the grille 21 blocks the flow of water, an inherent reflux is formed in front of and behind the grille 21, and the flow rate of the inherent reflux behind the grille 21 is relatively low, which is more beneficial to sedimentation and collection of solid phase particles. Experiments prove that the sedimentation rate of the modified sewage collecting region is improved from 37.77% to 53.26% in the prior art, and the sedimentation efficiency is improved by 41.01%.

The dirt pickup cover 22 is of inverted U-shape, i.e. open downwards, and has a width equal to the distance between two adjacent gratings 21. The dirt absorbing cover 22 covers the two adjacent grids 21 and forms a water flow channel with the water flow groove. The dirt suction cover 22 is provided with a plurality of dirt suction openings 23. Wherein, a gap space exists between the dirt absorbing cover 22 and the grille 21, so that water flow can be exchanged, and dirt absorbing can be carried out conveniently. In this embodiment, the gap space has a gap of 1-2cm, and this size allows external water flow to enter, while the solid phase particles inside are difficult to escape. Meanwhile, when the dirt is sucked, the deposited solid phase particles can be impacted when the external water enters through the gap space, so that the solid phase particles are fully and uniformly mixed in the water flow channel, and the suction efficiency and suction effect of the solid phase particles can be greatly improved.

The number of the water outlet pipes 24 is at least two, and the water outlet pipes 24 are arranged in parallel and fixed on the inner walls of the two opposite sides of the dirt suction cover 22. Each water outlet pipe 24 is provided with a plurality of water outlets 25 at equal intervals, and both ends of each water outlet pipe 24 are closed ends. The water outlet pipe 24 can be externally connected with external water pump mechanisms and the like, the water pump mechanisms and the like can provide water flow for the water outlet pipe 24, and the water flow can enter the water flow channel through the water outlets 25 to further impact the solid phase particles, so that the solid phase particles are lifted in the water flow channel, and the solid phase particles are conveniently sucked. In this embodiment, the water outlets 25 on the two water outlet pipes 24 are staggered, and the opening angle of each water outlet 25 is 60 degrees. The water outlet 25 is circular and has a diameter of 5mm. The distance between two adjacent water outlets 25 is 10cm, and the distance between two adjacent sewage suction ports 23 is 5m. In other embodiments, the shape and size of the water outlets 25 may be different from the present embodiment, and the distance between the water outlets 25 may be different, where the distance needs to be determined according to the cultivation system.

The number of ultraviolet fluorescence sensors 26 is a plurality of rows, each row having a plurality of ultraviolet fluorescence sensors 26. The plurality of rows of ultraviolet fluorescence sensors 26 respectively correspond to the plurality of water flow grooves, and each row of ultraviolet fluorescence sensors 26 is arranged on the bottom wall of the corresponding water flow groove. The ultraviolet fluorescence sensor 26 is used for generating an energy signal according to the sedimentation quantity of the solid phase particles in the corresponding water flow groove. In this embodiment, each row of ultraviolet fluorescence sensors 26 is disposed in the middle of the bottom wall of the corresponding water flow channel, and each two ultraviolet fluorescence sensors 26 are in a group. The distance between two adjacent sets of ultraviolet fluorescence sensors 26 is 4.5m, and the distance between two ultraviolet fluorescence sensors 26 in each set of ultraviolet fluorescence sensors 26 is 0.5m. The data fed back by the ultrasonic sensor (ultrasonic ranging) in the normal state are fixed values, and after the sedimentation quantity of solid phase particles is increased, the value fed back by the sensor is reduced after the solid phase particles are covered on the sensor. When the data feedback data of a row is reduced (half value is lower than the set threshold value), the solid phase particles in the water flow groove are deposited very much, and dirt suction is needed. Therefore, the ultraviolet fluorescence sensor 26 can detect solid-phase particles, and has very high sensitivity, so that the stock of the solid-phase particles can be accurately determined, and compared with manual determination, the detection of the ultraviolet fluorescence sensor 26 can be more accurate.

The number of the dirt sucking pipes is multiple, and the dirt sucking pipes correspond to the dirt sucking ports 23. One end of each dirt sucking pipe is connected to the corresponding dirt sucking port 23. The dirt sucking pipe may be available as dirt sucking pipes in the same number as the dirt sucking ports 23. The length of the dirt sucking pipe is related to the position of other equipment, and the inner diameter of the dirt sucking pipe is the same as or similar to the inner diameter of the dirt sucking port 23. The dirt absorbing pipe may be one corrosion resisting pipeline or one common pipeline with anticorrosive coating coated on the inner and outer surfaces.

The other end of each sewage suction pipe is connected to the sewage suction pump. The dirt suction pump is used for sucking solid phase particles in the water flow channel through the plurality of dirt suction pipes and sucking the solid phase particles into the waste collection area through the plurality of dirt suction pipes. The sewage suction pump can generate enough suction force to suck out solid-phase particles in the water flow channel together with the water body, and the sucked sewage can be conveyed into the waste collection area. The sewage suction pump can adopt the existing sewage suction pump, and parameters such as power and the like need to be determined according to the sewage suction amount and the distance between the waste collection area and the sewage collection area.

The driving mechanism is used for driving the sewage suction pump to move at one side of the same end of the plurality of water flow grooves. In this embodiment, the pond engineering circulating aquaculture system further has a slide, the driving mechanism is a sliding type sewage suction machine, and the sewage suction pump is installed in the sliding type sewage suction machine. The sliding type dirt suction machine is arranged on the slideway and slides along the length direction of the slideway. Wherein, the slide way is perpendicular to the water flow groove. In the driving process of the driving mechanism, the sliding type sewage suction machine drives the sewage suction pump to move on the slideway, and then forms different water flow channels with different water flow grooves in sequence, so that the solid-phase particles in all the water flow grooves are sucked. In the embodiment, the sliding type dirt suction machine automatically works for 15 minutes after the dirt suction machine is started, automatically resets and returns to the front end of the 1m water retaining wall. Experiments and practices prove that no solid phase particles are settled at the front end of the 1m water retaining wall.

The controller is configured to count the total number of energy signals with signal values lower than a set threshold according to the energy signals of each row of ultraviolet fluorescence sensors 26, and then determine whether the total number is greater than a preset number. The controller is also used to determine whether the energy signal of each row of ultraviolet fluorescence sensors 26 is decreasing. When the total number is greater than the preset number or the energy signals of each row of ultraviolet fluorescence sensors 26 are reduced, the controller drives the sewage suction pump to move to the outer side of the end part of the corresponding water flow groove through the driving mechanism, drives the sewage suction cover 22 to cover the corresponding water flow groove, drives the sewage suction pump to generate negative pressure in the water flow channel, enables water flow outside the water flow channel to enter the water flow channel through a gap space between the sewage suction cover 22 and the grid 21, simultaneously ejects water flow into the water flow channel through the water outlet pipe 24 to lift solid phase particles in the water flow channel, and finally sucks out the solid phase particles in the water flow channel through the sewage suction pump, the sewage suction pipe and the sewage suction port 23.

Referring to fig. 5 and 6, in this embodiment, the deposition rate of the solid phase particles is further improved after the grid is added to the dirt collecting region, and the simulation result shows that the deposition rate is improved by 23.32%. As can be seen from fig. 7, in the distribution of the solid-phase particle deposition positions in the sewage collecting region, solid-phase particle deposition points are arranged on the extension line in the sewage collecting region behind the culture tank, so that the mounting position of the ultraviolet fluorescent sensor is proved to have reasonability on the extension line in the sewage collecting region behind the culture tank.

As seen from table 1, the energy received by the sensor from the barrier is low when there is more deposition and high when there is less deposition. Starting from day 9 and day 28, setting an automatic detection sensor at intervals of 1 hour, and starting dirt suction when the received energy value is smaller than 14500; after 1 day, the energy value received by the sensor reaches 14500, which proves that the efficient automatic sewage suction device for the pond engineering circulating water can automatically suck sewage at regular time and gradually reach the requirement of the working threshold after the working threshold is set.

Table 1 cloud platform record uv fluorescent sensor receive energy value record results table

In summary, compared with the existing sewage suction device, the efficient automatic sewage suction device for the pond engineering circulating water of the embodiment has the following advantages:

1. this pond engineering circulating water high-efficient automatic dirt absorbing device, it is ranging through ultraviolet fluorescence sensor 26, the data of feedback is the fixed value during normal condition, after solid phase granule subsides quantity increases, cover on the inductor after the numerical value of inductor feedback can reduce, the controller will start actuating mechanism when a row of data feedback data all reduce, actuating mechanism makes the dirt absorbing pump remove the tip outside to corresponding rivers slot, and dirt absorbing cover 22 cover on corresponding rivers slot, dirt absorbing pump produces negative pressure and makes rivers get into the rivers passageway through between dirt absorbing cover 22 and the grid 21, simultaneously spout rivers through outlet pipe 24 and lift solid phase granule, finally suck solid phase granule through dirt absorbing pipe, realize automatic dirt absorbing function. Due to the existence of the grating 21, the dirt collecting region is automatically divided into a plurality of dirt sucking blocks. After the induction feedback data in a certain soil pick-up block starts the soil pick-up device, the soil pick-up cover 22 moves to the upper part of the soil pick-up block to start soil pick-up under the action of the guide rope and the motor, so that the soil pick-up is more convenient and the solid phase particle amount of the suction can be increased. Like this, this dirt absorbing device can detect and absorb deposit granule voluntarily, and the operation is more convenient, and the rivers passageway that comprises grid 21 and dirt absorbing cover 22 can make solid phase granule only disperse in rivers slot moreover, and can not make the solid phase granule that lifts up spill outside the passageway, and the granule content is higher in the sewage of absorption, and dirt absorbing effect is better, can improve dirt absorbing efficiency and dirt absorbing effect.

3. This high-efficient automatic dirt absorbing device of pond engineering circulating water, its improvement collection dirt area structure can increase the length of rivers route to increased the rivers and stopped in the time of collection dirt area, increased the solid phase granule settling time in the rivers, thereby improved the sedimentation rate, more do benefit to solid phase granule sedimentation and collection, avoid solid phase granule can redisperse in the water when the device is inhaled dirt, prevent secondary dirt absorbing. Moreover, because the grille 21 blocks the flow of water, an inherent reflux is formed in front of and behind the grille 21, and the flow rate of the inherent reflux behind the grille 21 is relatively low, which is more beneficial to sedimentation and collection of solid phase particles. Experiments prove that the sedimentation rate of the modified sewage collecting region is improved from 37.77% to 53.26% in the prior art, and the sedimentation efficiency is improved by 41.01%.

4. The lowest position of the sewage suction port 23 of the pond engineering circulating water high-efficiency automatic sewage suction device is only a small distance away from the bottom, and the influence of the movement of the sewage suction port on the re-lifting of solid-phase particles at the bottom is small. Whereas the conventional dirt suction opening 23 is located further from the bottom, the movement process will lift the deposited solid phase particles again. Moreover, this problem is not overcome by the conventional dirt suction device, and the deposited solid phase particles cannot be sucked after the distance between the dirt suction opening 23 and the bottom is increased. In addition, the dirt absorbing device is favorable for sucking away solid-phase particles with high viscosity after the micro water flow lifts up, so that dirt absorbing efficiency is further improved.

Example 2

The embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is similar to embodiment 1, and is different in that the pond engineering circulating water culture system in the embodiment further comprises a front fish blocking grid, a rear fish blocking grid and a plurality of culture runways. The front fish blocking grating is blocked on the same end of the plurality of cultivation runways, and the rear fish blocking grating is blocked on the same other end of the plurality of cultivation runways. The multiple cultivation runways are arranged in parallel, and the same with the other end of the cultivation runways face the sewage collecting area. When the sewage sucking device is used for sucking sewage, a user can directly observe the sewage sucking condition through the cultivation runway, and the sewage sucking problem is treated at the same time, so that the sewage sucking device is very convenient. In addition, the front fish blocking grating and the rear fish blocking grating can well play a role in protecting and preventing fishes from escaping.

Example 3

Referring to fig. 8, the present embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is similar to embodiment 1, except that the pond engineering circulating water cultivation system in this embodiment further includes a solid-liquid separation device 34 and a cultivation area. Further, the waste collection area 33 communicates with the dirt collection area 32 and serves to collect a portion of the contaminated water in the dirt collection area 32 and to stratify the contaminated water. In this embodiment, the waste collection area 33 includes a main collection tank 44, a reserve tank 45, and a day collection tank 46. The day tank 46 is used to collect the sewage in the sewage collection region 32 and deliver the sewage to the main tank 44. Wherein the daily collection tank 46 may have a volume of 2-4m ³ Of course, in other embodiments, the volume may be greater or lesser, depending on the amount of aquaculture water in the aquaculture area 31. The main collecting tank 44 is provided with a plurality of oxygenation pipes 47, the bottom is communicated with the preliminary tank 45, and the top is provided with an upper water outlet 25 for discharging water to the biochemical region 38. Wherein a plurality of oxygenation pipes 47 may be laid in parallel on the bottom wall of the collection main tank 44. The solid-liquid separation device 34 is used for solid-liquid separation of the bottom sewage in the waste collection area 33 and returning the separated liquid to the supernatant liquid of the waste collection area 33. In this embodiment, the solid-liquid separation device 34 is used to draw up the sewage in the preliminary tank and return the separated liquid waste to the main tank. The solid-liquid separator 34 may be any conventional solid-liquid separator such as a centrifuge, a disk separator, a tube separator, a chamber separator, etc. The solids separated by the solid-liquid separation device 34 can be used as fertilizer, especially as nutrient for plants in other areas of the cultivation system in this embodiment.

Example 4

Referring to fig. 9 and 10, the present embodiment provides a highly efficient automatic sewage suction device for pond engineering circulating water, which is similar to embodiment 3, except that the pond engineering circulating water culture system in this embodiment further includes a first purifying zone 35, a filter feeding zone 36, a settling zone 37, a biochemical zone 38, a second purifying zone 39, a central dam 40 and an overdam 41. Wherein, the cultivation area 31, the dirt collecting area 32, the first purifying area 35, the filter feeding area 36, the sedimentation area 37, the biochemical area 38 and the second purifying area 39 are arranged around and form a closed loop structure.

The cultivation area 31 is used for cultivating various aquatic products such as various fishes and shrimps. The farm 31 is generally rectangular in shape and its internal farm density is related to the capacity of the system to treat the body of water. When the water body treatment capacity is strong, the cultivation density can be very high, the sewage quantity generated at the moment can be very high, the generation time is relatively short, the water bodies cannot be reused if the treatment is not completed, meanwhile, water is required to be changed, and a large amount of sewage treatment can be performed in the embodiment. The size of the cultivation area 31 can be determined according to actual needs, and the kind and density of the cultivated aquatic products can also be determined according to actual needs. The front fish-blocking grating, the rear fish-blocking grating and a plurality of cultivation runways are arranged in the cultivation area 31. The front fish blocking grating is blocked on the same end of the plurality of cultivation runways, and the rear fish blocking grating is blocked on the same other end of the plurality of cultivation runways. The multiple cultivation runways are arranged in parallel, and the same with the other ends of the cultivation runways face the sewage collecting area 32.

The sewage collecting region 32 communicates with the cultivation region 31 and serves to collect sewage generated in the cultivation region 31. The area of the sewage collection region 32 is relatively small, which collects sewage while preventing these from being returned to the cultivation region 31 by mistake. Thus, when set, the height of the water outlet portion of the cultivation area 31 may be higher than the water surface level of the sewage collection area 32, which is collected directly, i.e. by overflow. In other embodiments, the sewage collecting area 32 is communicated with the cultivation area 31 through a water supply device such as a water pump, and the sewage collecting area 32 and the cultivation area 31 are not directly communicated, but the water surface height of the sewage collecting area 32 and the cultivation area 31 is not required, and only the water supply device is required to convey the water body generated in the cultivation area 31 to the sewage collecting area 32.

The first purifying zone 35 communicates with the sewage collecting zone 32 and receives another portion of sewage in the sewage collecting zone 32 and provides at least one first aquatic plant floating bed 42. In this embodiment, the first aquatic plant floating bed 42 is planted with cress and/or giant knotweed, and has a main function of absorbing phosphorus elements in the water body, and a secondary function of attaching large particles in the water body, so that the water body is purified while cultivation is realized. Simultaneously planted giant knotweed can be used for preventing fish diseases. In this embodiment, the cultivation area 31, the sewage collecting area 32 and the purifying area one 35 are arranged in a row, so as to realize primary purification of sewage.

The filter feeding region 36 communicates with the first purification region 35 and is populated with at least one filter feeding organism. Wherein the filter feeding organism is silver carp or/and silver carp. The yellow silver carp mainly eats zooplankton in the water body, and the silver carp mainly eats algae in the water body. The organisms in the filter feeding area 36 can play a role in biological filtration, and as algae absorb nitrogen, phosphorus and other elements, zooplankton can solidify a part of nitrogen, phosphorus, so that the filter feeding organisms can finally solidify the nitrogen, phosphorus elements in the body, the filter feeding area can be used as a cultured aquatic product, can play a role in purifying, can greatly reduce the purifying cost and improve the economic benefit.

The sedimentation zone 37 communicates with the filter-feeding zone 36 and is provided with at least one biochemical screen 48 for sedimentation of the sewage flowing in from the filter-feeding zone 36. In this embodiment, the sedimentation zone 37 is also provided with a suction brush. The adsorption brushes are mounted on the biochemical net and used for depositing particles. The sedimentation zone 37 can sediment small particles, filter the water body and improve the cleanliness of the water body.

The biochemical region 38 communicates with the sedimentation region 37 and is provided with a plurality of aeration tubes. The biochemical region 38 is for receiving the supernatant liquid from the waste collection region 33 and the supernatant liquid from the sedimentation region 37, and performing aeration treatment on the mixture formed by the supernatant liquid and the supernatant liquid. The biochemical region 38 can be aerated to increase oxygen content of the water body, and further can increase the cultivation density of the water body. The biochemical region 38 is a microorganism cultivation region of the cultivation system, can improve the biodiversity of the cultivation water body, provides more food for the cultivation water product, and ensures the living environment of the cultivation water product.

The passing dam 41 is arranged in the sedimentation area 37 and the biochemical area38. Wherein the sewage of the upper layer of the sedimentation zone 37 passes above the passing dam 41 into the biochemical zone 38. In this embodiment, the passing dam 41 includes a frame body, ceramsite, and wire netting. The support body sets up between sedimentation area 37 and biochemical district 38, and the wire netting parcel is on the support body, and the haydite is filled in the support body. The haydite can provide propagation and survival sites for nitrifying bacteria and other beneficial bacteria to further poison in water, such as NO ₂ Conversion to non-toxic, e.g. NO ₃ And further absorbed by plants, thereby completing the transformation process and realizing the purification function of the water body.

The second purifying zone 39 is communicated with the biochemical zone 38, and at least one second aquatic plant floating bed 43 is arranged. The second purifying zone 39 is used for receiving and purifying the mixed solution after the aeration treatment of the biochemical zone 38, and delivering the purified water body to the culturing zone 31. In this embodiment, both the second purification zone 39 and the first purification zone 35 are provided with waterways. The water course includes the wall and the structure on the bank that slows, slows the wall setting in purifying zone one 35 or purifying zone two 39 water territories. The on-shore structure is arranged on the slow water wall and encloses a planting area. The first aquatic plant floating bed 42 or the second aquatic plant floating bed 43 is disposed in the planting area. The second aquatic plant floating bed 43 is planted with cress and/or giant knotweed, which is similar to the first aquatic plant floating bed 42, and the water course is planted with one or more of lotus root, japanese dock herb and cordate houttuynia. The aquatic plant floating bed 42 has the main function of absorbing phosphorus element in the water body, and has the secondary function of attaching large particles in the water body, so that the water body is purified while the cultivation is realized. Simultaneously planted giant knotweed and houttuynia cordata can be used for preventing fish diseases.

The central dam 40 is provided with a planting area in which flowers and Chinese medicines can be planted, and emergent aquatic plants such as canna are planted at the junction of the central dam 40 and the water surface. In this embodiment, the cultivation area 31, the dirt collecting area 32, the first purifying area 35, the filter feeding area 36, the sedimentation area 37, the biochemical area 38 and the second purifying area 39 are arranged around the central dam 40, so that the planting area can simultaneously purify the water in the areas, the purifying range can be improved, and the purifying efficiency is improved. While in other embodiments these areas may also be provided around other devices or areas.

In summary, the pond engineering circulating water zero-emission culture system has the following advantages:

1. according to the pond engineering circulating water zero-emission culture system, a sewage collecting area 32 and a waste collecting area 33 are subjected to solid-liquid separation through a solid-liquid separation device 34, separated supernatant can be returned to a biochemical area 38, a purifying area I35 and a purifying area II 39 absorb phosphorus elements by plants, filter feeding organisms in a filter feeding area 36 can eat zooplankton and algae in a water body, a sedimentation area 37 can play a role of sedimentation of small particles, the biochemical area 38 can be subjected to aeration and oxygenation, biological flocs can be cultured, the areas are all arranged in a surrounding mode, a closed-loop structure is formed, and the water body can be subjected to circulating treatment without direct discharge. Thus, the flow field and the outer pond space in the circulating water are reasonably utilized, the cultivation tail water treatment and the production are organically combined together, and the tail water treatment can be carried out by using 60-90% of the water body area, so that the national requirements are met, the water treatment effect can be ensured, meanwhile, the cultivation yield can be greatly improved.

2. The pond engineering circulating water zero-emission culture system removes solid-phase particles with the size in water bodies in physical modes of oxygenation, filtration, sedimentation and the like, and utilizes plants to absorb phosphorus elements in a biological mode and biological flocs to extract nitrogen elements, so that the water bodies are purified while culture is realized, and the safe and green culture modes of zero-water changing, zero-drug consumption and high-density culture are realized by combining physical purification and biological purification.

3. According to the pond engineering circulating water zero-emission culture system, a culture zone 31, a sewage collecting zone 32, a first purifying zone 35, a filter feeding zone 36, a sedimentation zone 37, a biochemical zone 38 and a second purifying zone 39 can be arranged around a central dam 40, and a planting zone is arranged on the central dam 40, so that the planting zone can simultaneously purify water bodies in the zones, the purifying range can be improved, and meanwhile, the purifying efficiency is improved.

4. The pond engineering circulating water zero-emission culture system can return layered supernatant water to the culture pond, sediment sewage at the bottom layer is discharged to the preparation pond 45, and water at the middle layer is reserved in the waste collection area 33 for continuous propagation. After the liquid in the preparation pool 45 reaches a certain amount, water is connected into the solid-liquid separation device 34 for solid-liquid separation, the separated solid can be used as fertilizer required by plant growth, the separated liquid returns to the waste collection area 33 and is added with biological flocculation again, and the water is further purified, so that the sewage treatment efficiency can be improved, the water treatment effect is better, the waste collection area 33 is not required to work at full load, and the tail water treatment is more timely.

5. The pond engineering circulating water zero-emission culture system comprises a water channel, wherein the water flow passes through a water-retarding wall and a water bank after coming out of a sewage collecting area 32, an aquatic plant floating bed is arranged in the water channel, aquatic plants such as cress, polygonum cuspidatum and the like with developed root systems are planted, and the water channel mainly has the effects of absorbing phosphorus elements in water bodies and secondarily has the effect of attaching large particles in the water bodies. One of lotus root, herba Hedyotidis Diffusae and herba Houttuyniae is planted in the water channel, and rhizoma Polygoni Cuspidati and herba Houttuyniae can be used for preventing fish diseases.

Example 5

Referring to fig. 11, 12 and 13, the present embodiment provides a highly efficient automatic sewage suction device for pond engineering circulating water, which is the same as the sewage suction device in embodiment 4, but is used together with a water pushing device. The water pushing device is used for providing a culture water body which is dissolved with oxygen and has fluidity for one culture area 31. The water pushing device may be disposed at a front end of a cultivation area 31 of a cultivation system, and may transport a circulating water body generated by the cultivation system into the cultivation area 31. The water pushing device comprises a bottom frame 1, side plates 2, a water baffle 3, a rear baffle 4 and a gas stripping water component, and can also comprise a top frame 5.

The bottom frame 1 mainly plays a role in connecting and supporting the whole device, and generally adopts a rectangular frame, and in the embodiment, the bottom frame 1 can be correspondingly adjusted according to the corresponding parts, and only the bottom frame 1 can be ensured to pass through a water body. The bottom frame 1 may be fixed to the front end of the cultivation area 31, for example, by welding, fastening by a connector, or the like. The bottom frame 1 may be formed by splicing a plurality of frames, or may be an integrally formed structure. The bottom frame 1 may be made of a corrosion-resistant impact-resistant material, or may be coated with a corrosion-resistant material on its surface. The size of the bottom frame 1 can be set according to the requirements of the cultivation area 31, and the material for manufacturing the bottom frame is made of a material with higher hardness, so that the bottom frame is not easy to deform.

The number of the side plates 2 is two, the two side plates 2 are arranged in parallel, and the bottoms are respectively fixed on the opposite ends of the bottom frame 1. The top of each side plate 2 is an arc-shaped section, and the end faces of the arc-shaped sections of the two side plates 2 are positioned on the same arc surface. The side plate 2 has four sides, wherein the uppermost side is an arc side, and the other sides may be arc sides or straight sides. In this embodiment, the arc height of the arc-shaped section of the side plate 2 is 0.12m. The side plates 2 are coated with a corrosion-resistant material, although it is also possible to use corrosion-resistant materials per se. The side plate 2 needs to have a certain hardness, and thus needs to be made of a material having a large hardness. The two side plates 2 are connected with the bottom frame 1 through welding or a plurality of screws I, and the two side plates 2 are connected with the water baffle 3 through welding or a plurality of screws II. Of course, the side plate 2 may be fixed to the bottom frame 1/the water deflector 3 by other means such as a snap fit.

The water baffle 3 is arc-shaped and is positioned on the arc surface. The water baffle 3 has four arc edges connected in sequence. Wherein the two arc edges are parallel and oppositely arranged and are respectively overlapped with the arc sections of the two side plates 2. In the other two arc edges, the two arc edges are parallel and opposite, the height of one arc edge is lower than that of the other arc edge, the two ends of one arc edge extend to the same side of the two side plates 2 respectively, and the two ends of the other arc edge extend to the same side of the two side plates 2 respectively and form a water pushing opening structure. The concave surface of the water deflector 3 faces the bottom frame 1 and the convex surface faces outwards. The breakwater 3 is of a trapezoid fillet structure, the structural part of the breakwater is changed into an arc water pushing port with a certain arc height, the arc design of the water pushing port mainly plays a role in diversion of water flow, so that water flow from pushing water is more concentrated on two sides of the water pushing port structure, the influence of inherent backflow is reduced, diversion is not influenced, the water pushing efficiency is not only improved, but also the water changing amount is increased, and the influence of water pushing effect on the activity of fish shoals is reduced.

In this embodiment, the sidewall of the concave surface of the water baffle 3 may be coated with a wear-resistant and corrosion-resistant material, so that it is ensured that the water flow does not damage the water baffle 3 when it impinges on the water baffle 3. The material of the water baffle 3 should be a material with relatively high hardness, such as aluminum alloy, stainless steel, etc., which can withstand large impact and is not easy to deform. The size of the water baffle 3 is set according to practical needs, and especially the radian of the water baffle can be selected according to the needs. In this embodiment, the arc height of the water baffle 3 near the arc edge of the cultivation area 31 is 0.6m, that is, an arc water pushing port with the arc height of 0.6m is formed.

The two ends of the back baffle 4 are respectively fixed on the same side of the two side plates 2, the top is fixedly connected with the water baffle 3, and the bottom is fixed on the bottom frame 1. The tailgate 4 serves to engage the side plates 2, the water deflector 3 and the bottom frame 1, and prevents water from flowing out of the rear end while having a small height relative to the water-pushing port. The tailgate 4 may also be coated with a corrosion-resistant material and is made of a pressure-resistant and impact-resistant material. The shape of the tailgate 4 is dependent on the shape of the other structures, and in general, it also has a curvature, which better diverts the flow. In the present embodiment, the tailgate 4 is connected to the bottom frame 1, the two side plates 2, and the water deflector 3 by welding or a plurality of screws two.

The stripping assembly is mounted on the bottom frame 1 and is used to push the body of aquaculture water below the bottom frame 1 from the bottom frame 1 to the splash plate 3 for diversion and pushing out of the water push port to the aquaculture area 31. In this embodiment, the air stripping assembly comprises an air delivery pipe 6, an air outlet pipe 7, an air inlet pipe 8, an air valve 10, an air pump 9 and a dispersing pipe 11. The number of the air delivery pipes 6 is multiple, and the multiple air delivery pipes 6 are arranged on the bottom frame 1 side by side at intervals. The number of the air outlet pipes 7 is multiple, the air outlet pipes 7 are communicated with the air delivery pipes 6, and the air outlet is arranged towards the water baffle 3. The number of the air inlet pipes 8 is also multiple, and the air inlet pipes 8 are communicated with the air delivery pipes 6. The number of air pumps 9 is at least one, and the air pumps 9 are used for delivering air flow to the plurality of air delivery pipes 6 through the plurality of air inlet pipes 8. The number of the air valves 10 is plural, and the plural air valves 10 correspond to the plural air intake pipes 8, respectively. Each air valve 10 is mounted on a corresponding air intake pipe 8 and is used to adjust the amount of air flow of the corresponding air intake pipe 8. The bottom ends of the air inlet pipes 8 are connected to the dispersing pipes 11, and one ends, far away from the culture area 31, of the air inlet pipes 6 are connected to the dispersing pipes 11 and are communicated with the air inlet pipes 8 through the dispersing pipes 11.

The top frame 5 is mounted on the bottom frame 1 and the splash plate 3. Wherein a plurality of air inlet pipes 8 and at least one air pump 9 are mounted on the top frame 5. The top frame 5 can be connected with other equipment of the cultivation area 31, and plays a role in limiting and fixing the water pushing device. In some embodiments, the top frame 5 and the bottom frame 1 may be integrally formed, i.e. the upper and lower parts of the same frame. The top frame 5 is also made of a material with higher hardness, and the surface can be coated with a corrosion-resistant coating, such as paint, so that rust prevention can be realized and the service life can be prolonged.

Referring to fig. 14 and 15, it can be seen from the figures that when the circular arc water pushing port is adopted, the backflow area is opened from the bottom and is respectively concentrated at the left side and the right side, while when the conventional linear water pushing port is adopted, the backflow area is basically closed, and the front end of the whole culture tank is affected. The water pushing flow rates of the two water pushing pipes are respectively straight water pushing (341.39828 kg/s) and arc water pushing (337.267361 kg/s). The water pushing efficiency is only reduced by 1.21%. In order to realize the water flow diversion effect of the water pushing port, 6 schemes such as a 30-degree diversion plate, a 15-degree diversion plate, a flow breaking plate, a drainage plate, a semi-suspension diversion plate, split type variable speed water pushing and the like are sequentially tested, and as a result, the water pushing effect is very influenced although the split type variable speed water pushing effect can be realized, and the water pushing efficiency is reduced by about 30% -10%. Finally, the arc-shaped water pushing port is adopted to achieve the effects of diversion and no influence on water pushing efficiency.

1. this pond engineering circulating water zero release farming systems, its water installation that pushes away is through being trapezoidal fillet structure with 3 structural designs of breakwater, with the water-retaining mouth of a river structural part change into the circular arc that has certain arc and push away the mouth of a river, push away mouth of a river circular arc design, mainly play the effect to the rivers reposition of redundant personnel, make the rivers that push away the water come out more concentrate on pushing away the both sides of mouth of a river structure, thereby reduce the influence of inherent backward flow, both reposition of redundant personnel and do not influence and push away water efficiency, and increased the water volume of changing, reduced the influence of pushing away the water effect to the shoal of fish activity.

2. According to the pond engineering circulating water zero-emission culture system, the water pushing effect of the water baffle 3 in the experimental right angle, the 45-degree angle, the round angle and the trapezoid round angle 4 is compared by the water pushing device, and the result shows that under the same water pushing power condition, the water pushing efficiency of the water baffle 3 of the trapezoid round angle of the water pushing device is highest, the water pushing efficiency of 19.13% is improved compared with that of the water baffle 3 of the 45-degree angle (traditional design), and the water pushing efficiency of 5.91% is improved compared with that of the water baffle 3 of the round angle (traditional design).

3. According to the pond engineering circulating water zero-emission culture system, the water pushing device increases the original water pushing efficiency and the water changing amount under the condition of not increasing any power consumption, so that the dissolved oxygen consumption of the cultured aquatic products is facilitated to be supplemented; meanwhile, the pushed water flow is in a two-wall split type, so that the two avoidance surfaces in the culture tank are high in flow speed, and the middle area is low in flow speed, and the influence of the water pushing effect on the fish shoal activity is further reduced. Therefore, under the same feeding condition, the yield of the aquatic products cultivated by the water pushing device can be greatly improved, and more economic benefits are generated.

Example 6

Referring to fig. 16, the present embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is similar to the sewage suction device of embodiment 5, except that the air-lift water component of the water pushing device in this embodiment is different. In this embodiment, the stripping assembly comprises a gas pipe 6, a gas outlet pipe 7 and a membrane aerator 12. The number of the air delivery pipes 6 is multiple, and the air delivery pipes 6 are wound on the bottom frame 1 and used for providing air flow to the air outlet pipes 7. The number of the air outlet pipes 7 is multiple, the opening ends of the air outlet pipes 7 are arranged towards the water baffle 3, and each diaphragm aerator 12 is arranged on the opening end of the corresponding air outlet pipe 7. The membrane aerator 12 is a membrane microporous aerator. The membrane aerator 12 has small bubbles and large gas liquid level, and the bubbles are uniformly diffused and can not be blocked by holes. Therefore, by utilizing the characteristic that air floats in water, an external fan is used for inflating through the air conveying pipe 6, the air outlet pipe 7 and the membrane aerator 12 to generate a large number of floating microbubbles, and the microbubbles can drive the pond water to flow through the water baffle 3 and then flow in from the inflow end of the culture tank and flow out from the outflow end of the culture tank when the microbubbles are used for oxygenation of the pond water, so that the purposes of water flow of the culture unit and water quality improvement are achieved.

Example 7

Referring to fig. 17, this embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is similar to the sewage suction device of embodiment 6, except that a mixing drum 13 is added in this embodiment. A mixing drum 13 is mounted below the bottom frame 1 and serves to contain a body of aquaculture water. The culture water body is a water body obtained by mixing a bioflocculant and a pond water body. In this embodiment, the mixing drum 13 is bullet-shaped or spherical, and has at least one flocculant inlet 14, at least one water inlet 15, and at least one sediment outlet 16 on the bottom wall. The flocculant inlet 14 is used for allowing external flocculant to enter, and the water inlet 15 is used for allowing external water or circulating water generated by culture treatment to enter, so that the flocculant and the water are mixed in the mixing drum 13 to form a culture water body. The aquaculture water can flow out from the mixing drum 13 to the water baffle 3 for diversion through the action of the air stripping water component, so that the water pushing process is realized.

Example 8

Referring to fig. 18, this embodiment provides a high-efficiency automatic sewage suction device for pond engineering circulating water, which is similar to the sewage suction device of embodiment 7, except that a filter screen 17, a sterilizing lamp set 18 and a stirring assembly are added in this embodiment. A filter screen 17 is installed between the mixing drum 13 and the bottom frame 1 for filtering the aquaculture water entering the bottom frame 1 from the mixing drum 13 such that large flocs cannot pass through but remain in the mixing drum 13. The sterilizing lamp group 18 is installed in the mixing drum 13 for sterilizing the aquaculture water, which may be an ultraviolet lamp group. The stirring assembly comprises a stirring motor 19 and a plurality of groups of stirring blades 20, wherein the stirring motor 19 is arranged in the mixing drum 13, and the plurality of groups of stirring blades 20 are arranged on an output shaft of the stirring motor 19. The stirring motor 19 drives the stirring fan blades 20 to rotate through rotation, so that the residual flocculation is crushed, and the crushed flocculation can pass through the filter screen 17, so that the flocculant in the culture water body finally entering the bottom frame 1 from the mixing drum 13 is ensured to be uniformly dispersed, and larger flocculation cannot occur. Meanwhile, as the aquaculture water body is sterilized, the sanitation of the aquaculture water body can be ensured, and bacteria are prevented from infecting aquaculture water products.

Example 9

The embodiment provides a pond engineering circulating water zero-emission culture method, which is applied to the culture system of the embodiment 4. The cultivation method comprises a treatment method of pond engineering circulating water tail water, and the treatment method comprises the following steps.

Step one, the sewage generated in the breeding area 31 is discharged into the waste collecting area 33 through the sewage collecting area 32, and the amount of the waste liquid in the waste collecting area 33 is counted. When the amount of waste liquid reaches a predetermined proportion of the capacity of the waste collection area 33, it is noted as the first day. In this example, the first day is counted when the waste liquid in the waste collection area 33 reaches 1/3.

And step two, on the first day, opening a plurality of oxygenation pipes, throwing EM bacteria and carbon sources into the main collection tank 44, sucking sewage in the sewage collecting area 32 into a daily collection tank, and discharging all sewage in the daily collection tank into the main collection tank 44 at regular time. In the embodiment, 4g of EM bacteria and 10ml of carbon source are put into each cubic water body, and the carbon source is molasses. From day to day, the sewage suction from the sewage collection area 32 is placed in a day collection tank by a sewage suction device every day. The sewage in the daily collection tank is discharged to the waste collection area 33 all at 9 am every day, so that the carbon nitrogen ratio (C/N) in the water body can be controlled more effectively.

And thirdly, the next day, the EM bacteria and the carbon source are thrown into the collecting main tank 44, and the throwing amount is half of that of the EM bacteria and the carbon source in the first day. Specifically, the feeding amount is 2g of EM bacteria and 5ml of carbon source (molasses) are put into each water body.

Fourth, on the third day, photosynthetic bacteria culture solution, EM bacteria and carbon source are put into the collecting main tank 44 at the morning at regular time, and the night is reachedThe lactobacillus culture solution is periodically put into the collecting main tank 44, and the photosynthetic bacteria culture solution is put into the collecting main tank every three days, and the lactobacillus culture solution is put into the collecting main tank every five days, and the EM bacteria and the carbon source are put into the collecting main tank every day. In this example, the photosynthetic bacteria culture solution was put in at 9 points in the morning for 30 minutes at 3ml/m ³ EM bacteria 2g/m ³ Carbon source (molasses) 2ml/m ³ At 19 pm, lactobacillus culture solution 1ml/m is put in ³ . The photosynthetic bacteria culture solution is put in 1 time every 3 days, the lactic acid bacteria is put in 1 time every 5 days, and the EM bacteria and molasses are put in every day. Wherein, every 50 jin of lactobacillus culture solution is obtained by mixing 60 g of lactobacillus, 600 g of brown sugar and 600 g of corn meal in the culture wastewater to form 50 jin of water body, fermenting for 4-7 days in a sealing way, and culturing after the PH reaches 3-4.

And fifthly, when the waste liquid amount reaches the capacity of the waste collection area 33, namely when the waste collection area 33 is full (more than 10 days), storing the sewage collected by the sewage suction device on the same day in a daily collection tank, closing a plurality of oxygenation pipes, standing (generally standing for 6 hours) to collect the main tank 44, opening the upper water outlet 25, and discharging supernatant of the main tank 44 into the culture area 31. Wherein, the distance between the upper water outlet 25 and the top end of the main collecting tank 44 is 1/3 of the height of the main collecting tank 44.

And step six, when the supernatant liquid discharge is completed, the bottom water outlet 25 is opened, and the bottom liquid of the main collecting tank 44 is discharged into the preparation tank 45. Wherein the amount of liquid discharged from the bottom layer is 1/3 of the total volume of the collecting main tank 44.

When all of the underlying liquid is discharged to the preliminary tank 45, step two is performed. I.e. the task of feeding on day 1 (feeding EM bacteria 4g and molasses 10ml per square body of water) is repeated after the bottom liquid discharge is completed, and on day 2 the next day, and so on, until the next waste collection area 33 is full.

And step seven, when the volume of the bottom liquid in the preparation tank 45 reaches a preset volume, and the preset volume is equal to the volume of the preparation tank 45, solid-liquid separation is performed on the bottom liquid through the solid-liquid separation device 34, the separated liquid is returned to the collecting main tank 44, and the separated solid is used as plant fertilizer of the culture system.

In this example, wastewater treatment experiments were performed, and ammonia nitrogen and nitrite in the aquaculture wastewater were as follows: ammonia nitrogen 0.56mg/L, and nitrite 0.213mg/L, and after treatment: ammonia nitrogen 0.08mg/L and nitrite 0.012mg/L. And the particle composition of the liquid-solid phase of the lower layer deposition reaches 50 percent after the treatment. Therefore, the treatment method has very good treatment effect and very high purification degree.

Therefore, the pond engineering circulating water zero-emission culture method has the following advantages:

1. the cultivation method is characterized in that sewage generated in the cultivation area 31 is collected through the sewage collecting area 32, the sewage in the sewage collecting area 32 is sucked through the daily collecting tank, the daily collecting tank can convey the sewage to the collecting main tank 44, so that a large amount of sewage can be prevented from entering the collecting main tank 44, EM bacteria and a carbon source are put into the collecting main tank 44, high-concentration biological flocculation can be formed, and cultivation tail water treated by the high-concentration biological flocculation is formed. According to the method, excessive nitrogen sources in wastewater are utilized to cultivate beneficial bacteria to form biological flocs, the biological flocs suspended in the water body are propagated, the volume is increased, when the sedimentation volume index of the biological flocs reaches a certain value (120-150 mL/g), obvious biological flocculation effect can occur, the individual weight of the suspended biological flocs exceeds the buoyancy, sedimentation begins to occur, and impurities in the water body can be further brought into a sedimentation layer during sedimentation, so that the water body purifying effect is achieved. Meanwhile, the biological flocs consume nitrogen elements in the wastewater during propagation, so that harmful substances such as ammonia nitrogen, nitrite and the like in the wastewater are reduced, and water source pollution is prevented.

2. The cultivation method returns the layered supernatant water to the cultivation pond, the deposited sewage at the bottom layer is discharged to the preparation pond 45, and the water at the middle layer is reserved in the waste collection area 33 for further propagation. After the liquid in the preparation pool 45 reaches a certain amount, water is connected into the solid-liquid separation device 34 for solid-liquid separation, the separated solid can be used as flower fertilizer, the separated liquid returns to the waste collection area 33 and is added with biological flocculation again, and the water body is further purified, so that the sewage treatment efficiency can be improved, the water body treatment effect is better, the waste collection area 33 is not required to work under full load, and the tail water treatment is more timely.

3. The culture method has the advantages that the components of the liquid-solid phase particles of the lower layer sediment after the biological flocculation treatment can reach 50%, the tail water treatment degree is high, and the separation is convenient. In addition, the main components of the treated solid are beneficial bacteria and organic nitrogen, so that the organic conversion of harmful substances in the cultivation wastewater is realized, and the harmful substances are extracted in a solid form, thereby fundamentally avoiding secondary pollution of sewage.

Example 10

The embodiment provides a pond engineering circulating water zero-emission culture method, which is applied to the culture system of the embodiment 4. Wherein the mouth of the daily collection tank is sealed by a plastic film, and a plurality of pressure reducing valves are arranged on the film. The bottom of the daily collection tank is in a pot shape, a ground drain outlet is arranged in the tank, and a water outlet I is arranged on the upper wall of the tank. The bottom of the collecting main tank is in a pot shape, and a ground drain outlet is arranged in the tank; a second water outlet is arranged at one third of the upper part of the collecting main tank; a fixed grille is arranged at the upper third and the lower third of the collecting main pool respectively, and filler is placed in the fixed grille; the packing placement requirement is that the specific surface area of the main collection pool is greater than 3.2, and the quotient of the area of the main collection pool plus the area of the packing divided by the main pool water body is greater than 3.2. Taking 90cm of water depth of the collecting main pool as an example, the water outlet is positioned at the position of 60cm of water depth, a fixed grid is arranged at the position of 30cm of water depth and 60cm of water depth, and the fixed range of the grid is between 30cm and 60cm of water depth.

The sewage circulation route is as follows: residual baits and faeces generated by cultivation are deposited in the sewage collecting area, then enter a daily collecting tank through an automatic sewage sucking device, and after the residual baits and faeces are deposited for 8 hours in the anaerobic environment of the daily collecting tank, supernatant fluid enters a collecting main tank. Most of sewage flows back to the cultivation area after passing through biological denitrification in the main collecting pool, and the small part of sewage and sediment enter the preparation pool and return to the main collecting pool after solid-liquid separation. Therefore, the processing method of the present embodiment includes the following steps.

Firstly, discharging sewage generated in the culture area into the waste collection area through the sewage collection area, sterilizing and aerating after the collection main pool is full of clean water, and entering a culture period: adding 2-5 g of EM bacteria and 500-1000 g of sodium acetate into the sewage in the main collecting pool at regular time twice daily, continuously aerating, and detecting the nitrite concentration of the sewage in the main collecting pool at regular time daily. When the nitrite concentration is reduced to 0.02-0.05mol/L, the cultivation period is ended and the propagation period is started.

In this example, at the incubation period, the sewage is fed to the main collection tank at 9:00 and 18:00 points daily, and the indexes meet: the water temperature is 26-34 ℃, the PH is 8-8.5, the dissolved oxygen is above 5, and the sewage level of the main pool is 75-90cm. In addition, the method is prepared before cultivation, after the main pool is filled with clear water, 3-5 g of trichloroisocyanuric acid is added into each cubic water body to disinfect the pool body, after 12 hours, the main pool oxygenation pipe is started, and full pool aeration is started. Detecting and collecting residual chlorine concentration in the water body of the main tank after 36 hours of aeration, adding 10 g of urea per cubic water body and starting to enter a cultivation period when the residual chlorine concentration is 0.

Step two, entering a propagation period: firstly, adding 2-5 g of EM bacteria and 500-1000 g of sodium acetate into sewage in the main collecting pool twice daily at regular time, continuously aerating, and detecting the nitrite concentration of the sewage in the main collecting pool at regular time daily. Then, the supernatant removal operation flow is performed: when the nitrite concentration is reduced to 0.02-0.05mol/L, closing aeration in the main collecting tank, standing for precipitation (the time of standing for precipitation is 30-60 minutes), discharging 1/3 of supernatant in the main collecting tank into the culture area, adding new sewage from the daily collecting tank to the raw water level after discharging the supernatant each time, simultaneously opening aeration of the main collecting tank, continuing the cultivation operation flow, and detecting the ammonia nitrogen concentration of the sewage in the main collecting tank every day at regular time. Finally, the operation flow of bottom closing is carried out: when the ammonia nitrogen concentration rises to 0.4mol/L, the aeration in the main collecting tank is closed, and the main collecting tank is subjected to static precipitation (the static precipitation time is 30-60 minutes), and the bottom layer deposition liquid in the main collecting tank is discharged into the preparation tank. And after the bottom sediment liquid is discharged each time, adding new sewage into the main collecting tank from the daily collecting tank to the raw water level, and simultaneously starting aeration of the main collecting tank to continue the cultivation operation flow. When the operation flow of the supernatant discharge is finished, the time interval from the next time when the nitrite concentration is reduced to 0.02-0.05mol/L is within 12 hours, and the propagation period is ended and the domestication period is started.

Step three, entering an acclimatization period: the amount of sodium acetate which is put in every day at fixed time is reduced until the amount is reduced to 0, and the amount of sodium acetate which is reduced every time is a preset proportion of the amount of the cultivation period. After each reduction in the amount of sodium acetate, 3 cases occur: in case 1, the nitrite concentration in the sewage rises. In case 2, the nitrite concentration in the sewage is leveled. In case 3, the sewage is reduced in nitrite concentration. In case 3, the amount of sodium acetate added is continuously reduced to the next amount. In

cases

1 and 2, the current daily sodium acetate dosage is maintained, and the cultivation period operation is carried out until the nitrite concentration is reduced, and then the next sodium acetate dosage is reduced. And under the condition that the sodium acetate amount is reduced to 0, carrying out the row supernatant operation flow, and finally carrying out the bottom collecting operation flow.

In this embodiment, the preset ratio is 20%, and when the amount of sodium acetate is reduced for the first time, the amount of sodium acetate that is fed in a regular manner every day is reduced to 80% of the amount of the incubation period; after the first sodium acetate amount is reduced to 3 conditions, the sodium acetate amount can be reduced to 60% of the sodium acetate input amount in the case 3; in

cases

1 and 2, the daily sodium acetate dosage of 80% was maintained, and the incubation period was performed until the nitrite concentration was reduced to 60% of the sodium acetate dosage. And the like, the amount of sodium acetate is reduced by 20% of the cultivation period each time until the amount of sodium acetate is reduced to 0. Here, the pH range during the acclimation period is 7.5-8, and when the time interval from the completion of the supernatant operation flow to the next decrease in nitrite concentration to 0.02-0.05mol/L is 12 hours under the condition that the sodium acetate amount is reduced to 0, the acclimation period is ended and the treatment period is entered.

Step four, entering a treatment period: and carrying out the operation flow of the row of the supernatant at regular time every day, and carrying out the operation flow of the bottom collecting and discharging. And when the preparation pool is full, the bottom liquid is subjected to solid-liquid separation through the solid-liquid separation device, the separated liquid is returned to the collecting main pool, and the separated solid is used as plant fertilizer of the culture system.

And fifthly, entering a dormancy period when the temperature is lower than a preset temperature. In this embodiment, the preset temperature is 15 degrees celsius. During the sleep period, the index satisfies: 2 dissolved oxygen, 7.8-8.2 PHs and the temperature is above 8 ℃.

Step six, when the temperature is higher than or reaches the preset temperature, entering a wake-up period: and regulating and controlling the aeration quantity after 1 time of bottom receiving operation flow to increase the dissolved oxygen, and recovering to the treatment period after a preset time. In this example, during the wake-up period, aeration is regulated to increase dissolved oxygen to 5 or more and the treatment period can be restored after 10-20 days.

The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention, but any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. An efficient and automatic sewage suction device for pond engineering circulating water is used for sucking sewage in a sewage collecting area in a pond engineering circulating water culture system, and is characterized by comprising the following components:

at least two water outlet pipes which are arranged in parallel and are fixed on the inner walls of the two opposite sides of the sewage suction cover; each water outlet pipe is provided with a plurality of water outlets which are arranged at equal intervals, and both ends of each water outlet pipe are closed ends;

the controller is used for counting the total number of the energy signals with the signal value lower than a set threshold according to the energy signals of each row of ultraviolet fluorescence sensors, and judging whether the total number is larger than a preset number or not; the controller is also used for judging whether the energy signal of each row of ultraviolet fluorescence sensors is reduced; when the total number is greater than the preset number or the energy signals of each row of ultraviolet fluorescence sensors are reduced, the controller drives the sewage suction pump to move to the outer side of the end part of the corresponding water flow groove through the driving mechanism, drives the sewage suction cover to be arranged on the corresponding water flow groove, drives the sewage suction pump to generate negative pressure in the water flow channel, enables water flow outside the water flow channel to enter the water flow channel through a gap space between the sewage suction cover and the grid, and simultaneously ejects water flow into the water flow channel through the water outlet pipe to lift solid-phase particles in the water flow channel, and finally sucks out the solid-phase particles in the water flow channel through the sewage suction pump, the sewage suction pipe and the sewage suction port.

2. The efficient and automatic sewage suction device for the pond engineering circulating water according to claim 1, wherein the pond engineering circulating water culture system is further provided with a slideway, the driving mechanism is a sliding sewage suction machine, and the sewage suction pump is arranged in the sliding sewage suction machine; the sliding type sewage suction machine is arranged on the slideway and slides along the length direction of the slideway; the slideway is perpendicular to the water flow groove.

3. The efficient automatic sewage suction device for pond engineering circulating water according to claim 1, wherein the water outlets on the two water outlet pipes are arranged in a staggered manner, and the opening angle of each water outlet is 60 degrees.

4. The pond engineering circulating water efficient automatic dirt sucking device of claim 1, wherein the height of the grating/the interval between two adjacent gratings is between 3/10-4/9.

5. The efficient automatic sewage suction device for pond engineering circulating water according to claim 1, wherein the gap of the gap space is 1-2cm, and the distance between two adjacent grids is 1m; the height of the grating is 0.3m, and the width of the grating is 0.053m; the width of the dirt collecting region is 6m.

6. The efficient automatic sewage suction device for pond engineering circulating water according to claim 1, wherein each row of ultraviolet fluorescent sensors is arranged in the middle of the bottom wall of the corresponding water flow groove, and every two ultraviolet fluorescent sensors are in a group; the distance between two adjacent groups of ultraviolet fluorescence sensors is 4.5m, and the distance between two ultraviolet fluorescence sensors in each group of ultraviolet fluorescence sensors is 0.5m.

7. The efficient automatic sewage suction device for pond engineering circulating water according to claim 1, wherein the water outlet is circular and has a diameter of 5mm; the distance between two adjacent water outlets is 10cm, and the distance between two adjacent sewage suction openings is 5m.

8. The pond engineering circulating water efficient automatic sewage suction device of claim 1, wherein the pond engineering circulating water culture system further comprises a waste collection area; the waste collection area is connected with the sewage collection area, and the sewage suction pump sucks the solid-phase particles into the waste collection area through a plurality of sewage suction pipes.

9. The efficient automatic sewage suction device for pond engineering circulating water according to claim 1, wherein the pond engineering circulating water culture system further comprises a front fish blocking grid, a rear fish blocking grid and a plurality of culture runways; the front fish blocking grating is arranged at the same end of the plurality of cultivation runways, and the rear fish blocking grating is arranged at the same other end of the plurality of cultivation runways; the multiple cultivation runways are arranged in parallel, and the same with the other ends of the cultivation runways face the sewage collecting area.

10. The efficient automatic sewage suction device for pond engineering circulating water of claim 8, wherein the pond engineering circulating water culture system further comprises a solid-liquid separation device; the waste collection area comprises a main collection pool, a preparation pool and a daily collection pool; the daily collection pool is used for collecting sewage in the sewage collecting area and conveying the sewage to the collection main pool; a plurality of oxygenation pipes are arranged in the collecting main pool, a bottom water outlet is formed in the bottom and communicated with the preparation pool, and a water outlet at the top of the collecting main pool is provided with an upper water outlet for discharging water to a cultivation area; the solid-liquid separation device is used for sucking sewage in the preparation pool and returning separated liquid waste to the main collection pool.