Ecological filter dam suitable for tail water of aquaculture pond
By designing a multi-layer filler area and filtering net ecological filter dam in the tail water treatment of aquaculture ponds, and using biobraid belt fillers and different particle fillers for physical and chemical reactions, the traditional method cannot effectively remove pollutants of aquaculture ponds. The problem has significantly improved the health of water quality and water ecosystems.
Patent Information
- Application Number
- CN202421064037.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-15
AI Technical Summary
Traditional aquaculture pond tail water treatment methods cannot effectively remove pollutants such as ammonia nitrogen, nitrites, organic matter, phosphorus and pollutants, resulting in serious water pollution and affecting the health of aquatic animals and the quality of breeding products.
An ecological filter dam was designed, including multiple filler areas and filter mesh. The microbial membrane is used to form microbial membranes to adsorb and decompose organic matter, and the physical and chemical reactions are carried out in combination with different particle filler areas. The filling is extended through backflush cleaning and sludge collection pipelines. Use period to reduce the content of pollutants in the water.
It significantly reduces the content of pollutants such as ammonia nitrogen and total phosphorus in the tail water, improves the water quality, extends the service life of the filler, improves the self-purification capacity of the water body, and repairs the water ecosystem.
Smart Images
Figure CN222250351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tail water pollution control in aquaculture ponds, in particular to an ecological water filtering dam suitable for tail water in aquaculture ponds. Background Art
[0002] In my country, high-density pond farming is a common farming model. However, traditional farming methods result in a large amount of residual bait and feces being discharged into the water, making the problem of aquaculture tailwater pollution increasingly serious. These tailwaters mainly contain pollutants such as ammonia nitrogen, nitrite, organic matter, phosphorus and fouling organisms. If the tailwater is not treated in a timely and effective manner, it will not only deteriorate the environment of the aquaculture waters, but may also cause outbreaks of diseases in aquatic animals such as fish, shrimps and crabs, and even cause large-scale deaths, thus seriously affecting the quality and output of aquaculture products.
[0003] At present, common tailwater treatment methods include using the water body's own static separation to filter out impurities, or combining green plants to purify the water body. However, the purification effect of these methods is not ideal, and the content of various elements in the treated and discharged water is still high. Utility Model Content
[0004] The utility model aims to provide an ecological water filter dam suitable for tail water of aquaculture ponds to solve the above problems.
[0005] According to one aspect of the utility model, an ecological water filter dam suitable for tail water of aquaculture ponds is provided, comprising: a first support body and a dam body, a second support body is arranged between the dam body and the first support body, a water inlet is arranged on the front side of the dam body, a water outlet is arranged on the rear side of the dam body, the second support body divides the dam body into a first filling area, a second filling area, a third filling area and a fourth filling area, the first filling area is connected with the second filling area through a first water outlet, the second filling area is connected with the third filling area through a second water outlet, the third filling area is connected with the fourth filling area through a third water outlet, the second water outlet is detachably connected with a filter screen, a backwash cleaning pipe is arranged in the dam body, a sludge collection pipe is arranged between the second support body and the dam body, and the tail water of the aquaculture pond is discharged after passing through the water inlet, the first filling area, the first water outlet, the second filling area, the second water outlet, the third filling area, the third water outlet, the fourth filling area and the water outlet in sequence.
[0006] In some embodiments, the water inlet is inclined, the inclination angle of the water inlet is between 25° and 35°, and the water inlet is provided with a first baffle; the water outlet is mirror-imaged to the water inlet, and the water outlet is provided with a second baffle.
[0007] In some embodiments, the first support body includes a cushion layer and a plurality of pine wood piles, wherein the plurality of pine wood piles are vertically arranged on the bottom surface of the cushion layer, and the bottom ends of the pine wood piles are in a pointed cone shape.
[0008] In some embodiments, the depth of the pine wood piles inserted into the mud bottom layer is greater than 2.5 m; and the distance between each of the pine wood piles is 75 to 100 cm.
[0009] In some embodiments, the particle radius of the filler in the first filler zone and the third filler zone gradually increases from the bottom layer to the top layer; and the particle radius of the filler in the fourth filler zone gradually decreases from the bottom layer to the top layer.
[0010] In some embodiments, the second support body is a reinforced concrete structure; and metal filter grids are disposed at the bottoms of the first filling area, the second filling area, the third filling area, and the fourth filling area.
[0011] In some embodiments, the pore size of the metal filter grid is less than 6 mm.
[0012] In some embodiments, the apertures of the first retaining net and the second retaining net are less than 6 mm.
[0013] In some embodiments, the filler in the first filler zone is zeolite; the filler in the second filler zone is biological braided filler; the filler in the third filler zone is pebbles; and the filler in the fourth filler zone is expanded clay.
[0014] In some embodiments, the second water outlet is provided with a supporting frame for mounting the filter screen.
[0015] Compared with the prior art, the beneficial effects of this application are:
[0016] When aquaculture tail water passes through this application, the microbial film formed by the biological braided filler arranged in the second filler area can adsorb and decompose organic matter in the water and reduce the content of pollutants such as ammonia nitrogen and total phosphorus, so that the turbidity of the water after passing through the filter dam is reduced, and the water quality indicators are improved; the filter medium is formed by the first filler area, the third filler area and the fourth filler area to intercept the suspended matter in the water, and carry out physical and chemical reactions such as adsorption, filtration, complexation reaction, ion exchange, etc., to continuously remove various pollutants in the water body; the large particles of suspended matter attached to the filler can be regularly cleaned through the internal backwash pipe, and combined with the sludge collection pipe at the bottom, the service life of the filler can be extended; the suspended matter, COD, TN, TP and other pollutants in the water are reduced, the self-purification capacity of the water body is improved, and the water ecosystem is repaired. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the flow direction of the pond tail water of the utility model. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] refer to Figure 1 to Figure 2 The present application provides an ecological water filter dam suitable for tail water of aquaculture ponds, comprising: a first support body and a dam body, a second support body 1 is arranged between the dam body and the first support body, a water inlet 2 is arranged on the front side of the dam body, a water outlet 3 is arranged on the rear side of the dam body, the second support body 1 divides the dam body into a first filling area 4, a second filling area 5, a third filling area 6 and a fourth filling area 7, the first filling area 4 is connected with the second filling area 5 through a first water outlet 8, the second filling area 5 is connected with the third filling area 6 through a second water outlet 9, the third filling area 6 is connected with the fourth filling area 7 through a third water outlet 10, the second water outlet 9 is detachably connected with a filter screen, a backwash cleaning pipe is arranged in the dam body, a sludge collection pipe is arranged between the second support body 1 and the dam body, and the tail water of the aquaculture pond is discharged after passing through the water inlet 2, the first filling area 4, the first water outlet 8, the second filling area 5, the second water outlet 9, the third filling area 6, the third water outlet 10, the fourth filling area 7 and the water outlet 3 in sequence.
[0021] The water inlet 2 is inclined, and the inclination angle of the water inlet 2 is between 25° and 35°. The water inlet 2 is provided with a first retaining net; the water outlet 3 is mirror-set to the water inlet 2, and the water outlet 3 is provided with a second retaining net. The first retaining net and the second retaining net are fixed to the dam body through a 45-degree rotating hinge.
[0022] The first support body includes a cushion layer 11 and a plurality of pine piles 12, wherein the plurality of pine piles 12 are vertically arranged on the bottom surface of the cushion layer 11, and the bottom ends of the pine piles 12 are in a pointed cone shape; the depth of the pine piles 12 inserted into the mud bottom layer is greater than 2.5 m; the distance between each pine pile 12 is 75 to 100 cm, and the pine piles 12 are evenly spaced. The pine piles 12 are 3 m long and 150 ± 30 mm in diameter, and one end is cut into a pointed cone shape. The top width of the dam body is generally about 2 m, and the specific spacing between the pine piles 12 can be adjusted depending on the dam body.
[0023] The particle radius of the fillers in the first filler area 4 and the third filler area 6 gradually increases from the bottom to the top, the bottom filler particle size is 10-20mm; the middle filler particle size is 20-40mm; the top filler particle size is 30-50mm. By arranging filter fillers with different pore sizes in layers, the removal effect of suspended matter in the tail water is improved, and a stable attachment surface is provided for the growth of microorganisms. When the polluted water flows through the filter filler, physical and chemical reactions such as adsorption, filtration, complexation reaction, and ion exchange will occur, and various pollutants in the water will be continuously removed; the fourth The particle radius of the filler in the filler area 7 gradually decreases from the bottom to the top, and the bottom filling particle size is 30-50mm; the middle filling particle size is 20-40mm, and the top filling particle size is 10-20mm. The zeolite layer with a height of 400mm improves the removal effect of suspended matter in the tail water by arranging filter fillers with different pore sizes in layers, providing a stable attachment surface for the growth of microorganisms. When the polluted water flows through the filter filler, physical and chemical reactions such as adsorption, filtration, complexation reaction, and ion exchange will occur, and various pollutants in the water will be continuously removed.
[0024] The second support body 1 is a reinforced concrete structure; the bottoms of the first filling area 4, the second filling area 5, the third filling area 6 and the fourth filling area 7 are all provided with metal filtering grids.
[0025] The pore size of the metal filter grid is less than 6 mm.
[0026] The apertures of the first retaining net and the second retaining net are less than 6 mm.
[0027] The filler in the first filler area 4 is zeolite; the filler in the second filler area 5 is biological braided filler; the filler in the third filler area 6 is pebbles; the filler in the fourth filler area 7 is ceramsite. The biological braided filler is a 1000x1000x700mm frame braided filler combination device, which uses microorganisms to degrade pollutants in the tail water, which is conducive to the attachment and growth of bacteria and microorganisms on the biological braided filler, and the formed biofilm continuously purifies the water body. Through the physical filtration-biological purification combined treatment technology, it can achieve complementary advantages and enhance the treatment effect of polluted water bodies.
[0028] The second water outlet 9 is provided with a supporting frame for installing the filter screen.
[0029] The various filling areas in the main body of the dam can be replaced according to the degree of turbidity of the water body, the type and content of pollutants in the water. The optional alternative materials include but are not limited to volcanic rock, coal slag, coke, quartz sand, activated carbon, etc.
[0030] The backwash pipe in the present application can backwash and clean each filling area in the dam body by injecting high-pressure water; the sludge collection pipe can regularly absorb the sludge in the second support body 1 through a water pump or the like.
[0031] The specific direction of the pond tail water flowing through this application is as follows: the pond tail water flows from the dam body through the first retaining net and the water inlet 2 into the first filling area 4, flows from top to bottom into the second support body 1 below and flows into the second filling area 5 through the first water outlet 8, and then from bottom to top through the second water outlet 9 and the filter net into the third filling area 6, and then flows from top to bottom into the second support body 1 below and flows into the fourth filling area 7 through the third water outlet 10, and finally is discharged from bottom to top through the second retaining net and the water outlet 3.
[0032] When aquaculture tail water passes through this application, the microbial film formed by the biological braided filler arranged in the second filler area 5 can adsorb and decompose organic matter in the water and reduce the content of pollutants such as ammonia nitrogen and total phosphorus, so that the turbidity of the water after passing through the filter dam is reduced, and the water quality index is improved; the filter medium is formed by the first filler area 4, the third filler area 6 and the fourth filler area 7 to intercept the suspended matter in the water, and carry out physical and chemical reactions such as adsorption, filtration, complexation reaction, ion exchange, etc., to continuously remove various pollutants in the water body; the large particles of suspended matter attached to the filler can be regularly cleaned through the internal backwash pipe, and combined with the sludge collection pipe at the bottom, the service life of the filler can be extended; the suspended matter, COD, TN, TP and other pollutants in the water are reduced, the self-purification ability of the water body is improved, and the water ecosystem is repaired.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An ecological water filter dam suitable for tail water of aquaculture ponds, characterized in that: include: A first support body and a dam body, a second support body is arranged between the dam body and the first support body, a water inlet is arranged on the front side of the dam body, a water outlet is arranged on the rear side of the dam body, the second support body divides the dam body into a first filling area, a second filling area, a third filling area and a fourth filling area, the first filling area is connected with the second filling area through a first water outlet, the second filling area is connected with the third filling area through a second water outlet, the third filling area is connected with the fourth filling area through a third water outlet, the second water outlet is detachably connected with a filter screen, a backwash cleaning pipe is arranged in the dam body, a sludge collection pipe is arranged between the second support body and the dam body, and the tail water of the breeding pond is discharged after passing through the water inlet, the first filling area, the first water outlet, the second filling area, the second water outlet, the third filling area, the third water outlet, the fourth filling area and the water outlet in sequence.
2. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 1, characterized in that: The water inlet is arranged in an inclined manner, the inclination angle of the water inlet is between 25° and 35°, and the water inlet is provided with a first retaining net; the water outlet is arranged in a mirror image with the water inlet, and the water outlet is provided with a second retaining net.
3. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 1, characterized in that: The first support body includes a cushion layer and a plurality of pine wood piles. The plurality of pine wood piles are vertically arranged on the bottom surface of the cushion layer, and the bottom ends of the pine wood piles are in a pointed cone shape.
4. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 3, characterized in that: The depth of the pine wood piles inserted into the mud bottom layer is greater than 2.5m; the distance between each of the pine wood piles is 75-100cm.
5. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 1, characterized in that: The particle radius of the filler in the first filler area and the third filler area gradually increases from the bottom layer to the top layer; the particle radius of the filler in the fourth filler area gradually decreases from the bottom layer to the top layer.
6. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 1, characterized in that: The second support body is a reinforced concrete structure; the bottoms of the first filling area, the second filling area, the third filling area and the fourth filling area are all provided with metal filter grids.
7. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 6, characterized in that: The pore size of the metal filter grid is less than 6 mm.
8. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 2, characterized in that: The apertures of the first retaining net and the second retaining net are less than 6 mm.
9. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 5, characterized in that: The filler in the first filler area is zeolite; the filler in the second filler area is biological braided filler; the filler in the third filler area is pebbles; and the filler in the fourth filler area is ceramsite.
10. The ecological water filter dam suitable for tail water of aquaculture ponds according to claim 1, characterized in that: The second water outlet is provided with a supporting frame for installing the filter screen.