Washable three-dimensional tail water filtering device suitable for higher-place pond culture

Abstract

The invention discloses a washable three-dimensional tail water filtering device suitable for higher-place pond culture, and belongs to the technical field of aquaculture tail water purification, the washable three-dimensional tail water filtering device comprises a filtering and purifying barrel and a water storage barrel which are integrally arranged, the filtering and purifying barrel and the water storage barrel are separated through a latticed wafer, and the filtering and purifying barrel is filled with a combined water purification material; the filtering and purifying barrel and the water storage barrel are obliquely placed above the high-position culture pond through a support, the low position of the filtering and purifying barrel is connected with a water inlet pipe, and the high position of the water storage barrel is connected with a water outlet pipe; an engine is fixed in the water storage barrel and is connected with a brush extending into the filtering and purifying barrel; the bottom of the water inlet pipe is connected with a water inlet hose. The device has the advantages of high water purification efficiency, easiness in cleaning and maintenance, small occupied area and the like.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture tail water purification, and in particular to a washable three-dimensional tail water filtering device suitable for high-position pond aquaculture. Background Art

[0002] Under the high-density breeding model in high-level ponds, various pollutants such as nitrogen and phosphorus are enriched in the breeding water, which has a serious impact on the development of the aquaculture industry itself and the protection of the surrounding natural ecological environment. At present, the main technologies for treating aquaculture tailwater include chemical treatment technology, biological treatment technology and physical treatment technology. Chemical treatment technology is prone to produce harmful substances due to the need to add chemical reagents; the application of biological treatment technology in the treatment of aquaculture tailwater is mainly based on the planting of aquatic plants. This technology is easily restricted by various restrictions such as plant growth cycle and site, and the operating cost is also high; physical treatment technology is mainly divided into mechanical filtration, foam separation technology, and membrane separation technology. Among them, foam separation technology is not applicable to freshwater aquaculture tailwater, and membrane separation technology has a high cost. These two technologies cannot be effectively and widely used in the treatment of aquaculture tailwater.

[0003] Mechanical filtration is simple, practical, and time-saving, and is considered to be the most economical and effective means of primary treatment. However, due to the short hydraulic retention time and poor characteristics of water purification materials, general mechanical filtration has problems such as unsatisfactory purification effects, easy clogging, and affects purification efficiency. Water purification materials need to be replaced regularly and cannot be cleaned and reused, resulting in high purification costs. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of unsatisfactory mechanical filtration purification effect, high purification efficiency and low cost, and to provide a washable three-dimensional tail water filtering device suitable for high-position pond aquaculture.

[0005] The technical problem to be solved by the present invention can be implemented through the following technical solutions.

[0006] A washable three-dimensional tailwater filtering device suitable for high-position aquaculture, comprising an integrally arranged filter purification barrel and a water storage barrel, the filter purification barrel and the water storage barrel being separated by a grid-shaped disc, and the filter purification barrel being filled with a combined water purification material; the filter purification barrel and the water storage barrel being tiltedly placed above the high-position aquaculture pond through a bracket, the filter purification barrel being connected to a water inlet pipe at a low position, and the water storage barrel being connected to a water outlet pipe at a high position; an engine being fixed in the filter purification barrel and the water storage barrel, and the engine being connected to a brush extending into the filter purification barrel; the water inlet pipe being connected to a water inlet hose via a water pump at the bottom of the high-position aquaculture pond; a confluence-type three-way valve 1 being provided in the middle section of the water inlet pipe, a lower end of the confluence-type three-way valve being used for aquaculture tailwater inflow, and a side end of the confluence-type three-way valve being used for a water inflow cleaning device; a diversion-type three-way valve 2 being provided in the middle section of the water outlet pipe, a lower end of the diversion-type three-way valve 2 being used for purified aquaculture tailwater to flow back to the high-position aquaculture pond (13), and a side end of the diversion-type three-way valve 2 being used for sewage discharge.

[0007] In the above technical solution, preferably, a stainless steel ring is provided at the end of the water inlet hose for counterweight; and a stainless steel net is installed at the end of the water inlet hose.

[0008] In the above technical solution, preferably, the filling volume of the combined water purification material does not exceed 2 / 3 of the volume of the filter purification barrel; the combined water purification material is composed of biological beads and bacterial rings in a 1:1 configuration, and its individual diameter or length is not less than 2 cm.

[0009] In the above technical solution, preferably, the integrated filter purification barrel and water storage barrel form an angle of 20 degrees with the ground.

[0010] In the above technical solution, preferably, the outer layer of the engine is provided with a waterproof coating.

[0011] In the above technical solution, preferably, the material of the grid-shaped disc is stainless steel, and the grid side length of the grid-shaped disc is 1 cm.

[0012] The beneficial effects of the present invention are: 1. The present invention places the device body at an angle, with the water inlet at the first position and the water outlet at a high position. The gravity difference between the water inlet and the water outlet can extend the hydraulic retention time of the aquaculture tail water, so that the aquaculture tail water can be fully contacted with the combined water purification material, thereby optimizing the water purification effect.

[0013] 2. The present invention is provided with an engine, and the brush can be driven to rotate by turning on the engine. Regular cleaning and maintenance of the device can be achieved without replacing the water purification material, thereby reducing costs and avoiding clogging inside the device that affects the water purification efficiency.

[0014] 3. The present invention uses a bracket to place the device body above the high-position breeding pond to form a three-dimensional structure with it, without occupying additional land area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0016] Explanation of the markings in the attached drawings: 1. Filter purification barrel, 2. Water storage barrel, 3. Brush, 4. Combined water purification material, 5. Engine, 6. Water inlet pipe, 7. Converging three-way valve 1, 8. Water outlet pipe, 9. Diverting three-way valve 2, 10. Bracket, 11. Water pump, 12. Water inlet hose, 13. High-level breeding pond. Implementation

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] like Figure 1 As shown, the present invention discloses a washable three-dimensional tailwater filtering device suitable for high-position pond aquaculture, and the device body comprises a filtering and purifying barrel 1, a water storage barrel 2 and a brush 3. The filtering and purifying barrel 1 is used to treat aquaculture tailwater, and the water storage barrel 2 is used to receive the purified aquaculture tailwater.

[0019] The filter purification barrel 1 and the water storage barrel 2 are integrated and separated by a grid-shaped disc. The grid-shaped disc is made of stainless steel, and the grid side length of the grid-shaped disc is 1 cm. The filter purification barrel 1 is filled with a combined water purification material 4, and the filling volume of the combined water purification material 4 does not exceed 2 / 3 of the volume of the filter purification barrel 1. The combined water purification material 4 is composed of biological beads and bacterial rings in a 1:1 configuration, and its individual diameter or length is not less than 2 cm. The grid-shaped disc can retain the biological beads and bacterial rings in the filter purification barrel 1. The surface of the bacterial ring and the biological beads has a porous structure and a large surface area, and the combination of the two materials in a 1:1 ratio can have a synergistic purification effect on various pollutants such as total nitrogen, total phosphorus, ammonia nitrogen, and suspended solids.

[0020] The grid-shaped disc is fixed with an engine 5, which is connected to the brush 3. The brush 3 is a steel wire brush, and the outside of the engine 5 is coated with a waterproof coating. When the engine 5 is not started, the brush 3 is stationary, playing the role of filtering impurities; when the engine 5 is started, the brush 3 is driven to rotate, and the steel wire is brought into contact with the biological beads and the bacterial rings through the rotation of the brush 3, and impurities on the surface of the water purification material can be removed under the action of friction. The engine 5 can be started regularly as needed to clean and maintain the filter device, saving the cost of replacing the water purification material.

[0021] The whole formed by the filter purification barrel 1 and the water storage barrel 2 is tilted and placed above the high-position breeding pool 13 through the bracket 10, so that the filter device and the high-position breeding pool 13 form a three-dimensional structure without occupying additional land area. The angle between the filter purification barrel 1 and the water storage barrel 2 and the ground is 20 degrees. The filter purification barrel 1 is inlet at the low end and outlet at the high end. The gravity difference between the inlet and outlet water can extend the hydraulic retention time of the breeding tail water, so that the bacterial ring and the biological beads are in full contact with the breeding tail water, further improving the water purification efficiency.

[0022] The end of the filter purification barrel 1 at a low position is connected to the water inlet pipe 6, and the water inlet pipe 6 extends into the water of the high-position breeding pool 13. The end is connected to the water inlet hose 12 through the pump 11, and the pump 11 is located at the bottom of the high-position breeding pool 13. A stainless steel ring is provided at the end of the water inlet hose 12 for counterweighting, so that the water inlet hose 12 is always at the bottom of the high-position breeding pool 13. A stainless steel net is installed at the end of the water inlet hose 12 to prevent the entry of cultured organisms. A confluence type three-way valve 7 is provided in the middle section of the water inlet pipe 6, and the lower end of the confluence type three-way valve 7 is used for the inflow of breeding tail water, and the side end of the confluence type three-way valve 7 is used to connect an external water pipe. The end of the water storage barrel 2 at a high position is connected to the outlet pipe 8, and the end of the outlet pipe 8 is aligned with the high-position breeding pool 13. A diverter type three-way valve 2 9 is provided in the middle section of the outlet pipe 8, the lower end of the diverter type three-way valve 2 9 is used for returning the purified aquaculture tail water to the high-level pool 13, and the side end of the diverter type three-way valve 2 9 is used for connecting an external water pipe.

[0023] The water is pumped by the pump 11, so that the aquaculture tail water enters the filter purification barrel 1 filled with the combined water purification material 4 from the water inlet pipe 6. After a period of stay, the purified aquaculture tail water can flow back to the high-position aquaculture pond 13 through the outlet pipe 8, so as to achieve the purification and recycling of aquaculture tail water. When the filter device needs to be cleaned and maintained, the side end of the confluence three-way valve 17 is connected to the external tap water, and the side end of the diversion three-way valve 29 is connected to the external sewage collection device. Start the engine 5, the tap water enters the filter purification barrel 1 through the side end of the confluence three-way valve 17, and the brush 3 is rotated to clean, and the cleaned sewage is discharged to the external sewage collection device through the side end of the diversion three-way valve 29.

[0024] According to the embodiment of the present invention, a three-dimensional tailwater filter suitable for high-position aquaculture was established in the ecological room laboratory of the Freshwater Fisheries Research Center, and the water purification effect was verified by experiments. The high-position aquaculture pool is a 96L glass tank, and a cylindrical PVC pipe is used as the filter device. The PVC pipe used is 30cm long, 3cm in inner diameter, and has an effective volume of about 211.95cm 3 The aquaculture tail water was 76 mL min -1The tail water is treated by a filter device filled with water purification materials configured with biological beads and bacterial rings in a ratio of 1:1, with a total nitrogen removal rate of 22%, a total phosphorus removal rate of 95%, an ammonia nitrogen removal rate of 10%, a nitrate nitrogen removal rate of 12%, and a nitrite nitrogen removal rate of 20%.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several changes and substitutions without departing from the principle of the present invention. These changes and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture, characterized in that: The invention comprises an integrally arranged filter purification barrel (1) and a water storage barrel (2), wherein the filter purification barrel (1) and the water storage barrel (2) are separated by a grid-shaped disc, and the filter purification barrel (1) is filled with a combined water purification material (4); the filter purification barrel (1) and the water storage barrel (2) are tiltedly placed above a high-position breeding pond (13) via a bracket (10), the low position of the filter purification barrel (1) is connected to a water inlet pipe (6), and the high position of the water storage barrel (2) is connected to a water outlet pipe (8); an engine (5) is fixed in the filter purification barrel (1) and the water storage barrel (2), and the engine (5) is connected to a filter extending into the filter. A brush (3) of the purification barrel (1); a water inlet pipe (6) connected to a water inlet hose (12) via a water pump (11) at the bottom of a high-position breeding pond (13); a converging three-way valve (7) is provided in the middle section of the water inlet pipe (6); the lower end of the converging three-way valve (7) is used for the inlet of breeding tail water, and the side end of the converging three-way valve (7) is used for the inlet cleaning device; a diverting three-way valve (9) is provided in the middle section of the water outlet pipe (8); the lower end of the diverting three-way valve (9) is used for the purified breeding tail water to flow back to the high-position breeding pond (13), and the side end of the diverting three-way valve (9) is used for the discharge of sewage.

2. The washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture according to claim 1 is characterized in that: The end of the water inlet hose (12) is provided with a stainless steel ring for counterweight; and the end of the water inlet hose (12) is installed with a stainless steel net.

3. The washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture according to claim 1 is characterized in that: The filling volume of the combined water purification material (4) does not exceed 2 / 3 of the volume of the filtration purification barrel (1); the combined water purification material (4) is composed of biological beads and bacterial rings in a 1:1 configuration, and the individual diameter or length is not less than 2 cm.

4. The washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture according to claim 1 is characterized in that: The integrally arranged filtering and purifying barrel (1) and the water storage barrel (2) form an angle of 20 degrees with the ground.

5. The washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture according to claim 1 is characterized in that: The outer layer of the engine (5) is provided with a waterproof coating.

6. The washable three-dimensional tailwater filtration device suitable for high-position pond aquaculture according to claim 1 is characterized in that: The material of the grid-shaped disc is stainless steel, and the grid side length of the grid-shaped disc is 1 cm.

Images