CN105836975B - A kind of water treatment system and its processing method of aquaculture pond - Google Patents

A kind of water treatment system and its processing method of aquaculture pond Download PDF

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Publication number
CN105836975B
CN105836975B CN201610398173.2A CN201610398173A CN105836975B CN 105836975 B CN105836975 B CN 105836975B CN 201610398173 A CN201610398173 A CN 201610398173A CN 105836975 B CN105836975 B CN 105836975B
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water
pump
aquaculture pond
aqueduct
filter
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CN105836975A (en
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龚晓寒
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龚晓寒
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage

Abstract

The invention discloses a kind of water treatment systems of aquaculture pond, including aquaculture pond, the first water pump, filter, degassing film, vacuum pump, sterilization pool, cold-warm type cooling-water machine, Airfloat pump, oxygenation pipe, biofilter and the second water pump;The invention also discloses a kind of method for treating water of aquaculture pond using the processing system, this method is by carrying out the processing such as oxygenation, separation, filtering, degassing, disinfection, denitrogenation to the water in aquaculture pond, the survival rate of fresh or live aquatic products mouth can be improved, to reduce aquaculture cost, it increases economic efficiency, and the exhaust gas after the filtered filter residue of recycling and degassing, it is handled by biofilter, more environmentally protective, the water that is discharged as recycle-water or can be directly discharged into natural water after the processing of biofilter.

Description

A kind of water treatment system and its processing method of aquaculture pond
Technical field
The present invention relates to aquaculture technical field, the water treatment system of especially a kind of aquaculture pond and its place Reason method.
Background technique
Water process in aquaculture, the main waste handled in water body, including due to feeding caused by bait Residual bait, the nutritional ingredient that do not digest and assimilate and Metabolism Excretion object etc. cultivate Salmons, 13% protein in feed, 8% rouge Fat, 40% carbohydrate, 17% organic matter, 50% ashes and 23% dry matter are discharged into water by fish as metabolin, Existing solable matter such as ammonia nitrogen, nitrate, nitrite etc., also there is solids and suspended matter, the accumulation meeting pair of some substances Cultured fishes generate physiological effect and toxic effect.Therefore, these breeding wastes are removed or converted from water body, keep water body Water quality, the health of fresh and living aquatic products in transport, growth are very important.
Water process in aquaculture mainly includes several aspects: oxygenation, separation (separation solids and suspended matter), mistake The treatment processes such as (reduction BOD, ammonia nitrogen and nitrite), degassing, disinfection, denitrogenation are filtered, wherein suspended matter, ammonia nitrogen, carbon dioxide Removal with hydrogen sulfide is the technical difficult points for needing to solve.
Summary of the invention
Based on this, in view of the above-mentioned problems, it is necessary to propose a kind of water treatment system of aquaculture pond and its processing side Method, the processing system and its processing method can to the water in aquaculture pond complete oxygenation, separation, filtering, degassing, disinfection, The processing such as denitrogenation, treated, and water can be used as recycle-water, can also reach discharge standard and be directly discharged into natural water, effective to solve The certainly water treatment problems in fresh and living aquatic products cultivation.
The technical scheme is that a kind of water treatment system of aquaculture pond, including aquaculture pond, the first water pump, Filter, degassing film, vacuum pump, sterilization pool, cold-warm type cooling-water machine, Airfloat pump, oxygenation pipe, biofilter and the second water pump, institute The aquaculture pond stated connects the water inlet of first water pump by aqueduct, and the water outlet of first water pump passes through water-supply-pipe Road connects the water inlet of the filter, and the water outlet of the filter enters water by what aqueduct connected the degassing film Mouthful, the exhaust outlet of the degassing film connects the air inlet of the vacuum pump by tracheae, and the water outlet of the degassing film passes through defeated Waterpipe is connected to the sterilization pool, and the sterilization pool enters water by what aqueduct connected the cold-warm type cooling-water machine Mouthful, the water outlet of the cold-warm type cooling-water machine is connected to the aquaculture pond, the water inlet of the Airfloat pump by aqueduct Pass through the two sides that aqueduct is connected to the cultivation bottom of pond portion, the water inlet and water outlet of the Airfloat pump respectively with water outlet Between be provided with oxygenation pipe, be provided with several drainage holes, the sewage draining exit of the filter and the vacuum on the oxygenation pipe The exhaust outlet of pump is connected to the biofilter by pipeline, and the biofilter passes through aqueduct and second water pump Water inlet connection, the water outlet of second water pump by aqueduct be connected to described in aquaculture pond.
It is divided into three parts when system operation:
Water extraction in aquaculture pond is sent into filter and is filtered, goes miscellaneous in water removal by first part, the first water pump Matter (such as Secretory product of residual bait, fresh and living aquatic products), filtered water are de-gassed to go having in water removal by degassing film The pernicious gas of evil gas (such as ammonia nitrogen, carbon dioxide, hydrogen sulfide gas), removal is extracted out by vacuum pump, the water after degassing It is admitted to sterilization pool to carry out disinfection, the temperature that finally lower water temperature is survived to the growth of suitable aquatic products by cold-warm type cooling-water machine After re-enter in aquaculture pond;
Water in aquaculture pond is drawn through after Airfloat pump processing generates heavy-oxygen-enriched water and re-enters aquaculture pond by second part It is interior;
The exhaust gas of Part III, filter residue and the vacuum pump extraction that filter generates in first part inputs biofilter, warp Cross that the biofilter water that treated obtains can re-enter aquaculture pond or direct emission enters in natural water.
Preferably, the filter is automatic backwashing filter.Automatic backwashing filter can clean automatically Filter, automatic pollution discharge do not stop during backwash, and cleaning is adjustable filter cycle.
Preferably, more oxygenation pipes are provided between the water inlet and water outlet of the Airfloat pump.After can making oxygenation Heavy-oxygen-enriched water support pond in uniformly spread.
Preferably, the spacing between the oxygenation pipe is 40cm.
Preferably, it is 20cm that the spacing of upper drainage hole is managed in the oxygenation.
Using the method for treating water of the aquaculture pond of the processing system, including circulating water treatment, oxygenation processing and Pollutant treatment,
Steps are as follows for the circulating water treatment:
(1) processing first is filtered to the water extraction in aquaculture pond;
(2) water obtained to step (1) removes ammonia nitrogen, carbon dioxide, hydrogen sulfide gas in water removal;
(3) water obtained to step (2) carries out disinfection processing;
(4) cooling treatment is carried out to the water that step (3) obtains, its temperature is adjusted to the temperature of suitable aquatic products existence growth Degree;
(5) water that step (4) obtains is re-entered into aquaculture pond;
The oxygenation processing step is as follows:
(1) water in aquaculture pond is drawn through after Airfloat pump processing generates heavy-oxygen-enriched water and is re-entered in aquaculture pond;
Steps are as follows for the pollutant treatment:
(1) exhaust gas generated in the filter residue and step (2) that generate in circulating water treatment step (1) is inputted into biofilter, Aquaculture pond can be re-entered by the biofilter water that treated obtains or direct emission enters in natural water.
The beneficial effects of the present invention are:
(1) perfect water treatment process ensure that water quality when aquaculture is suitble to the existence and life of fresh and living aquatic products Long, the survival rate for improving fresh or live aquatic products mouth is increased economic efficiency to reduce aquaculture cost;
(2) structure is simple, multiple functional, adapts to a variety of environment, can not only complete to increase to the water in aquaculture pond The processing such as oxygen, separation, filtering, degassing, disinfection, denitrogenation, and the exhaust gas after filtered filter residue and degassing is recycled, pass through biology Filter tank processing, more environmentally protective, the water that is discharged as recycle-water or can be directly discharged into natural water after the processing of biofilter In.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention;
Fig. 2 is the top view of aquaculture pond described in Fig. 1.
Appended drawing reference: 100- aquaculture pond, the first water pump of 101-, 102- filter, 103- degassing film, 104- vacuum pump, 200- sterilization pool, 201- cold-warm type cooling-water machine, the biofilter 300-, the second water pump of 301-, 400- Airfloat pump, 401- oxygenation pipe, 402- drainage hole.
Specific embodiment
The embodiment of the present invention is described in detail with reference to the accompanying drawing.
Embodiment one
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
Embodiment two
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
The filter 102 is automatic backwashing filter.
Embodiment three
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
The filter 102 is automatic backwashing filter.
More oxygenation pipes 401 are provided between the water inlet and water outlet of the Airfloat pump 400.
Example IV
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
The filter 102 is automatic backwashing filter.
More oxygenation pipes 401 are provided between the water inlet and water outlet of the Airfloat pump 400.
Spacing between the oxygenation pipe 401 is 40cm.
Embodiment five
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
The filter 102 is automatic backwashing filter.
More oxygenation pipes 401 are provided between the water inlet and water outlet of the Airfloat pump 400.
Spacing between the oxygenation pipe 401 is 40cm.
The spacing of drainage hole 402 is 20cm on the oxygenation pipe 401.
Embodiment six
As shown in Figure 1 and Figure 2, a kind of water treatment system of aquaculture pond, including aquaculture pond 100, the first water pump 101, Filter 102, degassing film 103, vacuum pump 104, sterilization pool 200, cold-warm type cooling-water machine 201, Airfloat pump 400, oxygenation pipe 401, Biofilter 300 and the second water pump 301, the aquaculture pond 100 enter water by what aqueduct connected first water pump 101 Mouthful, the water outlet of first water pump 101 connects the water inlet of the filter 102, the filter 102 by aqueduct Water outlet the water inlet of the degassing film 103 is connected by aqueduct, the exhaust outlet of the degassing film 103 passes through tracheae and connects The air inlet of the vacuum pump 104 is connect, the water outlet of the degassing film 103 is connected to the sterilization pool by aqueduct 200, the sterilization pool 200 connects the water inlet of the cold-warm type cooling-water machine 201, the cold-warm type cold water by aqueduct The water outlet of machine 201 is connected to the aquaculture pond 100, the water inlet and water outlet of the Airfloat pump 400 by aqueduct Be connected to the two sides of 100 bottom of aquaculture pond by aqueduct respectively, the water inlet and water outlet of the Airfloat pump 400 it Between be provided with oxygenation pipe 401, be provided with several drainage holes 402, the sewage draining exit of the filter 102 on the oxygenation pipe 401 The biofilter 300 is connected to by pipeline with the exhaust outlet of the vacuum pump 104, the biofilter 300 passes through defeated Waterpipe is connect with the water inlet of second water pump 301, and the water outlet of second water pump 301 is connected to by aqueduct The aquaculture pond 100.
The filter 102 is automatic backwashing filter.
More oxygenation pipes 401 are provided between the water inlet and water outlet of the Airfloat pump 400.
Spacing between the oxygenation pipe 401 is 40cm.
The spacing of drainage hole 402 is 20cm on the oxygenation pipe 401.
Using the method for treating water of the aquaculture pond of the processing system, including circulating water treatment, oxygenation processing and Pollutant treatment,
Steps are as follows for the circulating water treatment:
(1) processing first is filtered to the water extraction in aquaculture pond;
(2) water obtained to step (1) removes ammonia nitrogen, carbon dioxide, hydrogen sulfide gas in water removal;
(3) water obtained to step (2) carries out disinfection processing;
(4) cooling treatment is carried out to the water that step (3) obtains, its temperature is adjusted to the temperature of suitable aquatic products existence growth Degree;
(5) water that step (4) obtains is re-entered into aquaculture pond;
The oxygenation processing step is as follows:
(1) water in aquaculture pond is drawn through after Airfloat pump processing generates heavy-oxygen-enriched water and is re-entered in aquaculture pond;
Steps are as follows for the pollutant treatment:
(1) exhaust gas generated in the filter residue and step (2) that generate in circulating water treatment step (1) is inputted biological filter by (1) Pond can re-enter aquaculture pond by the biofilter water that treated obtains or direct emission enters in natural water.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.

Claims (4)

1. a kind of water treatment system of aquaculture pond, which is characterized in that including aquaculture pond, the first water pump, filter, degassing Film, vacuum pump, sterilization pool, cold-warm type cooling-water machine, Airfloat pump, oxygenation pipe, biofilter and the second water pump, the aquaculture pond are logical The water inlet that aqueduct connects first water pump is crossed, the water outlet of first water pump connects the mistake by aqueduct The water inlet of filter, the water outlet of the filter connect the water inlet of the degassing film, the degassing film by aqueduct Exhaust outlet the air inlet of the vacuum pump is connected by tracheae, the water outlet of the degassing film is connected to institute by aqueduct The sterilization pool stated, the sterilization pool connect the water inlet of the cold-warm type cooling-water machine by aqueduct, and the cold-warm type is cold The water outlet of water dispenser is connected to the aquaculture pond by aqueduct, and the water inlet and water outlet of the Airfloat pump pass through respectively Aqueduct is connected to the two sides of the cultivation bottom of pond portion, is provided with oxygenation between the water inlet and water outlet of the Airfloat pump Pipe, is provided with several drainage holes on the oxygenation pipe, and the exhaust outlet of the sewage draining exit of the filter and the vacuum pump passes through Pipeline is connected to the biofilter, and the biofilter is connect by aqueduct with the water inlet of second water pump, The water outlet of second water pump is connected to the aquaculture pond by aqueduct, and the filter washes for automatic backflushing Filter.
2. the water treatment system of aquaculture pond according to claim 1, which is characterized in that the Airfloat pump enters water More oxygenations pipes are provided between mouth and water outlet.
3. the water treatment system of aquaculture pond according to claim 2, which is characterized in that between the oxygenation pipe Spacing be 40cm.
4. the water treatment system of aquaculture pond according to claim 1 or 2 or 3, which is characterized in that the oxygenation pipe The spacing of upper drainage hole is 20cm.
CN201610398173.2A 2016-06-07 2016-06-07 A kind of water treatment system and its processing method of aquaculture pond Active CN105836975B (en)

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CN107459209A (en) * 2017-08-24 2017-12-12 广州翔曦能源科技有限公司 A kind of circular water treating system and a kind of cultivation water circulation purifying method
CN112931305A (en) * 2021-01-15 2021-06-11 启源渔业科技有限公司 Green aquaculture method based on recirculating aquaculture aquatic products

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CN102948380A (en) * 2011-08-24 2013-03-06 中国水产科学研究院黄海水产研究所 Energy-saving factory circulating water oplopanaxelatus seedling protection process method
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CN202492399U (en) * 2012-03-27 2012-10-17 四川科伦药业股份有限公司 Degassing membrane device for purified water treatment system
CN205687747U (en) * 2016-06-07 2016-11-16 龚晓寒 A kind of water treatment facilities of aquaculture pond

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