Ecological strengthening equipment and method for micro-polluted water body

Abstract

The invention discloses micro-polluted water ecological enhancement equipment and a micro-polluted water ecological enhancement method, and belongs to the technical field of environmental protection engineering micro-polluted water treatment. The micro-polluted water ecological enhancement equipment comprises a sand removal area, a carbon source release area, an in-situ microorganism amplification area, an in-situ microorganism release area and an in-situ microorganism retention area, the desanding area, the carbon source release area, the in-situ microorganism amplification area, the in-situ microorganism release area and the in-situ microorganism retention area are sequentially arranged in the equipment shell, and the in-situ microorganism release area and the in-situ microorganism retention area are communicated up and down. The immobilized microorganisms from the water body are adopted, foreign strains are not used, the adaptability of a community structure is guaranteed, the water quality of the micro-polluted water body can be effectively improved, technical support is provided for treatment of the micro-polluted water body, and compared with the mode that a carbon source or foreign strains are put in the prior art, the environmental pollution risk can be reduced, and the ecological system safety can be guaranteed; and the method has good social benefits and environmental benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of micro-polluted water treatment in environmental protection engineering, and in particular to a micro-polluted water ecological enhancement device and method. Background Art

[0002] Micro-polluted water refers to water that is polluted by organic matter, some of whose indicators do not meet the Class IV standard of the Environmental Quality Standard for Surface Water (GB3838-2002). It is difficult to achieve the ideal standard by using conventional removal processes. The main sources of pollution in micro-polluted water are non-point source pollution and endogenous pollution. The main non-point source pollution includes livestock and poultry breeding and aquaculture pollution around micro-polluted water bodies, and tailwater discharge pollution during fertilization of surrounding farmland; endogenous pollution mainly comes from sediment pollution release. At present, the commonly used technologies for the treatment of micro-polluted water bodies mainly include physical methods, chemical methods, in-situ ecological enhancement methods, etc. However, all of the above methods have certain defects.

[0003] Chinese patent document publication number CN 113480015 B discloses a microbial control device for urban rivers. By setting a mixing component, the medicine in the mixing chamber is always in a stirring state, which effectively improves the practicality. By setting a spraying component, the medicine is sprayed more comprehensively and evenly in the river, which improves the comprehensiveness of the medicine spraying. However, the continuous use of spraying medicine as a microbial control method is not only complex in process and huge in workload, but also has relatively limited conditions for use.

[0004] Chinese patent document publication number CN202111350723.0 discloses a microbial activation system and a method for preparing a microbial activation filler. Its use conditions are mainly black, smelly and eutrophic water bodies. It is difficult to achieve water purification effects for slightly polluted water bodies. The biological activation fillers used are inorganic carriers, inorganic flocculants, inorganic metal salts and oxidative decolorizers. Its main mechanism acts on the adsorption and coagulation of suspended matter in water bodies. It is difficult to promote and stimulate microbial activity and increase the number of microorganisms both in theory and in practice. Summary of the invention

[0005] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose an ecological enhancement device that can effectively increase the number and activity of microorganisms and improve the quality of slightly polluted water.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention provides a micro-polluted water ecological enhancement device and method, comprising a sand removal area, a carbon source release area, an in-situ microorganism amplification area, an in-situ microorganism release area and an in-situ microorganism retention area, wherein the sand removal area, the carbon source release area, the in-situ microorganism amplification area, the in-situ microorganism release area and the in-situ microorganism retention area are sequentially arranged in the device housing, and the in-situ microorganism release area and the in-situ microorganism retention area are connected up and down;

[0008] A first water inlet pipe and a sand discharge pipe are connected between the sand removal area and the equipment housing, a plurality of groups of inclined pipes are installed at equal intervals inside the sand removal area, a sand discharge inclined plate is installed at the bottom of the sand removal area, and a water outlet of the sand settling area is arranged at the top of the sand removal area;

[0009] The carbon source release zone is provided with multiple groups of porous partitions, a slow-release carbon source is placed in the middle of the porous partitions, and a vent pipe and a carbon source slow-release outlet are provided at the bottom of the carbon source release zone; the in-situ microbial amplification zone is provided with immobilized microorganism A, inorganic minerals and immobilized microorganism B in sequence, and the top of the in-situ microbial amplification zone is provided with an amplification zone water outlet;

[0010] A first water outlet pipe and a first internal circulation water outlet are arranged at the bottom of the in-situ microorganism release zone, an overflow pipe is connected to the top of the in-situ microorganism release zone, a filler is arranged inside the in-situ microorganism retention zone, an air inlet pipe is arranged inside the in-situ microorganism buffer zone, one end of the air inlet pipe passes through the bottom of the in-situ microorganism buffer zone and is connected to a circulation pump, and the end of the circulation pump away from the air inlet pipe is respectively connected to the second water inlet pipe and the second water outlet pipe, a plurality of groups of releasers are arranged at the bottom of the in-situ microorganism buffer zone, an emptying pipe is connected to one side of the in-situ microorganism buffer zone, and a second internal circulation water outlet is arranged on one side of the top of the in-situ microorganism buffer zone.

[0011] The preferred technical solution of the present invention is that the inclined tube is made of a honeycomb inclined tube selected from PP, PE or PVC, the horizontal inclination angle range of the inclined tube is 65°-75°, the tube diameter range is 65-80mm, and the vertical clearance of the inclined tube is 60-90mm; the first water inlet pipe is a stainless steel or galvanized steel pipe with a tube diameter of φ32, a designed water inlet flow rate of 400-450L / h, and a height of 30cm from the center line of the pipe to the floor; the sand discharge inclined plate is a galvanized steel plate with a plate thickness of 4.7mm and a horizontal inclination angle of 20°-30°; the diameter of the water outlet opening in the sand settling area is 50mm, and the center line of the hole is 10-15mm away from the top plate.

[0012] The preferred technical solution of the present invention is that the carbon source release area is provided with 16 slow-release carbon source storage units, the porous partition is made of stainless steel, the plate thickness is 2mm, the pore size is 15-30mm, and the pore spacing is 15-30mm; the slow-release carbon source is one or more combinations of polyvinyl alcohol, polylactic acid, cellulose, beeswax, palm wax, polybutylene succinate, and polycaprolactone.

[0013] The preferred technical solution of the present invention is that the volume ratio of the immobilized microorganism A, the inorganic mineral and the immobilized microorganism B is 2:1:1, the immobilized microorganism A is mainly COD degrading bacteria and polyphosphate bacteria, and the immobilized microorganism B is mainly nitrifying bacteria, denitrifying bacteria and simultaneous nitrification and denitrification bacteria; the inorganic minerals are red rhyolite volcanic rock and basalt volcanic rock, and the ratio of the two is 2:1 to 4:1.

[0014] The preferred technical solution of the present invention is that the diameter of the first water outlet pipe is φ32, the diameter of the overflow pipe is φ50, and the diameter of the opening of the first internal circulation water outlet is 50 mm.

[0015] The preferred technical solution of the present invention is that the volume proportion of the filler is 65%-80%, the filler can be one of carbamate, polyurethane, polystyrene, and the specific surface area is not less than 2000㎡ / g; the circulating pump is a gas-liquid mixing pump with a design flow rate of 100-500L / h; the releaser is made of PBS material, the diameters of the second water inlet pipe, the air inlet pipe and the second water outlet pipe are all φ25, and the material is UPVC; the two ends of the air inlet pipe are respectively fixed to the equipment casing by pipe clamps and partitions, the diameter of the drain pipe is 32mm, and the center line of the pipe is 10mm above the bottom plate.

[0016] The preferred technical solution of the present invention is that the immobilized microorganism A is mainly taken from the 1-5 cm mud layer on the surface of the bottom mud and is immobilized by a cross-linking reaction immobilization technology; the immobilized microorganism B is mainly taken from the 3-10 cm mud layer on the surface of the bottom mud and is immobilized by an embedding technology.

[0017] A preferred technical solution of the present invention is that the bottom of the in-situ microbial amplification zone is connected to the second water outlet pipe through a branch pipe, and a valve is provided on the branch pipe.

[0018] A method for enhancing the ecology of a slightly polluted water body, the method comprising the following steps:

[0019] Step 1: According to the designed water inlet control parameters, the equipment is initially filled with water for 1-2 days, and the valve is fully opened;

[0020] Step 2: Stop water inflow for 1-2 days. During the period of stopping water inflow, open the valve 1 / 2 to complete the initial startup;

[0021] Step 3: The valve is completely closed and the equipment operates normally with water inlet and outlet.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention integrates sand removal, slow-release carbon source and immobilized microorganisms, which can effectively increase the number and activity of microorganisms, effectively increase the number of beneficial microorganisms in slightly polluted water bodies, improve the self-purification ability of water bodies, and break through the technical bottleneck of the current technology for treating slightly polluted water bodies;

[0024] 2. The immobilized microorganisms used in the present invention are derived from the water body itself, without using foreign bacteria, thus ensuring the adaptability of the community structure and protecting the safety of the ecosystem;

[0025] 3. The slow-release carbon source and immobilized microorganisms used in the present invention can effectively control the release rate, and compared with the carbon source release method in the prior art, can reduce the risk of environmental pollution;

[0026] 4. The present invention has a simple process, small footprint, convenient operation and management, low investment and operating costs, and is particularly suitable for improving the water quality of slightly polluted water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure provided in a specific embodiment of the present invention;

[0028] Figure 2 It is a cross-sectional view of the overall structure provided in a specific embodiment of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 10. Sand removal area; 11. First water inlet pipe; 12. Inclined pipe; 13. Sand discharge pipe; 14. Sand discharge inclined plate; 15. Water outlet of sand settling area; 20. Carbon source release area; 21. Slow-release carbon source; 22. Porous partition; 23. Vent pipe; 24. Carbon source slow-release outlet; 30. In-situ microbial amplification area; 31. Immobilized microorganism A; 32. Inorganic minerals; 33. Immobilized microorganism B; 34. Water outlet of amplification area; 35. Valve; 36. Branch pipe; 40. In-situ microbial release zone; 41. First water outlet pipe; 42. First internal circulation water outlet; 43. Overflow pipe; 50. In-situ microbial retention zone; 51. Filler; 52. Circulation pump; 53. Releaser; 54. Second water inlet pipe; 55. Air inlet pipe; 56. Second water outlet pipe; 57. Partition; 571. Pipe clamp; 58. Drain pipe; 59. Second internal circulation water outlet. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0032] Embodiment 1

[0033] The experiment selected a slightly polluted reservoir in Zhoushan, Zhejiang, with an area of ​​20,000 square meters. The main exceeding factor was total nitrogen, and other water quality indicators met the water quality requirements. The main sources of pollution were surface runoff pollution and endogenous pollution.

[0034] As attached Figure 1-2 As shown, a slightly polluted water ecological enhancement equipment has a design size of 3m*2m*2m (length, width and height) for the equipment shell, and is made of 304 stainless steel. The design size of the sand removal area 10 is 1m*2m*2m (length, width and height). The inclined pipe 12 is made of a honeycomb inclined pipe of PP, and the horizontal inclination angle of the inclined pipe 12 is 65°, the pipe diameter is 70mm, and the vertical clearance of the inclined pipe 12 is 80mm. The first water inlet pipe 11 is made of stainless steel pipe with a pipe diameter of φ32, a designed water inlet flow rate of 420L / h, and a height of 30cm from the center line of the pipe to the floor; the sand discharge inclined plate 14 is a galvanized steel plate with a plate thickness of 4.7mm and a horizontal inclination angle of 25°. The water outlet 15 of the sand settling area has an opening diameter of 50mm, and the center line of the hole is 15mm away from the top plate.

[0035] The design size of the carbon source release area 20 is 0.5m*2m*2m (length, width and height), and 16 slow-release carbon source storage units are designed. The porous partition 22 is made of stainless steel, with a plate thickness of 2mm, a pore diameter of 20mm, and a pore spacing of 25mm; the slow-release carbon source 21 is composed of four components: polylactic acid, cellulose, palm wax, and polycaprolactone, with a ratio of 1:4:2:2 (weight ratio).

[0036] The design size of the in-situ microbial amplification zone 30 is 0.5m*2m*2m (length, width and height). The volume ratio of immobilized microorganism A31, inorganic mineral 32 and immobilized microorganism B33 is 2:1:1. The immobilized microorganism A31 is COD degrading bacteria and polyphosphate bacteria, and the immobilized microorganism B33 is nitrifying bacteria, denitrifying bacteria and simultaneous nitrification and denitrification bacteria; the inorganic mineral 32 is red rhyolite volcanic rock and basalt volcanic rock, with a ratio of 3:1.

[0037] The design size of the in-situ microorganism release zone 40 is 0.5m*2m*2m (length, width and height), the diameter of the first outlet pipe 41 is φ32, the diameter of the overflow pipe 43 is φ50, and the opening diameter of the first internal circulation outlet 42 at the bottom of the in-situ microorganism release zone 40 is 50mm.

[0038] The volume proportion of the filler 51 inside the in-situ microbial buffer zone 50 is 70%, and the filler 51 is a polyurethane filler with a specific surface area of ​​3000 m2 / g; the circulation pump 52 is a gas-liquid mixing pump with a design flow rate of 300 L / h; the releaser 53 is made of PBS material, and the diameters of the second water inlet pipe 54, the air inlet pipe 55 and the second water outlet pipe 56 are all φ25, and the material is UPVC. The air inlet pipe 55 is fixed to the equipment casing by a pipe clamp 571 and a partition 57; the diameter of the drain pipe 58 is 32 mm, and the center line of the pipe is 10 mm above the bottom plate.

[0039] The designed water intake of this embodiment is 420L / h. The equipment is initially operated for 2 days with water intake, and the valve 35 is fully opened. Then the water intake is stopped for 3 days, and the valve 35 is opened 1 / 2 to achieve the initial startup. The valve 35 is closed, and the equipment operates normally with water intake and water discharge. The water quality data of the equipment operating normally for 1 week, 1 month and 1 year are shown in Table 1.

[0040] Table 1 Water quality data (unit: mg / L)

[0041]

[0042]

[0043] The present invention stimulates the cultivation of COD-degrading bacteria, nitrifying bacteria and denitrifying bacteria through the slow-release carbon source technology, realizes the reproduction of beneficial bacteria, and supplements them into the existing water body, thereby increasing the number of microbial decomposers in the slightly polluted water body, thereby effectively improving the self-purification capacity of the water environment, and having a significant effect on the water quality and ecological enhancement of the slightly polluted water body.

[0044] The present invention solves the problem of poor self-purification ability of micro-polluted water bodies. The immobilized microorganisms are derived from the water body itself, and no foreign strains are used, thereby ensuring the adaptability of the community structure. The water quality of micro-polluted water bodies can be effectively improved, and technical support can be provided for the treatment of micro-polluted water bodies. Compared with the existing technology of introducing carbon sources or foreign strains, the present invention can reduce the risk of environmental pollution and ensure the safety of the ecosystem, and has good social and environmental benefits.

[0045] Embodiment 2

[0046] The experiment selected a slightly polluted water body in Foshan, Guangdong, with an area of ​​10,000 square meters. The main exceeding factors were ammonia nitrogen, COD and total phosphorus. Other water quality indicators met the water quality requirements. The main pollution sources were surface runoff pollution and endogenous pollution.

[0047] As attached Figure 1-2As shown, a slightly polluted water ecological enhancement equipment has a design size of 3m*2m*2m (length, width and height) for the equipment shell, and is made of 304 stainless steel. The design size of the sand removal area 10 is 1m*2m*2m (length, width and height). The inclined pipe 12 is made of a honeycomb inclined pipe of PP, and the horizontal inclination angle of the inclined pipe 12 is 70°, the pipe diameter is 75mm, and the vertical clearance of the inclined pipe 12 is 75mm. The first water inlet pipe 11 is made of stainless steel pipe with a pipe diameter of φ32, a designed water inlet flow rate of 420L / h, and a height of 30cm from the center line of the pipe to the floor; the sand discharge inclined plate 14 is a galvanized steel plate with a plate thickness of 4.7mm and a horizontal inclination angle of 30°. The water outlet 15 of the sand settling area has an opening diameter of 50mm, and the center line of the hole is 15mm away from the top plate.

[0048] The design size of the carbon source release area 20 is 0.5m*2m*2m (length, width and height), and 16 slow-release carbon source storage units are designed. The porous partition 22 is made of stainless steel, with a plate thickness of 2mm, a pore diameter of 20mm, and a pore spacing of 25mm; the slow-release carbon source 21 is composed of three components: polylactic acid, palm wax, and polycaprolactone, with a ratio of 1:3:2 (weight ratio).

[0049] The design size of the in-situ microbial amplification zone 30 is 0.5m*2m*2m (length, width and height). The volume ratio of immobilized microorganism A31, inorganic mineral 32 and immobilized microorganism B33 is 2:1:2. The immobilized microorganism A31 is COD degrading bacteria and polyphosphate bacteria, and the immobilized microorganism B33 is nitrifying bacteria, denitrifying bacteria and simultaneous nitrification and denitrification bacteria; the inorganic mineral 32 is red rhyolite volcanic rock and basalt volcanic rock, with a ratio of 3:2.

[0050] The design size of the in-situ microorganism release zone 40 is 0.5m*2m*2m (length, width and height), the diameter of the first outlet pipe 41 is φ32, the diameter of the overflow pipe 43 is φ50, and the opening diameter of the first internal circulation outlet 42 at the bottom of the in-situ microorganism release zone 40 is 50mm.

[0051] The volume proportion of the filler 51 inside the in-situ microbial buffer zone 50 is 75%, and the filler 51 is a polyurethane filler with a specific surface area of ​​4000 m2 / g; the circulation pump 52 is a gas-liquid mixing pump with a designed flow rate of 300 L / h; the releaser 53 is made of PBS material, and the diameters of the second water inlet pipe 54, the air inlet pipe 55 and the second water outlet pipe 56 are all φ25, and the material is UPVC. The air inlet pipe 55 is fixed to the equipment casing by a pipe clamp 571 and a partition 57; the diameter of the drain pipe 58 is 32 mm, and the center line of the pipe is 10 mm above the bottom plate.

[0052] The designed water intake of this embodiment is 500L / h. The equipment is initially operated for 2 days with water intake, and the valve 35 is fully opened. Then the water intake is stopped for 3 days, and the valve 35 is opened 1 / 2 to achieve the initial startup. The valve 35 is closed, and the equipment operates normally with water intake and water discharge. The water quality data of the equipment operating normally for 1 week, 1 month and 1 year are shown in Table 2.

[0053] Table 2 Water quality data (unit: mg / L)

[0054]

[0055]

[0056] The present invention stimulates the cultivation of COD-degrading bacteria, nitrifying bacteria and denitrifying bacteria through the slow-release carbon source technology, realizes the reproduction of beneficial bacteria, and supplements them into the existing water body, thereby increasing the number of microbial decomposers in the slightly polluted water body, thereby effectively improving the self-purification capacity of the water environment, and having a significant effect on the water quality and ecological enhancement of the slightly polluted water body.

[0057] The present invention solves the problem of poor self-purification ability of micro-polluted water bodies. The immobilized microorganisms are derived from the water body itself, and no foreign strains are used, thereby ensuring the adaptability of the community structure. The water quality of micro-polluted water bodies can be effectively improved, and technical support can be provided for the treatment of micro-polluted water bodies. Compared with the existing technology of introducing carbon sources or foreign strains, the present invention can reduce the risk of environmental pollution and ensure the safety of the ecosystem, and has good social and environmental benefits.

[0058] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A micro-polluted water ecological enhancement device, characterized by: The device comprises a sand removal zone (10), a carbon source release zone (20), an in-situ microorganism amplification zone (30), an in-situ microorganism release zone (40) and an in-situ microorganism retention zone (50), wherein the sand removal zone (10), the carbon source release zone (20), the in-situ microorganism amplification zone (30), the in-situ microorganism release zone (40) and the in-situ microorganism retention zone (50) are sequentially arranged in the device housing, and the in-situ microorganism release zone (40) and the in-situ microorganism retention zone (50) are connected to each other from top to bottom; A first water inlet pipe (11) and a sand discharge pipe (13) are connected between the sand removal zone (10) and the equipment housing; a plurality of groups of inclined pipes (12) are installed at equal intervals inside the sand removal zone (10); a sand discharge inclined plate (14) is installed at the bottom of the sand removal zone (10); and a sand settling zone water outlet (15) is provided at the top of the sand removal zone (10); The carbon source release zone (20) is provided with a plurality of groups of porous partitions (22), a slow-release carbon source (21) is placed in the middle of the porous partitions (22), and a venting pipe (23) and a carbon source slow-release outlet (24) are provided at the bottom of the carbon source release zone (20); immobilized microorganism A (31), inorganic minerals (32) and immobilized microorganism B (33) are provided in sequence inside the in-situ microorganism amplification zone (30), and an amplification zone water outlet (34) is provided at the top of the in-situ microorganism amplification zone (30); A first water outlet pipe (41) and a first internal circulation water outlet (42) are arranged at the bottom of the in-situ microorganism release zone (40), an overflow pipe (43) is connected to the top of the in-situ microorganism release zone (40), a filler (51) is arranged inside the in-situ microorganism retention zone (50), an air inlet pipe (55) is arranged inside the in-situ microorganism buffer zone (50), one end of the air inlet pipe (55) passes through the bottom of the in-situ microorganism buffer zone (50) and is connected to a circulation pump (52), and one end of the circulation pump (52) away from the air inlet pipe (55) is respectively connected to a second water inlet pipe (54) and a second water outlet pipe (56), a plurality of groups of releasers (53) are arranged at the bottom of the in-situ microorganism buffer zone (50), a drain pipe (58) is connected to one side of the in-situ microorganism buffer zone (50), and a second internal circulation water outlet (59) is arranged on one side of the top of the in-situ microorganism buffer zone (50).

2. The micro-polluted water ecological enhancement device according to claim 1, characterized in that: The inclined tube (12) is made of a honeycomb inclined tube selected from PP, PE or PVC. The horizontal inclination angle of the inclined tube (12) is in the range of 65°-75°, the diameter is in the range of 65-80 mm, and the vertical clearance of the inclined tube (12) is 60-90 mm. The first water inlet pipe (11) is a stainless steel or galvanized steel pipe with a diameter of φ32, a designed water inlet flow rate of 400-450 L / h, and a height of 30 cm from the center line of the pipe to the floor. The sand discharge inclined plate (14) is a galvanized steel plate with a thickness of 4.7 mm and a horizontal inclination angle of 20°-30°. The opening diameter of the sand settling area outlet (15) is 50 mm, and the center line of the hole is 10-15 mm from the top plate.

3. The micro-polluted water ecological enhancement device according to claim 1 is characterized by: The carbon source release area (20) is provided with 16 slow-release carbon source storage units. The porous partition (22) is made of stainless steel, with a plate thickness of 2 mm, a pore size of 15-30 mm, and a pore spacing of 15-30 mm. The slow-release carbon source (21) is one or more combinations of polyvinyl alcohol, polylactic acid, cellulose, beeswax, palm wax, polybutylene succinate, and polycaprolactone.

4. The micro-polluted water ecological enhancement device according to claim 1, characterized in that: The volume ratio of the immobilized microorganism A (31), the inorganic mineral (32) and the immobilized microorganism (32) B is 2:1:1, the immobilized microorganism A (31) is mainly COD degrading bacteria and polyphosphate bacteria, and the immobilized microorganism (33) B is mainly nitrifying bacteria, denitrifying bacteria and simultaneous nitrification and denitrification bacteria; the inorganic mineral (32) is red rhyolite volcanic rock and basalt volcanic rock, and the ratio of the two is 2:1~4:

1.

5. The micro-polluted water ecological enhancement equipment according to claim 1 is characterized by: The diameter of the first water outlet pipe (41) is φ32, the diameter of the overflow pipe (43) is φ50, and the opening diameter of the first internal circulation water outlet (42) is 50 mm.

6. The micro-polluted water ecological enhancement equipment according to claim 1 is characterized by: The volume proportion of the filler (51) is 65%-80%, and the filler (51) may be one of carbamate, polyurethane, and polystyrene, and the specific surface area is not less than 2000 m2 / g; the circulation pump (52) is a gas-liquid mixing pump, and the design flow rate is 100-500 L / h; the releaser (53) is made of PBS material, and the diameters of the second water inlet pipe (54), the air inlet pipe (55), and the second water outlet pipe (56) are all φ25, and the material is all UPVC; the two ends of the air inlet pipe (55) are fixed to the equipment housing by pipe clamps (571) and partitions (57), respectively; the diameter of the drain pipe (58) is 32 mm, and the height of the center line of the pipe from the bottom plate is 10 mm.

7. The micro-polluted water ecological enhancement equipment according to claim 1 is characterized by: The immobilized microorganism A (31) is mainly taken from the 1-5 cm mud layer on the surface of the bottom mud and is immobilized by a cross-linking reaction immobilization technology; the immobilized microorganism B (33) is mainly taken from the 3-10 cm mud layer on the surface of the bottom mud and is immobilized by an embedding technology.

8. The micro-polluted water ecological enhancement equipment according to claim 1 is characterized by: The bottom of the in-situ microorganism amplification zone (30) is connected to the second water outlet pipe (56) via a branch pipe (36), and a valve (35) is provided on the branch pipe (36).

9. A method for enhancing the ecology of slightly polluted water bodies, characterized in that: Using the micro-polluted water ecological enhancement device according to any one of claims 1 to 8, the enhancement method comprises the following steps: Step 1: According to the designed water inlet control parameters, the equipment is initially filled with water for 1-2 days, and the valve (35) is fully opened; Step 2: Stop water inflow for 1-2 days. During the stop period, the valve (35) is opened by 1 / 2 to complete the initial startup. Step 3: The valve (35) is completely closed, and the equipment operates normally with water inlet and outlet.

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