Filter dam structure for treating aquaculture tail water

Abstract

The utility model discloses a filter dam structure for treating breeding tail water, which comprises a frame, cement piers, filter screens and a filter layer, the cement piers are arranged at two ends of the frame, the frame is fixed on a building surface through the cement piers, the filter screens are arranged on the inner side and the bottom of the frame, the filter layer is arranged in the filter screens, and the frame is integrally welded. The cement piers are built at the two ends of the frame, so that the frame is fixed, the influence of water flow scouring and external force is effectively resisted, and the stability of the filter dam in long-term use is ensured; the filter screen is arranged in the frame and used for bearing the filter layer formed by filling the filter material, so that water flow can be in full contact with the filter layer through the filter screen when passing through the filter screen, pollutants such as suspended solids, organic matters and nitrogen and phosphorus in aquaculture tail water are effectively removed under the action of the filter layer, and water purification is realized; and the filter screen is used for bearing the filter material, so that the filter material is convenient to wash during maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of filter dams, in particular to a filter dam structure for treating aquaculture tail water. Background Art

[0002] Aquaculture tailwater filtration dam is an important part of aquaculture tailwater treatment facilities, mainly used to intercept, precipitate and filter tailwater generated in aquaculture ponds or ditches to reduce pollution to surrounding water bodies. Its filtering principle is usually to fill the dam body with filter materials, and use the filter materials to absorb and degrade suspended matter, organic matter, nitrogen and phosphorus and other pollutants in the tailwater, so as to achieve the purpose of purifying water quality.

[0003] However, since there is usually water in ponds or ditches, it is difficult to construct filter dams directly in ditches. Secondly, some filter dams use wooden structures as frames, which are easily corroded and damaged during long-term use, resulting in reduced stability and durability of the filter dams. Finally, regular cleaning of the filter material of the filter dam is the key to maintaining its filtering effect, but since the filter material is usually immersed in water, the cleaning process is not only difficult but also inefficient. Utility Model Content

[0004] The purpose of the utility model is to provide a filter dam structure for treating aquaculture tail water, so as to solve one or more technical problems existing in the above-mentioned background technology.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A filter dam structure for treating aquaculture tail water comprises a frame, a cement pier, a filter screen and a filter layer. The cement piers are arranged at both ends of the frame, and the frame is fixed on a construction surface through the cement piers. The filter screen is arranged on the inner side and bottom of the frame, and the filter layer is arranged in the filter screen. The frame is made of welded one piece.

[0007] Preferably, the filter layer is formed by filling a filter material, and the filter material is inoculated with high-efficiency denitrifying bacteria.

[0008] Preferably, the filter layer comprises an upper filter layer and a lower filter layer, the upper filter layer and the lower filter layer are arranged one above the other, the lower filter layer is formed by filling crushed stone, fine sand, expanded clay, and volcanic stone, and the upper filter layer is formed by filling filter balls.

[0009] Preferably, grilles are provided on the front and rear surfaces of the frame, and the filter covers the grilles.

[0010] Preferably, the top and bottom of the frame are provided with reinforcing beams, and the reinforcing beams are welded to the front and rear inner sides of the frame.

[0011] Preferably, the frame is made of stainless steel or galvanized steel.

[0012] Preferably, a leveling layer is provided at the bottom of the frame, and the leveling layer is formed by paving crushed stones and coarse sand.

[0013] Preferably, there is a height difference between the surface of the filter layer and the upper edge of the filter screen.

[0014] The beneficial effects of the utility model are as follows: by building cement piers at both ends of the frame, the frame is fixed, the scouring of water flow and the influence of external forces are effectively resisted, and the stability of the filter dam in long-term use is ensured; by arranging a filter screen in the frame to carry the filter layer formed by the filling of the filter material, the water can fully contact the filter layer through the filter screen when passing through, and the suspended matter, organic matter, nitrogen, phosphorus and other pollutants in the aquaculture tail water are effectively removed by the effect of the filter layer, so as to purify the water quality; the filter material is carried by the filter screen, and the flushing of the filter material during maintenance is also convenient; the frame made of one piece of welding can be directly hoisted to the installation position during construction, so as to reduce the construction time and construction difficulty of the filter dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0016] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of one embodiment of the utility model;

[0018] Figure 3 It is a top view of one embodiment of the utility model.

[0019] Among them: frame 1, cement pier 2, filter screen 3, filter layer 4, filter upper layer 41, filter lower layer 42, grille 11, reinforcement beam 12, leveling layer 5. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0021] A filter dam structure for treating aquaculture tail water in this embodiment is shown in the attached Figure 1-3 , including a frame 1, a cement pier 2, a filter screen 3 and a filter layer 4. The cement piers 2 are arranged at both ends of the frame 1. The frame 1 is fixed to the construction surface through the cement piers 2. The filter screen 3 is arranged on the inner side and bottom of the frame 1. The filter layer 4 is arranged in the filter screen 3. The frame 1 is made of welding.

[0022] By building cement piers 2 at both ends of the frame 1, the frame 1 is fixed, effectively resisting the scouring of water flow and the influence of external forces, and ensuring the stability of the filter dam in long-term use; by arranging a filter screen 3 in the frame 1 to carry the filter layer 4 formed by the filling of the filter material, the water can fully contact the filter layer 4 through the filter screen 3 when passing through, and the suspended matter, organic matter, nitrogen, phosphorus and other pollutants in the aquaculture tail water are effectively removed by the effect of the filter layer 4, so as to purify the water quality; the filling height of the filter layer 4 and the type of filter material can also be adjusted according to the actual filtering needs. With the change of the aquaculture scale or the improvement of the water quality treatment requirements, the filter material can be flexibly increased or decreased to meet different treatment requirements; the filter material is carried by the filter screen 3, which is also convenient for flushing the filter material during maintenance; the frame 1 made of welding can be directly hoisted to the installation position during construction, reducing the construction time and construction difficulty of the filter dam.

[0023] Preferably, the filter layer 4 is formed by filling a filter material, and the filter material is inoculated with high-efficiency denitrifying bacteria. By inoculating the filter material with high-efficiency denitrifying bacteria, the denitrifying bacteria use the attachment surface provided by the filter material to form a stable biofilm. In the biofilm, the denitrifying bacteria convert ammonia nitrogen and nitrate nitrogen in the tail water into nitrogen gas through nitrification and denitrification, thereby achieving effective removal of nitrogen, further reducing the pollution of the aquaculture tail water to the environment, and improving the self-purification capacity of the water body.

[0024] Preferably, the filter layer 4 includes an upper filter layer 41 and a lower filter layer 42, which are arranged up and down, and the lower filter layer 42 is formed by filling crushed stone, fine sand, ceramsite, and volcanic stone, and the upper filter layer 41 is formed by filling filter balls. The lower filter layer 42 formed by filter materials with high density such as crushed stone, fine sand, ceramsite, and volcanic stone is provided to physically filter the aquaculture tail water; the upper filter layer 41 formed by filling light filter materials such as filter balls is provided, and the porosity and large surface area of ​​the filter balls are used to provide a good growth environment for microorganisms, and the organic matter, ammonia nitrogen and other soluble pollutants in the water are degraded through biological action.

[0025] Preferably, the front and rear surfaces of the frame 1 are provided with grilles 11, and the filter 3 covers the grilles 11. By welding the grilles 11 on the front and rear surfaces of the frame 1, not only the structural strength of the frame 1 is improved, but also the provision of the grilles 11 facilitates the fixing of the filter 3 to prevent the filter 3 from being deformed.

[0026] Preferably, the top and bottom of the frame 1 are provided with reinforcing beams 12, which are welded to the front and rear inner sides of the frame 1. The provision of the reinforcing beams 12 improves the overall structural strength of the frame 1, avoids vibration and displacement caused by external forces after long-term use, and prolongs the service life of the filter dam.

[0027] Preferably, the frame 1 is made of stainless steel or galvanized steel. The frame 1 made of stainless steel or galvanized steel not only has sufficient structural strength and rigidity and excellent anti-rust performance, which prolongs the service life of the filter dam, but also has good welding performance and reduces the construction difficulty.

[0028] Preferably, a leveling layer 5 is provided at the bottom of the frame 1, and the leveling layer 5 is formed by laying crushed stones and coarse sand. The laying of crushed stones and coarse sand can form a solid and flat foundation on the construction surface, which can disperse the pressure on the frame 1 and the filter layer 4, and reduce the problem of structural damage or poor filtering effect caused by uneven foundation or settlement. In addition, the leveling layer 5 can also play a certain filtering role and can intercept larger particles and impurities.

[0029] Preferably, there is a height difference between the surface of the filter layer 4 and the upper edge of the filter screen 3. That is, the filter screen 3 fixed on the frame 1 is higher than the surface of the filter layer 4, so that during maintenance, the filter material in the filter layer 4 can be directly washed with a high-pressure water gun, which prevents the filter material from being washed away and facilitates washing and maintenance. After cleaning the filter material, the filter material is inoculated with high-concentration and high-efficiency denitrification bacteria again to enhance the tail water treatment effect.

[0030] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A filter dam structure for treating aquaculture tail water, characterized in that: It includes a frame, a cement pier, a filter screen and a filter layer. The cement piers are arranged at both ends of the frame, and the frame is fixed on the construction surface through the cement piers. The filter screen is arranged on the inner side and bottom of the frame, and the filter layer is arranged in the filter screen. The frame is made of welding.

2. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: The filter layer is formed by filling a filter material, and the filter material is inoculated with high-efficiency denitrification bacteria.

3. A filter dam structure for treating aquaculture tail water according to claim 2, characterized in that: The filter layer comprises an upper filter layer and a lower filter layer, the upper filter layer and the lower filter layer are arranged one above the other, and the upper filter layer is formed by filling filter balls.

4. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: The front and rear surfaces of the frame are provided with grilles, and the filter screen covers the grilles.

5. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: The top and bottom of the frame are both provided with reinforcing beams, and the reinforcing beams are welded and connected to the front and rear inner sides of the frame.

6. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: The frame is made of stainless steel or galvanized steel.

7. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: A leveling layer is provided at the bottom of the frame.

8. A filter dam structure for treating aquaculture tail water according to claim 1, characterized in that: There is a height difference between the surface of the filter layer and the upper edge of the filter screen.

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