A denitrification and phosphorus removal filter with a tri-oxygen micro-ecological environment and a use method

Abstract

The present application aims to provide a denitrification and phosphorus removal filter with a three-oxygen micro-ecological environment and a use method, which can remove nitrogen and phosphorus by microorganisms and kill tail water by ultraviolet treatment. The barrel of the present application is provided with a water inlet; a mechanical filtration module is arranged in the barrel and connected with the water inlet, which is used for filtering and preliminary treating the tail water; a three-oxygen microorganism module is arranged between the mechanical filtration module and the barrel and communicated with the mechanical filtration module, the three-oxygen microorganism module is formed with an anaerobic zone, a facultative oxygen zone and an aerobic zone, and sufficient nitrification and denitrification reactions are used for the treatment of denitrification and phosphorus removal of the circulating water breeding and the tail water; an ultraviolet module is arranged outside the barrel and used for sterilizing and disinfecting the breeding water or the breeding tail water. The present application is applied to the technical field of industrial circulating water breeding and breeding tail water treatment denitrification and phosphorus removal filter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of denitrification and phosphorus removal filter, and particularly relates to a denitrification and phosphorus removal filter with a three-oxygen micro-ecological environment and a use method. BACKGROUND

[0002] At present, the rapid development of aquaculture has solved the problem of food to some extent, and has met the demand of people for aquatic products, and has solved the problem of relatively short natural fishery resources. However, the rapid development of aquaculture has brought serious pollution to the marine ecological environment, which has become a bottleneck that is difficult to break through in the aquaculture industry of China, and has seriously restricted the sustainable development of the aquaculture industry in China. In seawater fish culture, 20% to 35% of the metabolic products of the feed amount, and 10% to 40% of the residual feed are directly discharged into the water, thereby reducing the dissolved oxygen in the water, increasing the ammonia nitrogen, nitrite nitrogen and nitrate nitrogen, and leading to water eutrophication or water quality deterioration.

[0003] In view of the problem, the common method at present is to continuously discharge the tail water at the bottom of the pool for treatment, and continuously supplement new water, which will lead to continuous increase of water consumption, high breeding cost, and pollution to the environment if the tail water is directly discharged without treatment. On the other hand, since the water temperature and water quality of the supplemented new water are inconsistent with those in the original pool, the fish will produce stress reaction and affect normal growth, and even lead to death, so a denitrification and phosphorus removal filter capable of reducing the supplement of new water and recycling and disinfecting the breeding tail water is needed. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a denitrification and phosphorus removal filter with a three-oxygen micro-ecological environment and a use method, which can remove nitrogen and phosphorus by microorganisms and simultaneously has ultraviolet sterilization and disinfection treatment for tail water.

[0005] The technical solution adopted by the present application is: the present application comprises a barrel, the barrel is provided with a water inlet; a mechanical filtration module is arranged in the barrel and connected with the water inlet, which is used for industrialized recirculating aquaculture and breeding tail water treatment; a three-oxygen microorganism module is arranged between the mechanical filtration module and the barrel and communicates with the mechanical filtration module, the three-oxygen microorganism module forms an anaerobic zone, a facultative oxygen zone and an aerobic zone, which is used for recirculating aquaculture and breeding tail water denitrification and phosphorus removal treatment; an ultraviolet module is arranged outside the barrel, which is used for sterilization and disinfection of breeding water or breeding tail water.

[0006] Further, the mechanical filtration module comprises a filter barrel, a cyclone filtration assembly, a first filter group and a sewage pipe, the filter barrel is arranged in the middle of the barrel body and connected with the water inlet, the cyclone filtration assembly is arranged in the middle of the filter barrel and above the water inlet, the filter barrel is formed with a first cushion block and a connecting groove, the first cushion block is arranged on the inner wall of the filter barrel and above the cyclone filtration assembly, the first filter group is connected with the first cushion block, the connecting groove is arranged outside the filter barrel and connected with the three-oxygen microorganism module, and the sewage pipe is arranged at the bottom of the filter barrel and communicated with an external pipeline.

[0007] Further, the cyclone filtration assembly comprises a cyclone water inlet pipe, a first water inlet cone plate, a cyclone cone plate and a cyclone elbow, the cyclone water inlet pipe is connected with the water inlet, the first water inlet cone plate is arranged in the middle of the filter barrel and above the cyclone water inlet pipe, the cyclone cone plate is arranged above the first water inlet cone plate, the cyclone cone plate is formed with a cyclone sewage pipe, the cyclone sewage pipe penetrates through the bottom of the first water inlet cone plate, and the cyclone elbow is arranged on the cyclone cone plate.

[0008] Further, the filter barrel is provided with a water distribution groove and a water distribution port, the water distribution groove is arranged along the upper portion of the filter barrel in a circumferential direction, and the water distribution ports are arranged at the upper edge of the filter barrel at equal intervals, and the connecting groove is communicated with the water distribution groove.

[0009] Further, the ultraviolet module comprises a connecting barrel, an ultraviolet water inlet pipe, an ultraviolet water outlet pipe and an ultraviolet lamp tube, the connecting barrel is arranged outside the barrel body, one end of the ultraviolet water inlet pipe is communicated with the barrel body, the other end of the ultraviolet water inlet pipe is communicated with the lower portion of the connecting barrel, the ultraviolet water outlet pipe is communicated with the upper portion of the connecting barrel, the ultraviolet lamp tube is arranged in the middle of the connecting barrel, and the lower end of the connecting barrel is formed with a drain pipe.

[0010] Further, the three-oxygen microorganism module comprises a partition plate, a three-oxygen aeration member, a second filter group and a sewage assembly, the partition plate is arranged between the barrel body and the mechanical filtration module and separates the anaerobic zone, the facultative oxygen zone and the aerobic zone, the three-oxygen aeration member is arranged outside the barrel body and connected with the aerobic zone, the barrel body is formed with a second cushion block, the second filter group is connected with the second cushion block, and the sewage assembly is arranged at the bottom of the barrel body and communicated with the aerobic zone and the anaerobic zone.

[0011] Further, the pollution discharge assembly comprises a pollution collection plate, an outflow pipe and a regulating valve, the pollution collection plate is arranged at the lower part of the barrel body and is connected with the anaerobic area, the facultative oxygen area and the aerobic area, the pollution collection plate is formed with a pollution discharge port, the outflow pipe is communicated with the pollution discharge port, the first end of the regulating valve is communicated with the outflow pipe, and the second end of the regulating valve is communicated with an external pipeline.

[0012] Further, the water distribution groove is provided with a water inflow port, the three-oxygen microorganism module comprises a plurality of hydrophobic plates, a flow interception plate, an oxygen increasing aerator and a plurality of fiber filter groups, each of the hydrophobic plates is arranged between the barrel body and the mechanical filter module, the flow interception plate is fixedly connected with the mechanical filter module, the flow interception plate is arranged below the water inflow port, the oxygen increasing aerator is arranged along the bottom of the barrel body, one end of each of the fiber filter groups is fixedly connected with the bottom of the barrel body, and the other end of each of the fiber filter groups is fixedly connected with the upper part of the barrel body, and the bottom of the barrel body is provided with a dredging device.

[0013] Further, the fiber filter group comprises a first connecting plate, a second connecting plate and a plurality of filter fibers, the first connecting plate is detachably mounted at the top of the barrel body, the second connecting plate is detachably mounted at the bottom of the barrel body, and each of the filter fibers is arranged between the first connecting plate and the second connecting plate.

[0014] Further, a use method of the denitrification and phosphorus removal filter with a three-oxygen micro-ecological environment, the method comprising the following steps:

[0015] S1, connecting and mounting the three-oxygen microorganism module, the mechanical filter module and the ultraviolet module in the barrel body, putting aerobic bacteria into the aerobic area, putting anaerobic bacteria into the anaerobic area and the facultative oxygen area, and putting facultative bacteria into the first filter group;

[0016] S2, adding tail water from the water inlet, forming a first vortex in the filter barrel by the cyclone water inlet pipe, depositing particulate matter and suspended matter at the bottom of the filter barrel, flowing into the filter barrel along the first water inlet cone plate and flowing out from the cyclone elbow to form a second vortex, secondly depositing particulate matter and suspended matter in the tail water, flowing to the bottom of the filter barrel along the cyclone cleaning pipe, and filtering and preliminarily decomposing the aquaculture water and the aquaculture tail water by the facultative bacteria in the first filter group;

[0017] S3, flowing the tail water into the water distribution groove from the water distribution port, and flowing into the aerobic area and the anaerobic area from the connecting groove, gradually filling the aerobic area and the anaerobic area from bottom to top, and decomposing and treating the aquaculture water and the aquaculture tail water by the aerobic bacteria and the anaerobic bacteria respectively;

[0018] S4, the tail water treated by the aerobic zone and the facultative oxygen zone of the anaerobic zone is collected along the flow outlet to the water collecting tank, and flows into the connecting barrel through the ultraviolet water inlet pipe, the aquaculture water and the aquaculture tail water enter from below the connecting barrel and flow out from above the connecting barrel, and the ultraviolet lamp tube sterilizes and disinfects the aquaculture water and the aquaculture tail water by ultraviolet rays;

[0019] S5, the pollutants accumulated in the bottom of the filter barrel are discharged by the blowdown pipe.

[0020] The beneficial effects of the present application are that: due to the cyclone water inlet pipe design of the mechanical filtration module, the secondary cyclone precipitation of the entering tail water is realized, the suspended particles are separated outward by the centrifugal force, and finally deposited at the bottom of the pool, the deposited silt is concentrated at the bottom of the pool, and the silt is removed in the process of periodic cleaning, so as to achieve the purpose of tail water purification, and the first filter group, the first fiber ball and the facultative anaerobic bacteria in the first fiber ball are used to filter and decompose the tail water for pretreatment.

[0021] The three-oxygen microbial module forms the anaerobic zone, the facultative oxygen zone and the aerobic zone between the mechanical filtration module and the barrel body through the equally spaced partition plates, the aerobic zone is connected with the aeration pipe, the aeration pipe is connected with the external three-oxygen generator and the air pump, the mixed air is input into the aerobic zone, the inorganic and organic matters in the water are oxidized, the aerobic bacteria in the aerobic zone decompose the organic small molecular substances into inorganic substances, the anaerobic zone and the facultative oxygen zone decompose the organic large molecular substances in the tail water into organic small molecular substances through the anaerobic bacteria, the ultraviolet module sterilizes and disinfects the tail water treated by the aerobic zone and the facultative oxygen zone of the anaerobic zone by ultraviolet rays, further kills the bacteria, reduces the possibility of breeding diseases, and improves the success rate of breeding. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the embodiment one of the present application;

[0023] Figure 2 is another perspective view of the structural schematic diagram of the embodiment one of the present application;

[0024] Figure 3 is a sectional view of the embodiment one of the present application;

[0025] Figure 4 is Figure 3 is a local enlarged view of part A in the figure;

[0026] Figure 5 is Figure 3 is a local enlarged view of part B in the figure;

[0027] Figure 6 is a structural schematic diagram of the cyclone filtration assembly of the present application;

[0028] Figure 7 is a sectional view of the cyclone filter assembly of the present application;

[0029] Figure 8 is a structural schematic view of the blowdown assembly of embodiment one of the present application;

[0030] Figure 9 is an exploded view of the ultraviolet module of the present application;

[0031] Figure 10 is a sectional view of embodiment two;

[0032] Figure 11 is a top view of the tri-oxygen microbial module of embodiment two of the present application;

[0033] Figure 12 is a top view of the water flow direction of embodiment two of the present application.

[0034] In the figure: 1, barrel body; 11, second pad; 12, water collecting tank; 13, flow outlet; 2, water inlet; 3, mechanical filter module; 31, filter barrel; 311, water distribution tank; 312, water distribution outlet; 32, cyclone filter assembly; 321, cyclone water inlet pipe; 322, first water inlet cone plate; 323, cyclone cone plate; 324, cyclone elbow; 33, first filter group; 34, blowdown pipe; 35, first pad; 36, connecting tank; 4, tri-oxygen microbial module; 41a, partition; 42a, tri-oxygen aeration member; 43a, second filter group; 44a, blowdown assembly; 441a, blowdown plate; 442a, flow-out pipe; 443a, regulating valve; 5, ultraviolet module; 51, connecting barrel; 52, ultraviolet water inlet pipe; 53, ultraviolet water outlet pipe; 54, ultraviolet lamp; 55, drain pipe; 6, anaerobic and facultative oxygen zone; 7, aerobic zone;

[0035] 41b, hydrophobic plate; 42b, intercepting plate; 43b, oxygen-increasing aeration member; 44b, fiber filter group; 45b, dredging member; 46b, filter fiber. DETAILED DESCRIPTION

[0036] Embodiment one

[0037] As Figures 1 to 9As shown, in the embodiment, the application comprises a barrel 1, which is provided with a water inlet 2; a mechanical filtration module 3, which is arranged in the barrel 1 and connected with the water inlet 2, for factory cycle water aquaculture and aquaculture tail water treatment; a tri-oxygen microbial module 4, which is arranged between the mechanical filtration module 3 and the barrel 1 and communicated with the mechanical filtration module 3, the tri-oxygen microbial module 4 is formed with an anaerobic zone and facultative oxygen zone 6 and an aerobic zone 7, for cycle water aquaculture and tail water denitrification and phosphorus removal treatment; an ultraviolet module 5, which is arranged outside the barrel 1, for sterilizing and disinfecting the aquaculture water or the aquaculture tail water, the barrel 1 is in a whole cylindrical shape, which can contain more tail water, the cyclone inlet pipe 321 of the mechanical filtration module 3 is designed to cyclone and precipitate the entering tail water, through the centrifugal force and gravity precipitation in the tail water rotation process, the suspended particulate matters are separated outward under the action of the centrifugal force, and finally deposited at the bottom of the pool, the deposited silt is concentrated at the bottom of the pool, which is removed in the process of periodic cleaning, so as to achieve the purpose of tail water purification, in cooperation with the grating and the first fiber ball of the first filtration group 33 and the facultative oxygen bacteria in the first fiber ball, the tail water is pretreated by filtration and decomposition, the tri-oxygen microbial module 4 forms the anaerobic zone and facultative oxygen zone 6 and the aerobic zone 7 between the mechanical filtration module 3 and the barrel 1 through the equidistantly arranged partition plates 41a, the aerobic zone 7 is partially connected with a tri-oxygen aeration member 42a, the tri-oxygen aeration member 42a is connected with an external tri-oxygen generator and an air pump, the air is mixed and then input into the aerobic zone 7, to oxidize the inorganic and organic matters in the water, the aerobic bacteria in the second fiber ball in the upper middle part decompose the organic small molecule matters into inorganic matters, the anaerobic zone and facultative oxygen zone 6 decomposes the organic large molecule matters in the tail water into organic small molecule matters through the anaerobic bacteria in the second fiber ball, the ultraviolet module 5 performs ultraviolet sterilization and disinfection on the tail water treated in the aerobic zone and the anaerobic zone and facultative oxygen zone 6, to further kill bacteria and reduce the possibility of aquaculture disease occurrence, and improve the success rate of aquaculture.

[0038] In the embodiment, the mechanical filtration module 3 comprises a filtration barrel 31, a cyclone filtration assembly 32, a first filtration group 33, and a sewage pipe 34. The filtration barrel 31 is arranged in the middle of the barrel body 1 and is connected with the water inlet 2. The cyclone filtration assembly 32 is arranged in the middle of the filtration barrel 31 and is located above the water inlet 2. The filtration barrel 31 is formed with a first pad 35 and a connecting groove 36. The first pad 35 is arranged on the inner wall of the filtration barrel 31 and is located above the cyclone filtration assembly 32. The first filtration group 33 is connected with the first pad 35. The connecting groove 36 is arranged on the outer wall of the filtration barrel 31 and is connected with the three-oxygen microorganism module 4. The sewage pipe 34 is arranged at the bottom of the filtration barrel 31 and is in communication with an external pipeline. One or more groups of the first pad 35 are arranged on the inner wall of the filtration barrel 31 to support and limit the first grid. One or more groups of the connecting groove 36 are arranged on the outer wall of the filtration barrel 31 at equal intervals. One end of the connecting groove 36 is in communication with the water distribution groove 311, and the other end of the connecting groove 36 is arranged to be open at the lower part of the aerobic zone 7 or the anaerobic zone 6. The tail water flows from the bottom to the top in the aerobic zone 7 or the anaerobic zone 6, thereby increasing the water flow path and slowing down the water flow speed, and making the nitrification and denitrification processes more sufficient.

[0039] The cyclone filtration assembly 32 is subjected to centrifugal force and gravity sedimentation during the rotation of the tail water. Suspended particles are separated outwardly under the action of the centrifugal force and are finally deposited at the bottom of the pool. The deposited sludge is concentrated at the bottom of the pool and is removed during the periodic cleaning process, thereby achieving the purpose of tail water purification. The lower part of the filtration barrel 31 is formed with a tapered sludge collecting groove with a gradually decreasing diameter from top to bottom. The sewage pipe 34 is arranged at the bottom of the sludge collecting groove and is connected with an external timed sludge pumping mechanism. The sludge accumulated in the tapered sludge collecting groove is pumped out at a regular time, thereby reducing the accumulation of waste slag in the sewage pipe 34, ensuring the sewage effect and water treatment effect, and the first filtration group 33 comprises a first grid and a first fiber ball. The first fiber ball is formed with a dense porous structure and contains facultative bacteria. The facultative bacteria preliminarily decompose and treat the tail water. The first fiber ball can also slow down the water flow speed in the filtration barrel 31, so that the tail water is fully contacted with the facultative bacteria.

[0040] In the embodiment, the cyclone filter assembly 32 comprises a cyclone inlet pipe 321 connected with the water inlet 2, a first water inlet cone plate 322 arranged at the middle part of the filter barrel 31 and above the cyclone inlet pipe 321, a cyclone cone plate 323 arranged above the first water inlet cone plate 322, and a cyclone elbow 324 arranged on the cyclone cone plate 323. The cyclone inlet pipe 321 is in the form of an elbow pipe, is installed at the water inlet end of the water inlet 2 and is inclined downward by 10-15 degrees. The bottom of the first water inlet cone plate 322 is formed with a plurality of water inlet holes. The tail water forming the cyclone enters the space between the first water inlet cone plate 322 and the cyclone cone plate 323 through the water inlet holes. The cyclone elbow 324 is provided with one or more groups. The multiple groups of cyclone elbows 324 are connected on the cyclone cone plate 323 in an anticlockwise direction at equal intervals and are in communication with the space between the first water inlet cone plate 322 and the cyclone cone plate 323. The cyclone tail water flows out of the cyclone elbow 324 from bottom to top. The outflowing tail water moves along the direction of the cyclone elbow 324 and forms a cyclone. The cyclone above the cyclone cone plate 323 performs secondary cyclone deposition of the suspended matter in the tail water. The deposited suspended matter flows out to the bottom of the conical sludge collecting tank through the cyclone cleaning pipe 325. The double-cone structure design cooperates with the inclined cyclone inlet pipe 321 to make the entering tail water form a cyclone in the filter barrel 31. The suspended matter mixed in the tail water is subjected to centrifugal separation. The suspended matter flows to the center of the filter barrel 31 under the action of the cyclone and is deposited at the bottom of the tank. The particulate matter and the suspended matter mixed in the tail water are discharged at a regular time in cooperation with the discharge pipe, thereby improving the filtration efficiency and the water treatment effect of the subsequent tail water treatment.

[0041] In the embodiment, the filter barrel 31 is provided with a water distribution groove 311 and a water distribution port 312. The water distribution groove 311 is arranged along the upper part of the filter barrel 31 in a circumferential direction. The water distribution port 312 is arranged at the upper edge of the filter barrel 31 at equal intervals. The connecting groove 36 is in communication with the water distribution groove 311. The water distribution port 312 is in the form of a V-shaped structure and is arranged at the upper edge of the filter barrel 31 at equal intervals. The tail water accumulates from bottom to top and overflows into the water distribution groove 311 through the water distribution port 312. The lower part of the water distribution groove 311 is in communication with each group of connecting grooves 36. The tail water enters the aerobic zone 7 and the anaerobic zone and facultative oxygen zone 6 through the connecting grooves 36.

[0042] In the embodiment, the tri-oxygen microbial module 4 comprises a partition plate 41a, a tri-oxygen aerator 42a, a second filter group 43a, and a sewage discharge assembly 44a. The partition plate 41a is arranged between the barrel 1 and the mechanical filter module 3, and separates the anaerobic and facultative oxygen zone 6 and the aerobic zone 7. The tri-oxygen aerator 42a is arranged outside the barrel 1 and connected to the aerobic zone 7. The barrel 1 is formed with a second pad 11. The second filter group 43a is connected to the second pad 11. The sewage discharge assembly 44a is arranged at the bottom of the barrel 1 and connected to the aerobic zone 7 and the anaerobic and facultative oxygen zone 6. The partition plate 41a is arranged in one or more groups. The partition plates 41a arranged in multiple groups are connected to the inner wall of the filter barrel 31 and the barrel 1 at equal intervals. The two partition plates 41a form a separate reaction zone, so that the device can simultaneously perform nitrification and denitrification reactions, reduce the ammonia nitrogen content in the water during water circulation, and improve the treatment efficiency and effect of harmful substances in wastewater. The treated water has little harmful substance residue and can be reused for water circulation, saving water resources. The tri-oxygen aerator 42a is connected to an external tri-oxygen generator and an air pump. The mixed air is pumped into the aerobic zone 7 to form dense bubbles, oxidizing inorganic and organic substances in the water. The second pad 11 is arranged in one or more groups. The second pads 11 arranged in multiple groups are arranged at equal intervals along the inner wall of the barrel 1 and are used to limit and fix the second grid. The second pad 11 gradually increases from top to bottom.

[0043] In the embodiment, the sewage discharge assembly 44a comprises a sewage collection plate 441a, an outflow pipe 442a, and a regulating valve 443a. The sewage collection plate 441a is arranged at the lower part of the barrel 1 and connected to the anaerobic and facultative oxygen zone 6 and the aerobic zone 7. The sewage collection plate 441a is formed with a sewage discharge port 444a. The outflow pipe 442a is connected to the sewage discharge port 444a. The first end of the regulating valve 443a is connected to the outflow pipe 442a. The second end of the regulating valve 443a is connected to an external pipeline. The sewage collection plate 441a is connected to the partition plate 41a and cooperates with the cavity formed by the filter barrel 31 and the barrel 1. The sewage collection plate 441a is used to collect the sludge and dirt deposited in the cavity. The regulating valve 443a is opened at regular intervals to discharge the sludge and dirt accumulated on the sewage collection plate 441a, improving the filtration efficiency and water treatment effect of subsequent tail water treatment.

[0044] In the embodiment, the second filter group 43a comprises a second grid and a second fiber ball, the second grid is supported by the second pad 11, the second fiber ball floats below the second grid, the second fiber ball on the side of the aerobic zone 7 is provided with aerobic bacteria, the second fiber ball on the side of the anaerobic zone 6 is provided with anaerobic bacteria, the second fiber ball has a dense porous structure, and the second fiber ball can also slow down the water flow speed, so that the aquaculture tail water fully contacts and reacts with the aerobic bacteria or the anaerobic bacteria, and the treatment efficiency and treatment effect of harmful substances in the wastewater are improved.

[0045] In the aerobic zone 7 of the first embodiment, 80% of the outer layer of the second fiber ball produces aerobic bacteria for reaction with the aquaculture tail water, and 20% of the inner layer of the second fiber ball produces facultative bacteria, the aerobic bacteria and the facultative bacteria in the second fiber ball in the aerobic zone can be naturally produced by the tail water treatment environment or put in advance by the staff.

[0046] In the mechanical filter assembly of the first embodiment, 80% of the outer layer of the first fiber ball produces facultative bacteria for reaction with the aquaculture tail water, and 20% of the inner layer of the second fiber ball produces anaerobic bacteria, the facultative bacteria in the first fiber ball can be naturally produced by the tail water treatment environment or put in advance by the staff.

[0047] In the anaerobic zone facultative oxygen zone of the first embodiment, the second fiber ball produces anaerobic bacteria, and the anaerobic bacteria in the anaerobic zone can be naturally produced by the tail water treatment environment or put in advance by the staff.

[0048] In the embodiment, the ultraviolet module 5 comprises a connecting barrel 51, an ultraviolet water inlet pipe 52, an ultraviolet water outlet pipe 53, and an ultraviolet lamp 54, the connecting barrel 51 is arranged on the outside of the barrel body 1, one end of the ultraviolet water inlet pipe 52 is communicated with the barrel body 1, the other end of the ultraviolet water inlet pipe 52 is communicated with the lower part of the connecting barrel 51, the ultraviolet water outlet pipe 53 is communicated with the upper part of the connecting barrel 51, the ultraviolet lamp 54 is arranged in the middle part of the connecting barrel 51, and the lower end of the connecting barrel 51 is formed with a drain pipe 55, the water flow in the connecting barrel 51 enters from bottom to top, the water flow path is long, the ultraviolet lamp 54 irradiation disinfection time is prolonged, the ultraviolet disinfection effect is improved, the treated water body is disinfected by ultraviolet rays again, bacteria and viruses remaining in the water body can be removed, and the purification effect of the water body is further improved.

[0049] In the embodiment, the upper part of the barrel 1 is formed with a water collecting groove 12, the inner side of the water collecting groove 12 is provided with a flow outlet 13, the flow outlet 13 communicates with the tri-oxygen microorganism module 4, the ultraviolet module 5 communicates with the water collecting groove 12, the flow outlet 13 is in a V-shaped form, after the aquaculture water is treated in the aerobic zone 7 or the anaerobic zone 6, the aquaculture water flows along the flow outlet 13 into the water collecting groove 12 and then flows along the water collecting groove 12 to the ultraviolet water inlet pipe 52.

[0050] Embodiment two

[0051] As shown in Figure 10 , Figure 11 and Figure 12 , in the embodiment, except that the tri-oxygen microorganism module 4 is different from that in embodiment one, the rest of the technical features are the same as those in embodiment one.

[0052] In the embodiment, the water distributing groove 311 is provided with a water flowing outlet, the tri-oxygen microorganism module 4 comprises a plurality of hydrophobic plates 41b, a flow interception plate 42b, an oxygen increasing aeration member 43b and a plurality of fiber filter groups 44b, each of the hydrophobic plates 41b is arranged between the barrel 1 and the mechanical filter module 3, the flow interception plate 42b is fixedly connected with the mechanical filter module 3, the flow interception plate 42b is arranged below the water flowing outlet, the oxygen increasing aeration member 43b is arranged along the bottom of the barrel 1, one end of each of the fiber filter groups 44b is fixedly connected with the bottom of the barrel 1, the other end of each of the fiber filter groups 44b is fixedly connected with the upper part of the barrel 1, the bottom of the barrel 1 is provided with a dredging member 45b, each of the hydrophobic plates 41b is provided with a plurality of hydrophobic holes through which water flows, the flow interception plate 42b is a plate without holes, the upper end of the flow interception plate 42b is formed with a water outlet through which water flows out to the water collecting groove 12, the oxygen increasing aeration member 43b arranged along the bottom of the barrel 1 is connected with the outside, and an external tri-oxygen generator and an air pump are connected with the outside, air is mixed and then enters to make the area close to the outer wall of the barrel 1 rich in oxygen to form the aerobic zone 7, the area close to the outer wall of the mechanical filter module 3 lacks oxygen to form the anaerobic zone 6, and the area between the aerobic zone 7 and the anaerobic zone 6 is the facultative anaerobic zone, water bodies enter into the barrel 1 along the water flowing holes, and the water bodies are pushed to pass through the hydrophobic plates 41b one by one under the action of the gravity difference to form unidirectional water flow, the fiber filter groups 44b arranged between the barrel 1 and the filter assembly 3 have the effect of intercepting water flow and reducing flow speed, at the same time, the area close to the outer wall of the barrel 1 forms the aerobic zone 7, and the area close to the outer wall of the filter assembly 3 forms the anaerobic zone, so that the aerobic bacteria and the anaerobic bacteria fully react with the water bodies.

[0053] The aeration pipe of the embodiment is arranged along the outer wall of the barrel body 1, and the bubbles generated by aeration drive the water body to move upward. Since a negative pressure space is formed below the aeration pipe during the upward movement of the water flow, the negative pressure space is easy to adsorb and accumulate pollutants. The aeration pipe arranged along the outer wall is not easy to accumulate, and part of the pollutants accumulated flow into the lower pollutant discharge port along the inclined surface of the bottom of the barrel body 1, so that the structure is simple and the cleaning frequency of the pollutants at the bottom is reduced.

[0054] In the embodiment, the fiber filter group 44b includes a first connecting plate, a second connecting plate and a plurality of filter fibers 46b. The first connecting plate is detachably mounted at the top of the barrel body 1, and the second connecting plate is detachably mounted at the bottom of the barrel body 1. Each filter fiber 46b is arranged between the first connecting plate and the second connecting plate. The filter fiber 46b is a fiber bundle, and the porous structure formed by the filter fiber 46b can effectively block the water flow and reduce the water flow speed, so that the aerobic bacteria and anaerobic bacteria attached to the filter fiber 46b can fully undergo nitrification and denitrification reactions with the water body, thereby achieving the effect of water body denitrification and phosphorus removal purification.

[0055] The use method of the denitrification and phosphorus removal filter with a three-oxygen micro-ecological environment includes the following steps:

[0056] S1, the three-oxygen microbial module 4, the mechanical filter module 3 and the ultraviolet module 5 are connected and installed in the barrel body 1, the aerobic zone 7 is put into aerobic bacteria, the anaerobic zone and the facultative oxygen zone 6 are put into anaerobic bacteria, and the first filter group 33 is put into facultative bacteria;

[0057] S2, tail water is added from the water inlet 2, the cyclone inlet pipe 321 causes the tail water to form a first cyclone in the filter barrel 31, impurities are deposited at the bottom of the filter barrel 31, the tail water flows into the filter barrel 31 from the first water cone plate 322 and flows out from the cyclone elbow 324, forming a second vortex, the second vortex secondarily deposits impurities in the tail water, and flows to the bottom of the filter barrel 31 along the cyclone cleaning pipe 325. The first filter group 33 filters and preliminarily decomposes the aquaculture water and the aquaculture tail water through the facultative bacteria;

[0058] S3, the tail water flows into the water distribution tank 311 from the water distribution port 312, and flows into the aerobic zone 7 and the anaerobic zone and facultative oxygen zone 6 along the connecting groove 36. The tail water gradually fills the aerobic zone 7 and the anaerobic zone and facultative oxygen zone 6 from bottom to top, and the aerobic bacteria and the anaerobic bacteria respectively decompose and treat the aquaculture water and the aquaculture tail water;

[0059] S4, the effluent water treated by the aerobic zone 7 and the anaerobic zone facultative oxygen zone 6 is collected along the flow outlet 13 to the water collecting tank 12, and flows into the connecting barrel 51 through the ultraviolet water inlet pipe 52, the aquaculture water and the aquaculture effluent water enter from below the connecting barrel 51 and flow out from above the connecting barrel 51, the ultraviolet lamp 54 sterilizes and disinfects the aquaculture water and the aquaculture effluent water by ultraviolet rays;

[0060] S5, the pollutants accumulated in the bottom of the filter barrel 31 are discharged by the regular cleaning of the drain pipe 34.

[0061] Although the embodiments of the present application are described in practical schemes, they do not constitute a limitation to the meaning of the present application, and modifications to the embodiments thereof and combinations with other schemes according to the present specification are obvious to those skilled in the art.

Claims

1. A nitrogen and phosphorus removal filter with an ozone-rich micro-ecological environment, characterized in that: include A barrel body, wherein the barrel body is provided with a water inlet; A mechanical filtration module is installed in the tank and connected to the water inlet, and is used for factory-scale recirculating aquaculture and aquaculture wastewater treatment; The ozone microbial module is located between the mechanical filtration module and the tank, and is connected to the mechanical filtration module. The ozone microbial module forms an anaerobic zone, a facultative aerobic zone and an aerobic zone, which fully undergo nitrification and denitrification reactions for use in recirculating aquaculture and nitrogen and phosphorus removal from aquaculture wastewater. An ultraviolet module is located on the outside of the tank and is used to sterilize and disinfect the aquaculture water or aquaculture wastewater. The mechanical filtration module includes a filter barrel, a cyclone filtration assembly, a first filter group, and a drain pipe. The filter barrel is located in the middle of the barrel body and connected to the water inlet. The cyclone filtration assembly is located in the middle of the filter barrel and above the water inlet. The filter barrel has a first pad and a connecting groove. The first pad is located on the inner wall of the filter barrel and above the cyclone filtration assembly. The first filter group is connected to the first pad. The connecting groove is located on the outside of the filter barrel and connected to the ozone microbial module. The drain pipe is located at the bottom of the filter barrel and is connected to an external pipeline. The cyclone filter assembly includes a cyclone inlet pipe, a first inlet cone plate, a cyclone cone plate, and a cyclone bend. The cyclone inlet pipe is connected to the inlet. The first inlet cone plate is located in the middle of the filter barrel and above the cyclone inlet pipe. The cyclone cone plate is located above the first inlet cone plate and has a cyclone cleaning pipe that passes through the bottom of the first inlet cone plate. The cyclone bend is located on the cyclone cone plate. The cyclone inlet pipe has a bent pipe structure and is installed at the inlet end of the inlet 2 and inclined downwards at - degrees. The bottom of the first inlet cone plate has multiple inlet holes. The tailwater forming the cyclone enters between the first inlet cone plate and the cyclone cone plate through the inlet holes. One or more sets of cyclone bends are provided. The multiple sets of cyclone bends are connected to the cyclone cone plate at equal intervals in a counterclockwise direction and communicate with the space between the first inlet cone plate and the cyclone cone plate.

2. The nitrogen and phosphorus removal filter with a tri-ozone micro-ecological environment according to claim 1, characterized in that: The filter barrel is provided with a water distribution trough and a water distribution outlet. The water distribution trough is arranged along the upper circumference of the filter barrel, and the water distribution outlets are evenly spaced along the upper edge of the filter barrel. The connecting groove is connected to the water distribution trough.

3. A nitrogen and phosphorus removal filter with an ozone micro-ecological environment according to claim 1, characterized in that: The ultraviolet module includes a connecting bucket, an ultraviolet water inlet pipe, an ultraviolet water outlet pipe, and an ultraviolet lamp. The connecting bucket is located on the outside of the bucket body. One end of the ultraviolet water inlet pipe is connected to the bucket body, and the other end of the ultraviolet water inlet pipe is connected to the lower part of the connecting bucket. The ultraviolet water outlet pipe is connected to the upper part of the connecting bucket. The ultraviolet lamp is located in the middle of the connecting bucket, and a drain pipe is formed at the lower end of the connecting bucket.

4. A nitrogen and phosphorus removal filter with an ozone micro-ecological environment according to claim 1, characterized in that: The ozone microbial module includes a partition, an ozone aeration element, a second filter group, and a sewage discharge component. The partition is disposed between the tank body and the mechanical filter module, and forms the anaerobic zone, the facultative oxygen zone, and the aerobic zone. The ozone aeration element is disposed on the outside of the tank body and connected to the aerobic zone. The tank body has a second pad, and the second filter group is connected to the second pad. The sewage discharge component is disposed at the bottom of the tank body and communicates with the aerobic zone and the anaerobic / facultative oxygen zone.

5. A nitrogen and phosphorus removal filter with an ozone micro-ecological environment according to claim 4, characterized in that: The sewage discharge assembly includes a sewage collection plate, an outlet pipe, and a regulating valve. The sewage collection plate is located at the bottom of the tank and is connected to the anaerobic zone, the facultative aerobic zone, and the aerobic zone. The sewage collection plate forms a sewage discharge port. The outlet pipe is connected to the sewage discharge port. The first end of the regulating valve is connected to the outlet pipe, and the second end of the regulating valve is connected to an external pipeline.

6. A nitrogen and phosphorus removal filter with an ozone micro-ecological environment according to claim 2, characterized in that: The water distribution tank is equipped with a water outlet. The ozone microbial module includes several hydrophobic plates, intercepting plates, oxygenation aeration components, and several fiber filter groups. Each hydrophobic plate is disposed between the tank body and the mechanical filter module. The intercepting plate is fixedly connected to the mechanical filter module and is disposed below the water outlet. The oxygenation aeration components are disposed along the bottom of the tank body. One end of each fiber filter group is fixedly connected to the bottom of the tank body, and the other end of each fiber filter group is fixedly connected to the upper part of the tank body. A sludge removal component is disposed at the bottom of the tank body.

7. A nitrogen and phosphorus removal filter with an ozone micro-ecological environment according to claim 6, characterized in that: The fiber filter assembly includes a first connecting plate, a second connecting plate, and a plurality of filter fibers. The first connecting plate is detachably installed on the top of the barrel, and the second connecting plate is detachably installed on the bottom of the barrel. Each filter fiber is disposed between the first connecting plate and the second connecting plate.

8. A method of using a denitrification and phosphorus removal filter with an ozone-rich microecological environment as described in claims 1-3, characterized in that, The method includes the following steps: S1. Connect and install the ozone microbial module, the mechanical filtration module and the ultraviolet module in the barrel. Place aerobic bacteria in the aerobic zone, and anaerobic bacteria in the anaerobic and facultative anaerobic zones. Place facultative anaerobic bacteria in the first filtration group. S2. Add tailwater from the inlet. The swirling inlet pipe causes the tailwater to form a first swirling flow in the filter bucket. Impurities are deposited at the bottom of the filter bucket. The tailwater flows in along the first inlet cone and out from the swirling bend, forming a second vortex. The second vortex causes secondary deposition of particulate matter and suspended matter in the tailwater. The tailwater flows along the swirling cleaning pipe to the bottom of the filter bucket. The first filter group filters the water and preliminarily decomposes the aquaculture water and aquaculture tailwater through facultative anaerobic bacteria. S3. The tailwater flows from the water outlet into the water distribution trough and enters the aerobic zone and the anaerobic facultative oxygen zone along the connecting trough. The tailwater gradually fills the aerobic zone and the anaerobic facultative oxygen zone from bottom to top. Aerobic bacteria and anaerobic bacteria decompose the aquaculture water and aquaculture tailwater respectively. S4. The wastewater treated by the aerobic zone and the anaerobic / facultative anaerobic zone is collected in the collection tank along the outlet and flows into the connecting tank through the ultraviolet inlet pipe. The aquaculture water and aquaculture wastewater enter from the bottom of the connecting tank and flow out from the top of the connecting tank. The ultraviolet lamp tube performs ultraviolet sterilization and disinfection on the aquaculture water and aquaculture wastewater. S5. Pollutants accumulated at the bottom of the filter bucket are periodically cleaned and discharged through the drain pipe.

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