CN113526795A - Treatment device and treatment method for improving aquaculture water quality recycling - Google Patents
Treatment device and treatment method for improving aquaculture water quality recycling Download PDFInfo
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- CN113526795A CN113526795A CN202110850682.5A CN202110850682A CN113526795A CN 113526795 A CN113526795 A CN 113526795A CN 202110850682 A CN202110850682 A CN 202110850682A CN 113526795 A CN113526795 A CN 113526795A
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
Abstract
The invention discloses a treatment device and a treatment method for improving the water recycling of aquaculture, which comprises a water storage tank, a biological filter tower and a pumping mechanism, wherein the water storage tank is provided with a sand filter screen, the interior of the biological filter tower is respectively provided with a water inlet main pipe, a water outlet main pipe, a membrane ditch assembly part, a purification water tank and a middle cache tank with a clear water area and a solid deposition area, at least one seepage digestion bed with modified filter materials is arranged above the purification water tank, and a biological filter tank is also arranged at the bottom of the purification water tank.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a treatment device and a treatment method for improving the water quality recycling of aquaculture.
Background
At present, most of the modes of the domestic aquaculture industry are a mode of taking water and culturing in a direct discharge mode, so that water environment pollution and aquatic diseases are caused by the culture frequently, the water pollution problem of the aquaculture industry is serious day by day, the water quality requirement of the growth of fishes and shrimps cannot be met, residual bait, excrement and corpses eaten by the fishes and the shrimps are deposited at the bottom of a pond to generate a large amount of harmful substances, ammonia and hydrogen sulfide, and the survival rate of the fishes and the shrimps is reduced. The system has the advantages of high culture density, controllable culture environment, small damage to ecological environment, fast growth speed of cultured organisms and the like, can reduce tail water discharge, improve the circulation utilization rate of culture water, improve the culture water quality in the original pond and reduce pathogen introduction, creates a healthy growth environment for fishes and shrimps, improves the survival rate of the fishes and the shrimps, shortens the growth period, and creates better culture efficiency and economic benefits for farmers.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a treatment device and a treatment method for improving the water recycling of aquaculture, which can effectively solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a treatment device for improving the water recycling of aquaculture comprises a water storage tank, a biological filter tower and a pumping mechanism, wherein the water storage tank is provided with a sand filter screen, the interior of the biological filter tower is respectively provided with a water inlet main pipe, a water outlet main pipe, a membrane ditch assembly part, a purification water tank and a middle cache tank with a clean water area and a solid deposition area, at least one layer of seepage digestion bed with modified filter materials is arranged above the purification water tank, and the bottom of the purification water tank is also provided with a biological filter tank;
the export of tank with the house steward that intakes connects, the house steward with middle buffer pool is connected, the house steward that goes out connects the bed is digested in the interlayer seepage, just the bed is digested in the interlayer seepage is located the top in purified water pond, the house steward with all be equipped with a plurality of spiral nozzle on the house steward, membrane ditch built-up member is including nanometer ceramic carrier biomembrane, nanometer ceramic carrier biomembrane is established ties and is located side by side the below of house steward that intakes, just nanometer ceramic carrier biomembrane is vertical to locating to the book the top of biological filtration tower.
Particularly, the sand filter screen is arranged above the water storage tank.
Particularly, the spiral nozzles are uniformly distributed along the length direction of the water inlet main pipe and the water outlet main pipe, the spiral nozzles of the water inlet main pipe are vertical to the nano ceramic carrier biomembrane, and the spiral nozzles of the water outlet main pipe are vertical to the percolation digestion bed.
Particularly, the middle buffer pool is internally provided with a biomembrane removing filter screen, the biomembrane removing filter screen is parallel to the nanometer ceramic carrier biomembrane, and the biological removing filter screen is also provided with a scraper.
Particularly, an air channel of 8-10cm is formed between the seepage digestion beds, and the thickness of the modified filter material on the seepage digestion beds is 8-10 cm.
A treatment method for improving the water recycling of aquaculture comprises the following steps:
step S1: culturing microorganisms of a nano ceramic carrier biomembrane, pumping and delivering mixed liquid of fish and shrimp feces and residual baits in a culture pond to a water storage pond through a pumping and delivering mechanism to serve as nutrient solution, wherein a sand filter screen is used for filtering to reduce solid organic matters and residual baits in culture wastewater, the filtered wastewater is sprayed to a nano ceramic membrane through a spiral nozzle of a water inlet main pipe, the nutrient solution is uniformly sprayed onto the nano ceramic carrier biomembrane to provide nutrients for the growth of the microorganisms, so that the microorganisms simultaneously carry out aerobic and anaerobic reactions in a biological filter tower, polyacrylamide and antibiotics are added into the water storage pond for acclimation, and then a stable nitrification-aerobic denitrification microbial membrane is formed on the nano ceramic carrier, the culture period of the nitrification-aerobic denitrification microbial membrane is 15 days, and when old biomembranes are peeled off, the nitrification-aerobic denitrification microbial membrane falls back to a biomembrane removing filter screen in a middle buffer pond, the waste water is discharged by a scraper on the filter screen at regular time;
step S2: the method comprises the following steps of (1) carrying out microbial culture on a seepage digestion bed, pumping a mixed solution of fish and shrimp feces and residual baits in a culture pond to a middle cache pond through a pumping mechanism to serve as a nutrient solution, spraying the nutrient solution into the seepage digestion bed through a spiral nozzle in a water outlet main pipe, uniformly spraying the nutrient solution onto the seepage digestion bed, paving a modified filter material on the seepage digestion bed to provide nutrients for microbial growth, paving each layer of the filter material with the thickness of 8-10cm generally, and spacing each layer of the seepage digestion bed by 8-10cm for culturing nitrobacteria and aerobic denitrifying microorganisms on the seepage digestion bed, so that stable nitrobacteria and an aerobic denitrifying microbial film are formed on the modified filter material in the seepage digestion bed, wherein the culture period of the aerobic denitrifying microbial film is 15 days;
step S3: purifying and recycling aquaculture water, removing ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water by a nitrification-aerobic denitrification microbial membrane of a nano ceramic carrier biological membrane, degrading the concentration of the ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water, storing the aquaculture water in a middle cache tank after primary purification is finished, finally purifying the aquaculture water in the middle cache tank by the aerobic denitrification microbial membrane of a seepage digestion bed, increasing dissolved oxygen in the aquaculture water and further removing organic matters, the ammonia nitrogen and the nitrite nitrogen by the alternate action of an air fault reoxygenation area and a filter material filling seepage denitrification area among multiple layers of filter materials on the seepage digestion bed, wherein an air channel is formed between the two interlayer seepage digestion beds for naturally supplying oxygen to the aquaculture water, increasing the oxygen concentration of a water body, obtaining high-quality aquaculture water, and conveying the aquaculture water to a purification water tank, the culture water in the purified water pool is sent to the culture pool for use, the culture water discharged into the culture pool in the purified water pool can be reused, and the culture water can be recycled after being introduced into the device for purification treatment after use.
Specifically, the nitrifying bacteria in steps S1 and S2 are nitrifying bacteria or nitrifying bacteria, and the aerobic denitrifying microorganism is one or more of alcaligenes and paracoccus.
In particular, the common antibiotic for aquaculture in step S1 is sulfacha solution or oxytetracycline or florfenicol or ofloxacin.
Compared with the prior art, the invention has the beneficial effects that:
according to the recycling treatment device and the treatment method for improving the aquaculture water quality, disclosed by the invention, the concentration of ammonia nitrogen, nitrite nitrogen and carbon dioxide in the water body can be effectively reduced by the biological filter tower arranged in the recycling treatment device and the treatment method for improving the aquaculture water quality, and meanwhile, the aquaculture water body is oxygenated by adopting a unique oxygenation mode, so that the water quality and the service cycle of the aquaculture water are improved, and the use amount of the aquaculture water and the sewage discharge amount are reduced. The system and the process are simple, the occupied area is small, chemical agents are not needed, and the comprehensive breeding cost is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a treatment apparatus and a treatment method for improving the water recycling of aquaculture.
Reference numbers in the figures:
1. a sand filter screen; 2. a water storage tank; 3. a water inlet main pipe; 4. a spiral nozzle; 5. a nano ceramic carrier biofilm; 6. a biofilm removal filter screen; 7. an intermediate cache pool; 8. a water outlet main pipe; 9. a percolation digestion bed; 10. purifying the water tank; 11. a biological filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention provides a treatment device for improving the water quality recycling of aquaculture, which comprises a water storage tank 2, a biological filter tower and a pumping mechanism, wherein the water storage tank 2 is provided with a sand filter screen 1, the interior of the biological filter tower is respectively provided with a water inlet main pipe 3, a water outlet main pipe 8, a membrane ditch assembly part, a purified water tank 10 and a middle cache tank 7 with a clean water area and a solid deposition area, at least one layer of seepage digestion bed 9 with modified filter materials is arranged above the purified water tank 10, the bottom of the purified water tank 10 is also provided with a biological filter tank 11, the outlet of the water storage tank 2 is connected with the water inlet main pipe 3, the water outlet main pipe 8 is connected with the middle cache tank 7, the water outlet main pipe 8 is connected with the interlayer seepage digestion bed 9, the interlayer seepage digestion bed 9 is arranged above the purified water tank 10, the water inlet main pipe 3 and the water outlet main pipe 8 are both provided with a plurality of spiral nozzles 4, the membrane ditch assembly part comprises a nano ceramic carrier biological membrane 5, the nano ceramic carrier biological membrane 5 is connected in series and arranged below the water inlet main pipe 3 side by side, the nano ceramic carrier biological membrane 5 is vertically folded and arranged above the biological filter tower, and the outlet of the water storage tank 2 is connected with a water inlet and outlet main pipe 8 in the biological filter tower; the nano ceramic carriers which are connected in series and arranged in parallel in the biological filter tower are folded and hung on the upper part of the biological filter tower, and wastewater in the water inlet header pipe 3 is uniformly sprayed onto a biological film on the nano ceramic carriers through a spiral nozzle on a pipeline to provide nutrients for the growth of microorganisms, so that the microorganisms can simultaneously carry out aerobic and anaerobic reactions in the filter tower, the concentrations of ammonia nitrogen, nitrite nitrogen and carbon dioxide in water can be rapidly degraded, and the oxygen concentration of a water body can be increased; and a middle buffer tank 7 with a grid filter screen is arranged below the nano ceramic carrier, and an old biological membrane is peeled off and returns to the biological membrane removing filter screen 6 to be discharged by a scraper on the filter screen at regular time. The export of middle buffer pool 7 links to each other with outlet header pipe 8, seepage flow digestion bed 9 sets up in purification tank 10 top, and the waste water in the outlet header pipe 8 permeates the spiral nozzle on the pipeline and evenly sprays to the seepage flow digestion bed 9 of at least one deck, and waste water sends into purification tank 10 after the filter material adsorption purification on the seepage flow digestion bed 9, and the water in the purification tank 10 finally discharges biological filter tower and returns to breeding the pond. The oxygen content of the water in the purified water tank 10 is above 4mg/L, the ammonia nitrogen content is as low as 0.05mg/L, and the PH is controlled at about 8, so that the water quality requirement of aquaculture is met.
It is further explained that, grit filter screen 1 locates the top of tank 2, spiral nozzle 4 is followed inlet manifold 3, outlet manifold 8's length direction evenly distributed, inlet manifold 3's spiral nozzle 4 with nanometer ceramic carrier biomembrane 5 is perpendicular, outlet manifold 8's spiral nozzle 4 with infiltration digestion bed 9 is perpendicular, the inside biomembrane that is equipped with of middle buffer pool 7 clears away filter screen 6, biomembrane is clear away filter screen 6 with nanometer ceramic carrier biomembrane 5 is parallel, the biological filter screen of clearing away still is equipped with the scraper blade, form 8-10 cm's air channel between the infiltration digestion bed 9, the thickness of the modified filter material on the infiltration digestion bed 9 is 8-10 cm.
A treatment method for improving the water recycling of aquaculture comprises the following steps:
step S1: culturing microorganisms of a nano ceramic carrier biomembrane, pumping and delivering mixed liquid of fish and shrimp feces and residual baits in a culture pond to a water storage pond through a pumping and delivering mechanism to serve as nutrient solution, wherein a sand filter screen is used for filtering to reduce solid organic matters and residual baits in culture wastewater, the filtered wastewater is sprayed to a nano ceramic membrane through a spiral nozzle of a water inlet main pipe, the nutrient solution is uniformly sprayed onto the nano ceramic carrier biomembrane to provide nutrients for the growth of the microorganisms, so that the microorganisms simultaneously carry out aerobic and anaerobic reactions in a biological filter tower, polyacrylamide and antibiotics are added into the water storage pond for acclimation, and then a stable nitrification-aerobic denitrification microbial membrane is formed on the nano ceramic carrier, the culture period of the nitrification-aerobic denitrification microbial membrane is 15 days, and when old biomembranes are peeled off, the nitrification-aerobic denitrification microbial membrane falls back to a biomembrane removing filter screen in a middle buffer pond, the waste water is discharged by a scraper on the filter screen at regular time;
step S2: and (2) carrying out microbial culture on the seepage digestion bed, pumping a mixed solution of fish and shrimp feces and residual baits in the culture pond to a middle cache pond through a pumping mechanism to serve as a nutrient solution, spraying the nutrient solution into the seepage digestion bed through a spiral nozzle in a water outlet main pipe, uniformly spraying the nutrient solution onto the seepage digestion bed, paving a modified filter material on the seepage digestion bed to provide nutrients for microbial growth, paving each layer of the filter material with the thickness of 8-10cm generally, and spacing each layer of the seepage digestion bed by 8-10cm for culturing nitrobacteria and aerobic denitrifying microorganisms on the seepage digestion bed, and further forming stable nitrobacteria and an aerobic denitrifying microbial film on the modified filter material in the seepage digestion bed, wherein the culture period of the aerobic denitrifying microbial film is 15 days.
Step S3: purifying and recycling aquaculture water, removing ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water by a nitrification-aerobic denitrification microbial membrane of a nano ceramic carrier biological membrane, degrading the concentration of the ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water, storing the aquaculture water in a middle cache tank after primary purification is finished, finally purifying the aquaculture water in the middle cache tank by the aerobic denitrification microbial membrane of a seepage digestion bed, increasing dissolved oxygen in the aquaculture water and further removing organic matters, the ammonia nitrogen and the nitrite nitrogen by the alternate action of an air fault reoxygenation area and a filter material filling seepage denitrification area among multiple layers of filter materials on the seepage digestion bed, wherein an air channel is formed between the two interlayer seepage digestion beds for naturally supplying oxygen to the aquaculture water, increasing the oxygen concentration of a water body, obtaining high-quality aquaculture water, and conveying the aquaculture water to a purification water tank, the culture water in the purified water pool is sent to the culture pool for use, the culture water discharged into the culture pool in the purified water pool can be reused, and can be recycled after being introduced into the device for purification treatment after use.
The nitrifying bacteria in the steps S1 and S2 are nitrite bacteria or nitrate bacteria, and the aerobic denitrifying microorganism is one or more of Alcaligenes and Paracoccus.
In step S1, the common antibiotic for aquaculture is sulfacha-type complex or oxytetracycline, florfenicol, or ofloxacin.
By utilizing the recycling treatment device and the treatment method, the production speed of the prawns in the culture pond is faster and is about 0.16g/d, the culture period is shortened by 15 days, the content of the nitrite nitrogen in the culture effluent is reduced to 0.05mg/L, the removal rate of the nitrogenous pollutants can be up to more than 45%, the dissolved oxygen content is more than 4mg/L, the PH is controlled to be about 8, the growth requirements of aquaculture animals are completely met, and the recycling of the culture water is improved so as to realize the deep treatment and recycling of the culture water.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides an improve aquaculture water quality cyclic utilization processing apparatus which characterized in that: the device comprises a water storage tank, a biological filter tower and a pumping mechanism, wherein the water storage tank is provided with a sand filter screen, the interior of the biological filter tower is respectively provided with a water inlet main pipe, a water outlet main pipe, a membrane ditch assembly part, a purification water tank and a middle cache tank with a clean water area and a solid deposition area, at least one layer of seepage digestion bed with modified filter materials is arranged above the purification water tank, and the bottom of the purification water tank is also provided with a biological filter tank;
the export of tank with the house steward that intakes connects, the house steward with middle buffer pool is connected, the house steward that goes out connects the bed is digested in the interlayer seepage, just the bed is digested in the interlayer seepage is located the top in purified water pond, the house steward with all be equipped with a plurality of spiral nozzle on the house steward, membrane ditch built-up member is including nanometer ceramic carrier biomembrane, nanometer ceramic carrier biomembrane is established ties and is located side by side the below of house steward that intakes, just nanometer ceramic carrier biomembrane is vertical to locating to the book the top of biological filtration tower.
2. The treatment device for improving the water quality recycling of aquaculture according to claim 1, wherein: the gravel filter screen is arranged above the water storage tank.
3. The treatment device for improving the water quality recycling of aquaculture according to claim 1, wherein: the spiral nozzles are uniformly distributed along the length directions of the water inlet main pipe and the water outlet main pipe, the spiral nozzles of the water inlet main pipe are perpendicular to the nano ceramic carrier biomembrane, and the spiral nozzles of the water outlet main pipe are perpendicular to the percolation digestion bed.
4. The treatment device for improving the water quality recycling of aquaculture according to claim 1, wherein: the inside biomembrane that is equipped with of middle buffer memory pond is clear away the filter screen, the biomembrane clear away the filter screen with the nanometer ceramic carrier biomembrane is parallel, the biology is clear away the filter screen and is still equipped with the scraper blade.
5. The treatment device for improving the water quality recycling of aquaculture according to claim 1, wherein: an air channel of 8-10cm is formed between the seepage digestion beds, and the thickness of the modified filter material on the seepage digestion beds is 8-10 cm.
6. The treatment method for improving the water recycling of aquaculture according to claim 1, comprising the following steps:
step S1: culturing microorganisms of a nano ceramic carrier biomembrane, pumping and delivering mixed liquid of fish and shrimp feces and residual baits in a culture pond to a water storage pond through a pumping and delivering mechanism to serve as nutrient solution, wherein a sand filter screen is used for filtering to reduce solid organic matters and residual baits in culture wastewater, the filtered wastewater is sprayed to a nano ceramic membrane through a spiral nozzle of a water inlet main pipe, the nutrient solution is uniformly sprayed onto the nano ceramic carrier biomembrane to provide nutrients for the growth of the microorganisms, so that the microorganisms simultaneously carry out aerobic and anaerobic reactions in a biological filter tower, polyacrylamide and antibiotics are added into the water storage pond for acclimation, and then a stable nitrification-aerobic denitrification microbial membrane is formed on the nano ceramic carrier, the culture period of the nitrification-aerobic denitrification microbial membrane is 15 days, and when old biomembranes are peeled off, the nitrification-aerobic denitrification microbial membrane falls back to a biomembrane removing filter screen in a middle buffer pond, the waste water is discharged by a scraper on the filter screen at regular time;
step S2: the method comprises the following steps of (1) carrying out microbial culture on a seepage digestion bed, pumping a mixed solution of fish and shrimp feces and residual baits in a culture pond to a middle cache pond through a pumping mechanism to serve as a nutrient solution, spraying the nutrient solution into the seepage digestion bed through a spiral nozzle in a water outlet main pipe, uniformly spraying the nutrient solution onto the seepage digestion bed, paving a modified filter material on the seepage digestion bed to provide nutrients for microbial growth, paving each layer of the filter material with the thickness of 8-10cm generally, and spacing each layer of the seepage digestion bed by 8-10cm for culturing nitrobacteria and aerobic denitrifying microorganisms on the seepage digestion bed, so that stable nitrobacteria and an aerobic denitrifying microbial film are formed on the modified filter material in the seepage digestion bed, wherein the culture period of the aerobic denitrifying microbial film is 15 days;
step S3: purifying and recycling aquaculture water, removing ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water by a nitrification-aerobic denitrification microbial membrane of a nano ceramic carrier biological membrane, degrading the concentration of the ammonia nitrogen, nitrite nitrogen and carbon dioxide in the aquaculture water, storing the aquaculture water in a middle cache tank after primary purification is finished, finally purifying the aquaculture water in the middle cache tank by the aerobic denitrification microbial membrane of a seepage digestion bed, increasing dissolved oxygen in the aquaculture water and further removing organic matters, the ammonia nitrogen and the nitrite nitrogen by the alternate action of an air fault reoxygenation area and a filter material filling seepage denitrification area among multiple layers of filter materials on the seepage digestion bed, wherein an air channel is formed between the two interlayer seepage digestion beds for naturally supplying oxygen to the aquaculture water, increasing the oxygen concentration of a water body, obtaining high-quality aquaculture water, and conveying the aquaculture water to a purification water tank, the culture water in the purified water pool is sent to the culture pool for use, the culture water discharged into the culture pool in the purified water pool can be reused, and the culture water can be recycled after being introduced into the device for purification treatment after use.
7. The treatment method for improving the water recycling of aquaculture of claim 6, wherein the nitrifying bacteria in steps S1 and S2 are nitrifying bacteria or nitrifying bacteria, and the aerobic denitrifying microorganism is one or more of Alcaligenes and Paracoccus.
8. The treatment method for improving the water recycling of aquaculture according to claim 6, wherein the common antibiotics for aquaculture in step S1 are sulfacha solutions or oxytetracycline or florfenicol or ofloxacin.
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