CN217051958U

CN217051958U - Detachable pressure flow filtering system

Info

Publication number: CN217051958U
Application number: CN202220298531.3U
Authority: CN
Inventors: 陈知雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-26
Anticipated expiration: 2032-02-14

Abstract

The utility model provides a detachable pressure flow filtering system, which relates to the technical field of aquaculture and solves the technical problems that the filtering system has poor filtering effect on harmful substances in water and is difficult to disassemble and assemble; the filtering system comprises a filtering shell, a plant absorption area, a suction device and a digestion drainage component, wherein the suction device and the digestion drainage component are positioned in the filtering shell; when the filter shell is positioned in the culture pond, the suction device is communicated with the culture pond and the digestion drainage assembly; a nitrification filter material is filled in the filter shell; the upper part of the filter shell is provided with a shielding part, the cross sectional area of the shielding part is larger than that of the lower part of the filter shell, the plant absorption area is positioned at the top of the shielding part, and plants are planted on the plant absorption area to absorb nitrate. This filtration system makes things convenient for the dismouting when will filtering the shell and directly support in breeding the pond, and the filter effect is good, and the occlusion part can carry out the shading to the at least lower part of filtering the shell, guarantees that nitrobacteria breeds better in the environment of dark.

Description

Detachable pressure flow filtering system

Technical Field

The utility model belongs to the technical field of the aquaculture technique and specifically relates to a detachable pressure flow filtration system is related to.

Background

In coastal areas, culture ponds are often built on land to breed fish, shrimp and the like. The water needs to be changed after the culture pond is used for a period of time, if the water is not changed timely, excrement discharged by fishes and shrimps and residual bait are accumulated in the water for a long time, a large amount of ammonia salt and nitrite generated by rotting and transformation exceed standards, so that the water quality smells, the fishes and the shrimps die in an emergency, the survival rate of the fishes and the shrimps is low, and economic loss is caused.

Untimely water change in the breed pond can lead to quality of water to foul, the emergent death of fish and shrimp, and need frequently change water in order to guarantee the survival rate of fish and shrimp, and waste water can lead to groundwater to become the salt, the environmental problem such as near soil salinization. In the prior art, in order to reduce the replacement of water in the culture pond and reduce the pollution to the environment, some researchers have adopted to filter harmful substances in the water body by building some filtering devices, such as filtering ponds, in the culture pond. Some of the filter ponds in the prior art are built in a culture pond or beside the culture pond in a concrete mode and the like.

The applicant has found that the prior art has at least the following technical problems:

on the one hand, the filtering device in the prior art can not remove harmful substances in water to a great extent, can not effectively remove nitrate in the water body, and the nitrate is easily reduced into toxic ammonium salt and nitrite again.

On the other hand, the existing filtering device needs a complex pipeline to communicate the filter with the culture pond after being installed in the culture pond, so that the filtering device can only be fixedly installed in a certain culture pond, and is difficult to detach and inconvenient to use once the filtering device is built.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a detachable pressure flow filtering system, which solves the technical problems that the filtering system in the prior art has poor filtering effect on harmful substances in water and is difficult to disassemble and assemble; the utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of detachable pressure flow filtration system, absorb regional and be located including filtering shell, plant filter suction device and digestion drainage subassembly in the shell, wherein:

the bottom of the filter shell is provided with supporting legs for directly supporting the filter shell in the culture pond;

when the filter shell is positioned in the culture pond, the suction device is communicated with the culture pond and the digestion drainage component so as to suck the water-manure mixture in the culture pond into the digestion drainage component; a nitrification filter material is filled in the filter shell, the digestion drainage component can form an anaerobic environment for anaerobic bacteria propagation, a water outlet of the digestion drainage component extends to the bottom of the filter shell, and a mixture flowing out of the water outlet penetrates through the nitrification filter material from bottom to top;

the upper part of the filter shell is provided with a shielding part, the cross sectional area of the shielding part is larger than that of the lower part of the filter shell and is used for shading the lower part of the filter shell, and the plant absorption area is positioned at the top of the shielding part and is planted with plants for absorbing nitrate.

Preferably, the cross-sectional area of the shielding part is gradually reduced from top to bottom, the shielding part is positioned above the culture pond, and the lower part of the filter shell is of an equal-diameter structure.

Preferably, an oxygen increasing device is arranged in the filter shell so as to enable nitrifying bacteria to propagate on the surface of the nitrifying filter material; the oxygenation device is including the aeration head and the connecting air pipe that are linked together, wherein:

the connecting air pipe is communicated with an oxygenation pump, or the connecting air pipe is communicated with the external environment, and the aeration head extends to the bottom of the filter shell and is communicated with the nitrification filter material.

Preferably, be provided with on the surface of water of plant absorption region and plant the kickboard, it runs through to be provided with on the planting kickboard the perforation of planting both sides about the kickboard, the perforation internal fixation has the planting cup, the plant in the planting cup, just the root system of plant can stretch into to absorb nitrate in the regional water of plant absorption.

Preferably, the upper portion of crossing in the filter shell still is provided with out the water subassembly, it includes outlet pipe and overflow regulation cover to go out the water subassembly, wherein:

the water outlet end of the water outlet pipe is communicated with the culture pond, the water inlet end of the water outlet pipe is communicated with the plant absorption area, and the planting floating plate is fixed with the upper end of the water outlet pipe through the overflow adjusting cover; the overflow adjusting cover is provided with an overflow hole, and water in the plant absorption area can enter the water outlet pipe through the overflow hole.

Preferably, an ultraviolet disinfection lamp is arranged in the water outlet pipe.

Preferably, the suction device is communicated with a water inlet of the digestion drainage assembly through a connecting pipe, and a cover body is sleeved outside the suction device and fixed in the filter shell;

the bottom periphery of filtering shell is provided with and is used for preventing the suction portion outside with the aquatic products biology interception, suction device's entry is located prevent inhaling the portion.

Preferably, the digestion drain assembly comprises a digestion bag and an outer sleeve, wherein:

the digestion bag only allows water and water-soluble substances to pass through so that organic matters can be attached to the inner wall of the digestion bag and an anaerobic environment is formed in the digestion bag; more than two digestion bags are communicated with each other to form a digestion string group, and the digestion string group is communicated with the suction device;

the upper end of the outer sleeve is sealed, all the digestion bags are positioned in the outer sleeve, and the water outlet is positioned at the bottom of the outer sleeve.

Preferably, the nitrification filter material comprises a sedimentation flow-equalizing layer positioned at the bottom, the sedimentation flow-equalizing layer is formed by stacking a plurality of nitrification balls, the surfaces of the nitrification balls are of hollow structures, and the water outlet of the digestion drainage component extends to the bottom of the sedimentation flow-equalizing layer.

Preferably, the nitrifying filter material further comprises an upper nitrifying layer, wherein the upper nitrifying layer is located on the upper portion of the sedimentation flow-equalizing layer and is used for stacking materials forming the upper nitrifying layer and the nitrifying balls, and the materials are the same or different.

The utility model provides a detachable pressure stream filtration system compares with prior art, has following beneficial effect: the supporting legs of the bottom of the filter shell directly support the filter shell in the culture pond without concrete laying, the suction device and the digestion drainage assembly are both located in the filter shell, after the filter shell is directly supported in the culture pond, redundant pipelines are not needed to be arranged to communicate the filter system with the water in the culture pond, the filter system is convenient to disassemble and assemble, and the filter device can be conveniently installed in different culture ponds. Water manure mixture in the breed pond is decomposed into nitrate through digestion drainage component, nitration filter media in proper order, and the nitrate in the plant absorption area with the water is got rid of, prevents that the nitrate from being reduced into poisonous ammonia salt, nitrite again. And the shielding part can shield at least the lower part of the filter shell, so that nitrobacteria can be better propagated in a dark environment, and the filtering effect of the filtering system is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall construction of a removable pressure flow filtration system;

in the figure 100, a culture pond; 1. a filter shell; 2. a digestion drainage component; 21. a digestion bag; 22. an outer sleeve; 221. a water outlet; 31. connecting an air pipe; 32. an aeration head; 33. an oxygenation pump; 4. a rain cover; 5. connecting a cover plate; 6. a shielding portion; 71. precipitating a flow-equalizing layer; 72. a nitration layer is formed; 81. planting a floating plate; 82. planting a cup; 91. an overflow adjustment cover; 92. a water outlet pipe; 10. an ultraviolet disinfection lamp; 11. a suction device; 12. a flow regulating valve; 13. a connecting pipe; 14. supporting legs; 15. an anti-suction part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a detachable pressure flow filtration system makes things convenient for the dismouting, and the filter effect is good.

The technical solution provided by the present invention is explained in more detail with reference to fig. 1.

As shown in fig. 1, the present embodiment provides a detachable pressure flow filtration system, which comprises a filter shell 1, a plant absorption area, and a suction device 11 and a digestion drainage assembly 2 which are positioned in the filter shell 1, wherein: the bottom of the filter shell 1 is provided with supporting legs 14 for directly supporting the filter shell 1 in the culture pond 100; when the filter shell 1 is positioned in the culture pond 100, the suction device 11 is communicated with the culture pond 100 and the digestion drainage component 2 so as to suck the water-manure mixture in the culture pond 100 into the digestion drainage component 2; the filter shell 1 is also filled with a nitrification filter material, the digestion drainage component 2 can form an anaerobic environment for anaerobic bacteria propagation, the water outlet 221 of the digestion drainage component extends to the bottom of the filter shell 1, and a mixture flowing out of the water outlet 221 passes through the nitrification filter material from bottom to top and is converted into nitrate by nitrifying bacteria.

The upper part of the filter shell 1 is provided with a shielding part 6, the cross sectional area of the shielding part 6 is larger than that of the lower part of the filter shell 1 and is used for shading the lower part of the filter shell 1, and a plant absorption area is positioned at the top of the shielding part 6 and is planted with plants and vegetables to absorb nitrate.

The detachable pressure flow filtration system of this embodiment, the supporting legs 14 of the bottom of filtering shell 1 will filter shell 1 and directly support in breeding pond 100, need not the concrete and lay, suction device 11 and digestion drainage subassembly 2 all are located filtering shell 1, after will filtering shell 1 and directly support in breeding pond 100, need not to set up the water intercommunication of unnecessary pipeline with filtration system and breeding pond 100 again, this filtration system makes things convenient for the dismouting, can be with convenient the installing in different breeding ponds 100 of filter equipment.

The water manure mixture in the culture pond 100 passes through the digestion drainage component 2 in proper order, the nitration filter media is decomposed into nitrate, concretely, suction device 11 can be the centrifugal pump, suction device 11 pumps the water manure mixture in the culture pond 100 to the digestion drainage component 2 in filtering shell 1, digestion drainage component 2 can block the organic matter inside and form the anaerobic environment that supplies the anaerobe to breed, the anaerobe decomposes the organic matter into inorganic salt, inorganic salt and water flow out from the delivery port 221 of digestion drainage component 2, at this moment, under the drainage effect of digestion drainage component 2 and the power effect of suction device 11, the mixture of water and inorganic salt flows from bottom to top under the pressure effect. In the flowing process, the mixture of water and inorganic salt can fully penetrate through the nitrification filter material filled in the filter shell 1, and the mixture of water and inorganic salt is ensured to be fully contacted with enough nitrification filter material. Under the action of nitrifying bacteria on the surface of the nitrifying filter material, ammonia salt is quickly converted into nitrite, enough nitrifying bacteria decompose the nitrite and convert the nitrite into nitrate, so that the standard exceeding of harmful substances in water is prevented, and the survival rate of fish, shrimps and crabs in the culture pond 100 can be ensured even under the condition of not changing water. The plant absorption area removes the nitrate in the water body, and prevents the nitrate from being reduced into toxic ammonia salt and nitrite again.

The survival of nitrifying bacteria requires several conditions, one of which requires a dark environment; second, sufficient oxygen, third, sufficient surface area of attachments, fourth, sufficient food, such as nitrite; the above conditions are not preferred.

In this detachable pressure flow filtration system: the shielding part 6 can shield at least the lower part of the filter shell 1, so that nitrobacteria can be better propagated in a dark environment, and the filtering effect of the filtering system is improved; the nitrifying filter material provides enough attachment surface area for nitrifying bacteria, and the ammonia salt is quickly converted into nitrite to provide enough food for the nitrifying bacteria.

As an alternative embodiment, referring to fig. 1, the cross-sectional area of the shielding part 6 is gradually reduced from top to bottom, the shielding part 6 is located above the culture pond 100, and the lower part of the filter shell 1 is of an equal-diameter structure.

As shown in fig. 1, the lower part of the filter shell 1 is located in the culture pond 100, and the cross-sectional area of the shielding part 6 is gradually reduced from top to bottom, so that more nitrifying filter materials can be shielded, a dark environment suitable for nitrobacteria to live is provided, the conversion rate from nitrite to nitrate is further increased, harmful substances in a water body are decomposed, and the survival rate of fish, shrimp and crabs is increased.

Nitrifying bacteria are aerobic bacteria, and in order to meet the requirement of the nitrifying bacteria on oxygen, as shown in figure 1, an oxygen increasing device is arranged in the filter shell 1 so that the nitrifying bacteria can be propagated on the surface of the nitrifying filter material; the oxygenation device comprises an aeration head 32 and a connecting air pipe 31 which are communicated with each other, wherein: the connecting air pipe 31 is communicated with an oxygenation pump 33, or the connecting air pipe 31 is communicated with the external environment, oxygen in the external environment can reach the aeration head 32 through the connecting air pipe 31, and the aeration head 32 extends to the bottom of the filter shell 1 and is communicated with the nitrification filter material.

When the connecting air pipe 31 is directly communicated with the external environment, the oxygenation pump 33 is omitted, power is not needed in the natural oxygenation process in the filter shell 1, the oxygenation effect is good, and fresh dissolved oxygen is brought to the fish in the culture pond 100.

Referring to fig. 1, in this embodiment, the connecting air pipe 31 is communicated with an oxygenation pump 33, the oxygenation pump 33 is located in the rain cover 4, and the rain cover 4 is fixed at the top end of the digestion drainage assembly 2. The oxygenation pump 33 can pump oxygen into the connecting air pipe 31 and the aeration head 32, improve the oxygen content in the filter shell 1, and provide sufficient oxygen for nitrobacteria, thereby being beneficial to the propagation of the nitrobacteria.

The present example provides a specific implementation of a plant absorptive region:

referring to fig. 1, as an alternative embodiment, a planting floating plate 81 is arranged on the water surface of the plant absorption area, a perforation penetrating through the upper side and the lower side of the planting floating plate 81 is arranged on the planting floating plate 81, a planting cup 82 is fixed in the perforation, plants are planted in the planting cup 82, and the root systems of the plants can extend into the water body of the plant absorption area to absorb nitrate.

The plants can stretch into the water body of the plant absorption area, continuously take the nitrate as fertilizer to absorb the nitrate in the water body, and when the amount of the plants is enough, the nitrate in the water body can be completely removed, so that the nitrate is prevented from being easily reduced into toxic ammonia salt and nitrite again, and the nitrogen in the water body is thoroughly removed. Preferably, the plants can be algae or vegetables, and the like, and preferably, the vegetables are selected, so that the success rate of the shrimps can be ensured, the vegetables can be obtained in the culture pond 100 under the condition that water is not changed, and the symbiosis of the shrimps and the vegetables is realized.

Organic soil is loaded in the planting cup 82, then vegetable seedlings are planted, and the root systems of the vegetable seedlings can grow out of the planting cup 82 and extend into water, so that nitrate in the water body is absorbed. In the later stage of breeding, the feed feeding amount is increased, the fertility in the water body is also enhanced, and when vegetables on the planting area on the filtering shell 1 are not enough, the number of the planting floating plates 81 can be increased, so that the number of the vegetables is increased, and the nitrate in the water body is further absorbed.

As an optional embodiment, the upper part in the filter shell 1 is further provided with a water outlet assembly, the water outlet assembly comprises a water outlet pipe 92 and an overflow regulating cover 91, wherein: the water outlet end of the water outlet pipe 92 is communicated with the culture pond 100, the water inlet end of the water outlet pipe 92 is communicated with the plant absorption area, and the planting floating plate 81 is fixed with the upper end of the water outlet pipe 92 through an overflow adjusting cover 91; the overflow regulating cover 91 is provided with an overflow hole, and water in the plant absorption area can enter the water outlet pipe 92 through the overflow hole. The water absorbed by the nitrate of the vegetables can flow out of the filter shell 1 through the water outlet pipe 92 and then flow back into the culture pond 100 again, so that the circulation of the water is realized.

The overflow regulating cover 91 is provided with an overflow hole, and water in the plant absorption area can enter the water outlet pipe 92 through the overflow hole. With the structure, the filtered water in the plant absorption area can be ensured to enter the water outlet pipe 92 through the overflow hole between the planting floating plate 81 and the water outlet hole, and then the water flows into the culture pond 100 through the water outlet pipe 92.

As an alternative embodiment, an ultraviolet disinfection lamp is disposed in the outlet pipe 92. The ultraviolet disinfection lamp 10 can further disinfect and sterilize in the water outlet pipe 92.

As an alternative embodiment, referring to fig. 1, the suction device 11 is communicated with the water inlet of the digestion and drainage assembly 2 through a connecting pipe 13, and the connecting pipe 13 is provided with a flow regulating valve 12 for regulating the water flow; a cover body is sleeved outside the suction device 11 and is fixed in the filter shell 1; the periphery of the bottom of the filter shell 1 is provided with an anti-suction part 15 for intercepting aquatic organisms outside, and the inlet of the suction device 11 is positioned in the anti-suction part 15.

Wherein, the anti-suction part 15 can be an anti-suction net structure, the aperture on the anti-suction net allows the water-manure mixture to pass through and blocks the fish, the shrimp and the crab outside, and prevents the fish, the shrimp and the crab from being sucked into the filter shell 1.

The suction device 11 can be a centrifugal pump, the centrifugal pump is fixed in the cover body, the bottom of the cover body is communicated with the culture pond 100 through an anti-suction net, when the suction device is used, the filter system is directly placed in the culture pond 100, a pipeline does not need to be laid, and the suction device is convenient to disassemble, assemble and use.

As an alternative embodiment, referring to fig. 1, the digestion drain assembly 2 comprises a digestion bag 21 and an outer sleeve 22, wherein: the digestion bag 21 allows only water and water-soluble substances to pass through so that organic matter can be attached to the inner wall of the digestion bag 21 and an oxygen-free environment is formed inside the digestion bag 21; more than two digestion bags 21 are communicated and form a digestion string group which is communicated with the suction device 11; the upper end of the outer sleeve 22 is sealed by a connecting cover plate 5, all the digestion bags 21 are positioned in the outer sleeve 22, and the water outlet 221 is positioned at the bottom of the outer sleeve 22.

The digestion bag 21 can be made of non-woven fabrics or materials with water resistance and water permeability, and can be large or small, preferably 18-20cm in diameter and 70-80cm in length, and the water-through micropores on the digestion bag have a good effect of being between 100 meshes and 150 meshes, only allow water and water-soluble substances (inorganic salts, such as ammonia salts) to pass through and block organic matters in the digestion bag 21. The digestion bag 21 functions as: the water entering the digestion bag 21 flows out of the bag, and the excrement residual bait and various organic matters are blocked in the digestion bag 21, the organic matters are fixed on the inner wall of the bag, and the organic matters are continuously thickened on the inner wall of the digestion bag 21 due to the continuous passing of the water flow, so that a breeding hotbed is brought to anaerobic bacteria, and the anaerobic bacteria breeding and spreading are active in the closed anoxic environment of the digestion bag 21. The anaerobic bacteria decompose the organic substances brought by the daily water flow into inorganic salts (ammonia salts) in the digestion bag 21, and water and inorganic substances flow out of the digestion bag 21. Thus, as long as the temperature is appropriate, the digestion bag 21 will never overflow to cause blockage, which is the process of separating and decomposing organic matters by anaerobic bacteria, and the organic matters are decomposed into inorganic salts (ammonium salts) by the anaerobic bacteria.

To further the flow of the mixture of water and inorganic salts from the bottom up, see figure 1, the outer jacket 22 passes through the digestion filter and is vertically disposed with the upper end of the outer jacket 22 sealed to prevent the flow of water and inorganic salts out the upper end of the outer jacket 22. Because the outer sleeve 22 passes through the digestion filter material and the water outlet 221 is positioned at the bottom of the outer sleeve 22, the mixture of the water and the inorganic salt flowing out of the digestion bag 21 flows out through the water outlet 221 at the bottom of the outer sleeve 22 under the drainage effect of the outer sleeve 22. After the mixture of water and inorganic salt (ammonia salt) flows out of the outer sleeve 22, the mixture is positioned at the bottommost part of the nitrifying filter material, and the ammonia salt is quickly converted into nitrite under the action of nitrifying bacteria on the surface of the nitrifying filter material. Under the action of water pressure, a mixture of water and nitrite flows from bottom to top and passes through the nitrifying filter material filled in the filter shell 1, a film of nitrifying bacteria is generated on the surface of the nitrifying filter material, the nitrite is a food carbon source of the nitrifying bacteria, and enough nitrifying bacteria decompose the nitrite and convert the nitrite into nitrate. The water with ammonia salt flowing out from the outer sleeve 22 is changed into water with nitrate through nitrification, which is the nitrification function of the nitrification filter material for eliminating bacteria.

In order to increase the filtering effect of the digestion drain assembly 2, the upper end of the digestion drain assembly 2 is higher than the filter housing 1, see fig. 1, to increase the travel of the water-manure mixture through the digestion drain assembly 2.

As an optional embodiment, referring to fig. 1, the nitrification filter includes a sedimentation flow-equalizing layer 71 located at the bottom, the sedimentation flow-equalizing layer 71 is formed by stacking a plurality of nitrification balls, the surfaces of the nitrification balls are hollow structures, and the water outlet 221 of the digestion drainage component 2 extends to the bottom of the sedimentation flow-equalizing layer. Referring to fig. 1, the nitrification filter further comprises an upper nitrification layer 72, wherein the upper nitrification layer 72 is positioned above the sedimentation flow-equalizing layer 71, and the material for stacking the upper nitrification layer 72 is the same as or different from the nitrification balls.

The structure of the sedimentation flow-equalizing layer 71 formed by stacking the nitrification balls is at least positioned at the bottom of the filter shell 1, so that on one hand, the resistance of the mixture of water and ammonia salt flowing out of the outer sleeve can be reduced, and the mixture of water and ammonia salt can smoothly flow from bottom to top under the action of pressure. On the other hand, the structure of the nitrification ball can greatly improve the contact area between the nitrification ball and the ammonia salt, and ensure that the digestive bacteria can better hang a membrane on the surface of the nitrification ball, so that the ammonia salt is fully converted into the nontoxic nitrate under the action of enough nitrifying bacteria, and the nitrification layer 72 comprises the nitrification ball, a special brush, shells, ores and the like. For cost saving, it is preferable that the upper nitrification layer 72 include shells, volcanic rocks, or mineralized rocks, etc. The material selection of the upper nitrification layer 72 can reduce the cost of the nitrification filter material and ensure that the mixture of water and ammonia salt and nitrite smoothly flows upwards. When the mixture passes through the sedimentation flow-equalizing layer 71 and the upper nitrification layer 72, nitrifying bacteria can grow on the surfaces of the nitrification ball, the special brush, the shell, the ore and the like because the nitrifying bacteria are food carbon sources of the nitrifying bacteria, and sufficient nitrifying bacteria convert the nitrites into the nitrates.

The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A detachable pressure flow filtration system comprising a filter housing, a plant uptake area, and a suction device and a digestion drain assembly located within the filter housing, wherein:

when the filter shell is positioned in the culture pond, the suction device is communicated with the culture pond and the digestion drainage assembly so as to suck the water-manure mixture in the culture pond into the digestion drainage assembly; a nitrification filter material is filled in the filter shell, the digestion drainage component can form an anaerobic environment for anaerobic bacteria propagation, a water outlet of the digestion drainage component extends to the bottom of the filter shell, and a mixture flowing out of the water outlet penetrates through the nitrification filter material from bottom to top;

the upper part of the filter shell is provided with a shielding part, the cross sectional area of the shielding part is larger than that of the lower part of the filter shell and is used for shading the lower part of the filter shell, and the plant absorption area is positioned at the top of the shielding part and is planted with plants to absorb nitrate.

2. The removable pressure flow filtration system of claim 1, wherein the cross-sectional area of the shielding portion is gradually reduced from top to bottom, the shielding portion is located above the culture pond, and the lower portion of the filter shell is of an equal-diameter structure.

3. The detachable pressure-flow filter system as claimed in claim 1, wherein an oxygen increasing device is arranged in the filter shell to enable nitrifying bacteria to breed on the surface of the nitrifying filter material; the oxygenation device is including the aeration head and the connecting air pipe that are linked together, wherein:

4. The detachable pressure flow filtering system of claim 1, wherein a planting floating plate is arranged on the water surface of the plant absorption area, a through hole penetrating through the upper side and the lower side of the planting floating plate is arranged on the planting floating plate, a planting cup is fixed in the through hole, the plant is planted in the planting cup, and the root system of the plant can extend into the water body of the plant absorption area to absorb nitrate.

5. The removable pressure flow filtration system of claim 4, wherein a water outlet assembly is further provided at an upper portion of the inside of the filter housing, the water outlet assembly comprising a water outlet pipe and an overflow regulating cover, wherein:

the water outlet end of the water outlet pipe is communicated with the culture pond, the water inlet end of the water outlet pipe is communicated with the plant absorption area, and the planting floating plate is fixed with the upper end of the water outlet pipe through the overflow adjusting cover; an overflow hole is formed in the overflow adjusting cover, and water in the plant absorption area can enter the water outlet pipe through the overflow hole.

6. The removable pressure flow filtration system of claim 5 wherein an ultraviolet disinfection lamp is disposed within the outlet pipe.

7. The removable pressure-flow filtration system according to claim 1, wherein the suction device is in communication with the water inlet of the digestion and drainage assembly through a connection pipe, and a cover body is sleeved outside the suction device and fixed inside the filter shell;

8. The removable pressure-flow filtration system of claim 1, wherein the digestion drain assembly comprises a digestion bag and an outer sleeve, wherein:

9. The detachable pressure flow filter system as claimed in claim 1 or 3, wherein the nitrification filter comprises a sedimentation flow equalizing layer at the bottom, the sedimentation flow equalizing layer is formed by stacking a plurality of nitrification balls, the surface of the nitrification ball is of a hollow structure, and the water outlet of the digestion drainage component extends to the bottom of the sedimentation flow equalizing layer.

10. The detachable pressure flow filter system according to claim 9, wherein the nitrification filter further comprises an upper nitrification layer, the upper nitrification layer is located above the sedimentation flow equalization layer, and the material for stacking the upper nitrification layer is the same as or different from the nitrification ball.