Mariculture biofilter

Abstract

The utility model provides a mariculture biofilter which comprises a porous biological filler intercepting device, an aerating device and a reaction tank, and is characterized in that the reaction tank is of a cylindrical structure, the bottom of the reaction tank is connected with a pipeline I, and the pipeline I is provided with a water outlet and a water outlet exhaust pipe from bottom to top; the bottom of the reaction tank is connected with a high-pressure centrifugal fan through a pipeline II, the other end of the pipeline II is connected with two aeration pipes, a water inlet is formed in the upper portion of the reaction tank, the other end of the water inlet is connected with a rotary water distributor, and the middle of the reaction tank is connected with a liquid level observation pipe. The lower end of the reaction tank is connected with a pipeline VI, and the pipeline I, the pipeline II and the pipeline VI are respectively provided with a water outlet valve, an air inlet pipe valve and a blow-down valve. The utility model has the beneficial effects that the problems that a porous biological filler intercepting device with large water passing area and small water passing flow velocity cannot be used, two porous aeration pipes cannot be used at the same time and the like are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of seawater aquaculture tail water treatment, in particular to a seawater aquaculture biological filter. Background Art

[0002] Biofilters utilize the growth and metabolism of microorganisms to remove harmful substances from water, converting organic matter into carbon dioxide, water and harmless substances, thereby reducing the concentration of harmful substances in water. Currently, biofilters have been widely used in marine aquaculture, aquariums, waterscape pools and wastewater treatment. However, in the process of use, the biofilters of the prior art cannot use porous biological filler interception devices with large water flow areas and low water flow rates, cannot effectively improve the efficiency of the biofilter, cannot use two porous aeration pipes at the same time, and cannot significantly increase the dissolved oxygen concentration of the tail water.

[0003] The invention patent with the patent number ZL202321312285.3 discloses a "manganese and iron removal device". The utility model includes a treatment box, an aeration mechanism, multiple filter materials and a backwashing mechanism. The aeration mechanism is arranged in the treatment box, and the aeration mechanism is used to supply oxygen to each treatment area. Filter materials are arranged in each treatment area. The backwashing mechanism is provided with a circulation pipe, and a water pump is arranged on the circulation pipe. One end of the circulation pipe is connected to the lower end of the treatment box, and the other end of the circulation pipe is divided into multiple flushing pipes, and the multiple flushing pipes are connected to multiple treatment areas one by one. The raw water flows through the filter materials in multiple treatment areas in turn. The iron ions and manganese ions in the raw water are adsorbed by the biofilm covering the surface of the filter material after aeration, and are oxidized by dissolved oxygen under the action of catalysis and adsorbed on the filter material. The oxides generated by oxidation participate in the new catalytic reaction as a new filter membrane. After the water production runs for a cycle, the excess oxides are washed away by the backwashing mechanism. This embodiment uses the filtered raw water to backwash the filter material, saving water and being green and environmentally friendly.

[0004] The invention patent with the patent number ZL201910880449.4 discloses a "comprehensive deodorization process of microbial enhanced proliferation reactor". The invention includes the following specific steps: S1, aerobic tank activated sludge microbial enhanced proliferation; S2, activated sludge is returned to the front gas-producing water tank, and the odor source in the sewage of each tank body is decomposed and the generation and volatilization of odor are inhibited; S3, the odor is collected and sent to the terminal biological aeration tank for aeration and spraying treatment. The present invention also provides a comprehensive deodorization device for a microbial enhanced proliferation reactor, including an activated sludge microbial enhanced proliferation system, an activated sludge front-end reflux system and a biological deodorization terminal treatment system. The activated sludge microbial enhanced proliferation system includes an aerobic tank, a microbial enhanced proliferation reactor and a blower. The present invention realizes comprehensive odor treatment of the sewage treatment system by enhancing the proliferation of activated sludge microorganisms, performing front-end pollutant suppression control and terminal treatment, with very high treatment efficiency, and achieving zero emission of odor. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides a seawater aquaculture biological filter, which is equipped with a porous biological filler interception device and an aeration device, etc., and uses a porous biological filler interception device with a large water flow area and a low water flow rate, effectively improving the efficiency of the biological filter, and using two porous aeration pipes at the same time, greatly increasing the dissolved oxygen concentration of the tail water, effectively solving the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0007] The marine aquaculture biological filter comprises a porous biological filler interception device, an aeration device and a reaction tank, and is characterized in that:

[0008] The reaction tank is assembled into a cylindrical structure, a circular hole I is opened on one side of the bottom of the reaction tank, the outer port of the circular hole I is sealed and connected with a pipeline I, the pipeline I is assembled into a vertical upward structure, the lower part of the pipeline I is equipped with a water outlet valve, the upper part of the pipeline I is equipped with a water outlet, the water outlet port is equipped with a flange connector, and the inner port of the circular hole I is sealed and connected with a horizontal porous biological filler interception device;

[0009] A high-pressure centrifugal fan is fixedly mounted on the outer side of the other side of the bottom of the reaction tank through a bracket, and the air outlet of the high-pressure centrifugal fan is sealed and connected to a pipeline II. A circular hole II is opened on the bottom of the reaction tank near the high-pressure centrifugal fan, and the outer port of the circular hole II is sealed and connected to the other end of the pipeline II. An air inlet valve is mounted on the pipeline II, and the inner port of the circular hole II is sealed and connected to an aeration device through a tee I.

[0010] A water inlet is provided on the upper part of the reaction tank, the outer port of the water inlet is equipped with a flange connector, the inner port of the water inlet is sealed connected to a pipeline III, the pipeline III is sealed connected to a rotary water distributor, and the rotary water distributor is installed at the center of the reaction tank.

[0011] The top of the pipeline I is equipped with an outlet exhaust pipe, the top surface of the reaction tank is provided with a circular hole III, the upper end of the circular hole III is sealed and connected to a pipeline IV with a horizontal structure, and the pipeline IV is sealed and connected to the outlet exhaust pipe through a tee II.

[0012] The porous biological filler interception device is assembled into a cylindrical structure, the other end of the porous biological filler interception device is assembled into a closed structure, the side of the porous biological filler interception device is assembled with an interception net, and the porous biological filler interception device is assembled with a filler cavity inside.

[0013] The aeration device is assembled into a U-shaped structure, the other two ends of the tee I are respectively sealed and connected with a pipe V, the pipe V is respectively sealed and connected with a porous aeration pipe through an elbow, and the two porous aeration pipes are assembled into a transversely symmetrical structure.

[0014] A circular hole IV is provided in the middle of the reaction tank, and a liquid level observation tube is sealed and connected to the outer end of the circular hole IV. The liquid level observation tube is assembled in a vertical upward structure.

[0015] An inspection port is provided at the bottom of the reaction tank, a cover plate is provided at the inspection port, a sealing gasket is provided between the inspection port and the cover plate, the inspection port and the cover plate are fixedly connected by bolts, and an electric control box is fixedly connected to the outer wall of the upper part of the reaction tank.

[0016] A circular hole V is provided at the lower end of the reaction tank, and a pipe VI is sealedly connected to the outer end of the circular hole V, and the pipe VI is equipped with a sewage valve.

[0017] The position of the water outlet is higher than the position of circular hole IV, the position of the outlet exhaust pipe is higher than the position of pipeline IV, the position of the liquid level observation pipe is higher than the position of the top surface of the reaction tank, and the positions of circular hole I and circular hole II are symmetrically assembled.

[0018] The liquid level observation tube, pipeline II and pipeline III are all fixedly assembled on the outer wall of the reaction tank through fixing parts.

[0019] The beneficial effects of the utility model are:

[0020] The utility model is provided with a porous biological filler interception device, and a corresponding interception net, a filler cavity circular hole I and a pipeline I, etc., which can use a porous biological filler interception device with a large water flow area and a low water flow rate, effectively improve the efficiency of the biological filter, and effectively solve the problem that the porous biological filler interception device with a large water flow area and a low water flow rate cannot be used, and the efficiency of the biological filter cannot be effectively improved.

[0021] The utility model is provided with an aeration device, and two corresponding porous aeration tubes, a circular hole II, a three-way I and a pipeline V, etc., so that the two porous aeration tubes can be used at the same time to greatly improve the dissolved oxygen concentration of the tail water, and effectively solves the problem that the two porous aeration tubes cannot be used at the same time and the dissolved oxygen concentration of the tail water cannot be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 This is a schematic diagram of the front view structure of the utility model Figure 1 ;

[0023] Attached Figure 2 This is a schematic diagram of the front view structure of the utility model Figure 2 ;

[0024] Attached Figure 3 It is a schematic diagram of the top cross-sectional structure of the utility model.

[0025] Legend:

[0026] 1. Reaction tank, 2. Porous biological filler interception device, 3. Interception net, 4. Filler cavity, 5. Aeration device, 6. Porous aeration pipe, 7. High-pressure centrifugal fan, 8. Inlet pipe valve, 9. Water inlet, 10. Rotary water distributor, 11. Outlet valve, 12. Water outlet, 13. Outlet exhaust pipe, 14. Liquid level observation tube, 15. Inspection port, 16. Cover plate, 17. Electric control box, 18. Drain valve, 19. Round hole I, 20. Round hole II, 21. Round hole III, 22. Round hole IV, 23. Round hole V, 24. Pipeline I, 25. Pipeline II, 26. Pipeline III, 27. Pipeline IV, 28. Pipeline V, 29. Pipeline VI, 30. Tee I, 31. Tee II. DETAILED DESCRIPTION

[0027] Combination Figure 1 , Figure 2 , Figure 3 The utility model is further described in detail with examples so that the public can better understand the implementation method of the utility model. The specific implementation method of the utility model is as follows:

[0028] The marine aquaculture biological filter comprises a porous biological filler interception device 2, an aeration device 5 and a reaction tank 1, and is characterized in that:

[0029] The reaction tank 1 is assembled into a cylindrical structure, a circular hole Ⅰ19 is opened on one side of the bottom of the reaction tank 1, and the outer port of the circular hole Ⅰ19 is sealed and connected with a pipeline Ⅰ24, and the pipeline Ⅰ24 is assembled into a vertical upward structure, and the lower part of the pipeline Ⅰ24 is equipped with a water outlet valve 11, and the upper part of the pipeline Ⅰ24 is equipped with a water outlet 12, and the port of the water outlet 12 is equipped with a flange connector, and the inner port of the circular hole Ⅰ24 is sealed and connected with a horizontal porous biological filler interception device 2;

[0030] A high-pressure centrifugal fan 7 is fixedly mounted on the outer side of the other side of the bottom of the reaction tank 1 through a bracket, and the air outlet of the high-pressure centrifugal fan 7 is sealed and connected to a pipeline II 25. A circular hole II 20 is opened on the bottom of the reaction tank 1 near the high-pressure centrifugal fan 7. The outer port of the circular hole II 20 is sealed and connected to the other end of the pipeline II 25. An air inlet valve 8 is mounted on the lower part of the pipeline II 25. The inner port of the circular hole II 20 is sealed and connected to an aeration device 5 through a tee I 30.

[0031] A water inlet 9 is opened on the upper part of the reaction tank 1, and the outer port of the water inlet 9 is equipped with a flange connector. The inner port of the water inlet 9 is sealed and connected to a pipeline III 26, and the pipeline III 26 is sealed and connected to a rotary water distributor 10. The rotary water distributor 10 is installed at the center position of the reaction tank 1.

[0032] The top of the pipe I 24 is equipped with a water outlet exhaust pipe 13, the top surface of the reaction tank 1 is provided with a circular hole III 21, the upper end of the circular hole III 21 is sealed and connected with a transversely structured pipe IV 27, and the pipe IV 27 is sealed and connected to the water outlet exhaust pipe 13 through a tee II 31.

[0033] The porous biological filler interception device 2 is assembled into a cylindrical structure, the other end of the porous biological filler interception device 2 is assembled into a closed structure, the side of the porous biological filler interception device 2 is assembled with an interception net 3, and the inside of the porous biological filler interception device 2 is assembled with a filler cavity 4. The porous biological filler interception device 2 has the characteristics of large water flow area, low water flow rate, and easy installation and disassembly, and can effectively improve the efficiency of the biological filter.

[0034] The aeration device 5 is assembled into a U-shaped structure, and the other two ends of the tee I30 are respectively sealed and connected with pipes V28, and the pipes V28 are respectively sealed and connected with porous aeration pipes 6 through elbows. The two porous aeration pipes 6 are assembled into a transversely symmetrical structure. The two porous aeration pipes 6 perform aeration work at the bottom of the tail water at the same time, injecting air into the water, greatly increasing the dissolved oxygen concentration of the tail water, and at the same time, the injected air can play a role of stirring and mixing, and promote the rapid mixing and decomposition of organic matter in the tail water.

[0035] A circular hole IV22 is opened in the middle of the reaction tank 1, and a liquid level observation tube 14 is sealed and connected to the outer end of the circular hole IV22. The liquid level observation tube 14 is assembled into a vertical upward structure.

[0036] An inspection port 15 is provided at the lower portion of the reaction tank 1 , and a cover plate 16 is provided at the port of the inspection port 15 . A sealing gasket is provided between the inspection port 15 and the cover plate 16 . The inspection port 15 and the cover plate 16 are fixedly connected by bolts. An electric control box 17 is fixedly connected to the outer wall of the upper portion of the reaction tank 1 .

[0037] A circular hole V23 is opened at the lower end of the reaction tank 1 , and a pipe VI29 is sealedly connected to the outer end of the circular hole V23 . The pipe VI29 is equipped with a drain valve 18 .

[0038] The position of the water outlet 12 is higher than the position of the circular hole IV22, the position of the outlet exhaust pipe 13 is higher than the position of the pipeline IV22, the position of the liquid level observation tube 14 is higher than the top surface of the reaction tank 1, and the position of the circular hole I19 and the position of the circular hole II20 are symmetrically assembled.

[0039] The liquid level observation tube 14, pipeline II 25 and pipeline III 26 are all fixedly assembled on the outer wall of the reaction tank 1 through fixing parts.

[0040] The working principle and working process of the utility model are as follows: Specific embodiment one:

[0041] Before using the marine aquaculture biological filter to perform biological filtration on the tail water in the marine aquaculture pond, the staff first checks that there are no abnormalities in the various devices of the filter, ensures that the filter is placed stably, connects the external pipe with a submersible pump installed at one end to the water inlet 9 through a flange connector, fixes the submersible pump to the bottom of the marine aquaculture pond, connects the external water outlet pipe to the water outlet 12 through a flange connector, introduces the other end of the external water outlet pipe into the marine aquaculture pond, seals the sewage pipe to connect the pipe VI29, and introduces the other end of the sewage pipe into the sewage container;

[0042] The submersible pump and the electric control box 17 are electrically connected respectively, and the switches of the high-pressure centrifugal fan 7 in the submersible pump and the electric control box 17 are turned on at the same time. The seawater tail water enters the water inlet 9 through the external pipeline through the force of the submersible pump, and then flows into the rotary water distributor 10 through the pipeline III 26. Under the pressure of the water flow, the rotary water distributor 10 automatically drives the preset nozzle of the rotary water distributor 10 to rotate at a uniform speed, and at the same time, the seawater tail water is sprayed uniformly and stably from top to bottom to the reaction tank 1. When the water surface is submerged by the porous biological filler interception device 2 and the aeration device 5, the two porous aeration pipes 6 of the aeration device 5 inject air into the tail water under the pressure of the external air provided by the high-pressure centrifugal fan 7, which can greatly increase the dissolved oxygen concentration of the tail water. At the same time, the injected air can play a role in stirring and mixing, and promote the rapid mixing and decomposition of organic matter in the tail water. At the same time, the porous biological filler interception device 2 has the characteristics of large water flow area, small water flow rate, and convenient installation and disassembly, which can effectively improve the efficiency of the biological filter. 3, large particles of impurities in the tail water are filtered out, and the tail water entering the interception net 3 is evenly distributed on the filter medium. The filter medium adsorbs and intercepts the sediment, suspended matter and inorganic matter converted by the redox reaction by screening, intercepting and adsorbing. The above waste is backwashed by the stirring and mixing action of the aeration device 4, so that the small particles of waste entering the interception net 3 and adsorbed and intercepted by the filter medium are precipitated at the bottom of the reaction tank 1 through the holes of the interception net 3. In addition, the height of the water outlet 12 is much higher than the height of the porous biological filler interception device 2 and the aeration device 5. The tail water in the reaction tank 1 is fully biologically filtered to obtain purified water quality. When the water level in the reaction tank 1 is higher than the water outlet 12, the purified water flows out naturally from the water outlet 12, flows into the seawater aquaculture pond through the external water outlet pipe, and the outlet exhaust pipe 13 discharges the residual gas in the reaction tank 1 through the pipe I 24 and the pipe IV 27, which plays a role in balancing the pressure in the reaction tank 1;

[0043] The liquid level observation tube 14 is used to observe the surface position of the tail water in the reaction tank 1. The staff can increase or decrease the speed of the submersible pump supplying the tail water according to the water surface position. The outlet valve 11 can increase or decrease the flow rate of the purified water according to the water surface position in the liquid level observation tube 14. The air inlet valve 8 can increase or decrease the amount of air and pressure provided to the aeration device 5. The seawater aquaculture biological filter continues to work, and the seawater tail water in the seawater aquaculture pond is continuously biologically filtered. After the biological filter has been running for a period of time, the staff regularly opens the drain valve 18 switch to discharge the sewage at the bottom of the reaction tank 1 through the drain pipe, so that the tail water in the reaction tank 1 is relatively clean. After observing that the discharged sewage is similar to the tail water, the drain valve 18 switch is closed;

[0044] When the biological filtration needs to be finished, the staff turns off the submersible pump switch and stops supplying tail water to the reaction tank 1. When no water flows out of the external water outlet pipe, the high-pressure centrifugal fan 7 switch in the electric control box 17 is turned off, and the staff opens the drain valve 18 switch to drain the sewage in the reaction tank 1 through the drain pipe. The work of the marine aquaculture biological filter is finished. Specific embodiment 2:

[0045] When the marine aquaculture biological filter stops working and needs to be overhauled, the staff uses a bolt tightening tool to open the cover 16, and cleans the dirt on the inner wall of the reaction tank 1, the aeration device 5, the rotary water distributor 10, the outlet valve 11, the drain valve 18 and the air inlet valve 8 through the inspection port 15. The porous biological filler interception device 2 can be disassembled for comprehensive cleaning and replacement of the filter medium to prevent blockage and poor filter medium effect. After the overhaul is completed, the staff uses a bolt tightening tool to use the cover 16 to seal the inspection port 15, and the equipment maintenance work is completed.

Claims

1. A marine aquaculture biological filter, comprising a porous biological filler interception device (2), an aeration device (5) and a reaction tank (1), characterized in that: The reaction tank (1) is configured as a cylindrical structure, a circular hole I (19) is opened on one side of the bottom of the reaction tank (1), the outer end of the circular hole I (19) is sealed and connected to a pipe I (24), the pipe I (24) is configured as a vertical upward structure, a water outlet valve (11) is provided at the lower part of the pipe I (24), a water outlet (12) is provided at the upper part of the pipe I (24), a flange connection is provided at the end of the water outlet (12), and a transverse porous biological filler interception device (2) is sealed and connected to the inner end of the circular hole I (19); A high-pressure centrifugal fan (7) is fixedly arranged on the other side of the bottom of the reaction tank (1) via a bracket, and the air outlet of the high-pressure centrifugal fan (7) is sealedly connected to a pipeline II (25). A circular hole II (20) is provided on one side of the bottom of the reaction tank (1) close to the high-pressure centrifugal fan (7), and the outer end of the circular hole II (20) is sealedly connected to the other end of the pipeline II (25). An air inlet valve (8) is arranged on the pipeline II (25), and the inner end of the circular hole II (20) is sealedly connected to an aeration device (5) via a tee I (30); The reaction tank (1) is provided with a water inlet (9) at the top, the outer end of the water inlet (9) is provided with a flange connection piece, the inner end of the water inlet (9) is sealedly connected to a pipeline III (26), the pipeline III (26) is sealedly connected to a rotary water distributor (10), and the rotary water distributor (10) is provided at the center of the reaction tank (1).

2. A marine aquaculture biofilter as claimed in claim 1, characterized in that: A water outlet exhaust pipe (13) is arranged at the top of the pipe I (24), a circular hole III (21) is opened on the top surface of the reaction tank (1), an upper end of the circular hole III (21) is sealedly connected to a pipe IV (27) with a transverse structure, and the pipe IV (27) is sealedly connected to the water outlet exhaust pipe (13) via a tee II (31).

3. A marine aquaculture biofilter as claimed in claim 1, characterized in that: The porous biological filler interception device (2) is configured as a cylindrical structure, the other end of the porous biological filler interception device (2) is configured as a closed structure, an interception net (3) is provided on the side of the porous biological filler interception device (2), and a filler cavity (4) is provided inside the porous biological filler interception device (2).

4. A marine aquaculture biofilter as claimed in claim 1, characterized in that: The aeration device (5) is configured as a U-shaped structure, the other two ends of the tee I (30) are respectively sealedly connected to a pipe V (28), the pipe V (28) is respectively sealedly connected to a porous aeration pipe (6) via an elbow, and the two porous aeration pipes (6) are configured as a transversely symmetrical structure.

5. A marine aquaculture biofilter as claimed in claim 1, characterized in that: A circular hole IV (22) is provided in the middle of the reaction tank (1), and a liquid level observation tube (14) is sealedly connected to the outer end of the circular hole IV (22), and the liquid level observation tube (14) is arranged in a vertically upward structure.

6. A marine aquaculture biofilter as claimed in claim 1, characterized in that: The reaction tank (1) is provided with an inspection port (15) at the bottom, a cover plate (16) is provided at the end of the inspection port (15), a sealing gasket is provided between the inspection port (15) and the cover plate (16), the inspection port (15) and the cover plate (16) are fixedly connected by bolts, and an electric control box (17) is fixedly connected to the outer wall of the upper part of the reaction tank (1).

7. A marine aquaculture biofilter as claimed in claim 1, characterized in that: A circular hole V (23) is provided at the lower end of the reaction tank (1), and a pipe VI (29) is sealedly connected to the outer end of the circular hole V (23), and the pipe VI (29) is provided with a drain valve (18).

8. A marine aquaculture biofilter as claimed in claim 7, characterized in that: The position of the water outlet (12) is higher than the position of the circular hole IV (22), the position of the outlet exhaust pipe (13) is higher than the position of the pipeline IV (27), the position of the liquid level observation tube (14) is higher than the position of the top surface of the reaction tank (1), and the position of the circular hole I (19) and the position of the circular hole II (20) are symmetrically arranged.

9. A marine aquaculture biofilter as claimed in claim 8, characterized in that: The liquid level observation tube (14), pipeline II (25) and pipeline III (26) are all fixedly arranged on the outer wall of the reaction tank (1) by means of fixing parts.

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