CN105836975A - Water treatment system for aquatic product culture pool and treatment method thereof - Google Patents
Water treatment system for aquatic product culture pool and treatment method thereof Download PDFInfo
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- CN105836975A CN105836975A CN201610398173.2A CN201610398173A CN105836975A CN 105836975 A CN105836975 A CN 105836975A CN 201610398173 A CN201610398173 A CN 201610398173A CN 105836975 A CN105836975 A CN 105836975A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
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- 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
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- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Farming Of Fish And Shellfish (AREA)
- Physical Water Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a water treatment system for an aquatic product culture pool. The water treatment system comprises a culture pool, a first water pump, a filter, a degassing film, a vacuum pump, a sterilization pool, a cooling and heating type water cooling machine, a gas floating pump, an oxygen filling pipe, a biological filter and a second water pump. The invention also discloses a water treatment method adopting the aquatic product culture pool of the treatment system. According to the method, water in the culture pool is subjected to treatment such as oxygenation, separation, filtration, degassing, sterilization and denitrification; the survival rate of fresh and live aquatic products can be improved, so that the culture cost is reduced; the economic benefits are improved; filtered filtering slag and degassed waste gas are recovered and are treated through the biological filter; a better green and environment-friendly effect is achieved; water discharged after the treatment by the biological filter can be used as reuse water or can be directly discharged into natural water bodies.
Description
Technical field
The present invention relates to aquaculture technical field, the water treatment system of a kind of aquaculture pond and processing method thereof.
Background technology
Water in aquaculture processes, the main discarded object processed in water body, including owing to throwing something and feeding bait and the residual bait caused, the nutritional labeling do not digested and assimilated and Metabolism Excretion thing etc., cultivation Salmons, the dry of 13% protein, the fat of 8%, the carbohydrate of 40%, the organic matter of 17%, 50% ashes and 23% in feed is entered in water by fish as metabolin, existing solable matter such as ammonia nitrogen, nitrate, nitrite etc., also having solids and suspension, the accumulation of some material can produce physiological effect and toxic action to cultured fishes.Therefore, from water body, remove or convert these breeding wastes, keep the water quality of water body, be very important to the health of fresh and living aquatic products, growth in transport.
Water in aquaculture processes and mainly includes several aspect: oxygenation, separations (separating solid substances and suspension), filter (reducing BOD, ammonia nitrogen and nitrite), deaerate, sterilize, the processing procedure such as denitrogenation, wherein the removal of suspension, ammonia nitrogen, carbon dioxide and hydrogen sulfide is the technical difficult points needing solution.
Summary of the invention
Based on this, for the problems referred to above, it is necessary to propose water treatment system and the processing method thereof of a kind of aquaculture pond, this processing system and processing method thereof the water in aquaculture pond can be completed oxygenation, separate, filter, deaerate, sterilize, denitrogenation etc. processes, water after process can be as recycle-water, also can reach discharge standard and be directly discharged into natural water, the effective water treatment problems solved in fresh and living aquatic products cultivation.
nullThe technical scheme is that the water treatment system of a kind of aquaculture pond，Including culturing pool、First water pump、Filter、Degassing film、Vavuum pump、Sterilization pool、Cold-warm type cooling-water machine、Airfloat pump、Oxygenation pipe、Biofilter and the second water pump，Described culturing pool connects the water inlet of described first water pump by aqueduct，The delivery port of described first water pump connects the water inlet of described filter by aqueduct，The delivery port of described filter connects the water inlet of described degassing film by aqueduct，The exhaust outlet of described degassing film connects the air inlet of described vavuum pump by tracheae，The delivery port of described degassing film is connected to described sterilization pool by aqueduct，Described sterilization pool connects the water inlet of described cold-warm type cooling-water machine by aqueduct，The delivery port of described cold-warm type cooling-water machine is connected to described culturing pool by aqueduct，The water inlet of described Airfloat pump and delivery port are connected to the both sides bottom described culturing pool by aqueduct respectively，It is provided with oxygenation pipe between water inlet and the delivery port of described Airfloat pump，It is provided with some osculums on described oxygenation pipe，The sewage draining exit of described filter and the exhaust outlet of described vavuum pump are connected to described biofilter by pipeline，Described biofilter is connected with the water inlet of described second water pump by aqueduct，The delivery port of described second water pump is connected to described culturing pool by aqueduct.
Three parts it are divided into during System Operation:
Part I, water in culturing pool is extracted out to send in filter and is filtered by the first water pump, remove the impurity (such as residual bait, the Secretory product of fresh and living aquatic products) in water, water after filtration is de-gassed the pernicious gas (such as gases such as ammonia nitrogen, carbon dioxide, hydrogen sulfide) removing in water through degassing film, the pernicious gas removed is extracted out through vavuum pump, water after degassing is admitted to sterilization pool and carries out disinfection, and eventually passes cold-warm type cooling-water machine and re-enters in culturing pool after the temperature of lower water temperature to suitable aquatic products growth existence；
Part II, is drawn through the water in culturing pool after Airfloat pump processes generation heavy-oxygen-enriched water and re-enters in culturing pool；
Part III, in Part I, the filter residue of filter generation and the waste gas of vavuum pump extraction input biofilter, and the water obtained after biofilter processes can re-enter culturing pool or directly drain in natural water.
Preferably, described filter is automatic backwashing filter.Automatic backwashing filter can clean filtration, automatic pollution discharge automatically, does not stops during backwash, cleans and can regulate filter cycle.
Preferably, it is provided with many oxygenation pipes between water inlet and the delivery port of described Airfloat pump.So that the heavy-oxygen-enriched water after oxygenation uniformly spreads in foster pond.
Preferably, the described spacing between oxygenation pipe is 40cm.
Preferably, on described oxygenation pipe, the spacing of osculum is 20cm.
Use the method for treating water of the aquaculture pond of described processing system, including circulating water treatment, oxygenation process and pollutant treatment,
Described circulating water treatment step is as follows:
(1) first the water extraction in culturing pool is carried out filtration treatment；
(2) water obtained step (1) removes the ammonia nitrogen in water, carbon dioxide, hydrogen sulfide gas；
(3) the water disinfection that step (2) is obtained；
(4) water obtaining step (3) carries out cooling process, by the regulation of its temperature to the temperature being suitable for aquatic products existence growth；
(5) water that step (4) obtains is re-entered culturing pool；
It is as follows that described oxygenation processes step:
(1) water in culturing pool is drawn through after Airfloat pump processes generation heavy-oxygen-enriched water and re-enters in culturing pool；
Described pollutant treatment step is as follows:
(1) the waste gas input biofilter that will produce in the filter residue produced in circulating water treatment step (1) and step (2), the water obtained after biofilter processes can re-enter culturing pool or directly drain in natural water.
The invention has the beneficial effects as follows:
(1) water quality when perfect water treatment process ensure that aquaculture is suitable for existence and the growth of fresh and living aquatic products, improves the survival rate of fresh or live aquatic products mouth, thus reduces aquaculture cost, increases economic efficiency；
(2) simple in construction, multiple functional, adapt to multiple environment, water in aquaculture pond can not only be completed oxygenation, separate, filter, deaerate, sterilize, denitrogenation etc. processes, and reclaim the filter residue after filtration and the waste gas after degassing, processed by biofilter, more environmental protection, the water that biofilter is discharged after processing can be as recycle-water or be directly discharged in natural water.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the top view of culturing pool described in Fig. 1.
Reference: 100-culturing pool, 101-the first water pump, 102-filter, 103-degassing film, 104-vavuum pump, 200-sterilization pool, 201-cold-warm type cooling-water machine, 300-biofilter, 301-the second water pump, 400-Airfloat pump, 401-oxygenation pipe, 402-osculum.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
Embodiment one
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Embodiment two
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Described filter 102 is automatic backwashing filter.
Embodiment three
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Described filter 102 is automatic backwashing filter.
Many oxygenation pipes 401 it are provided with between water inlet and the delivery port of described Airfloat pump 400.
Embodiment four
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Described filter 102 is automatic backwashing filter.
Many oxygenation pipes 401 it are provided with between water inlet and the delivery port of described Airfloat pump 400.
The described spacing between oxygenation pipe 401 is 40cm.
Embodiment five
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Described filter 102 is automatic backwashing filter.
Many oxygenation pipes 401 it are provided with between water inlet and the delivery port of described Airfloat pump 400.
The described spacing between oxygenation pipe 401 is 40cm.
On described oxygenation pipe 401, the spacing of osculum 402 is 20cm.
Embodiment six
nullSuch as Fig. 1、Shown in Fig. 2，A kind of water treatment system of aquaculture pond，Including culturing pool 100、First water pump 101、Filter 102、Degassing film 103、Vavuum 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，Described culturing pool 100 connects the water inlet of described first water pump 101 by aqueduct，The delivery port of described first water pump 101 connects the water inlet of described filter 102 by aqueduct，The delivery port of described filter 102 connects the water inlet of described degassing film 103 by aqueduct，The exhaust outlet of described degassing film 103 connects the air inlet of described vavuum pump 104 by tracheae，The delivery port of described degassing film 103 is connected to described sterilization pool 200 by aqueduct，Described sterilization pool 200 connects the water inlet of described cold-warm type cooling-water machine 201 by aqueduct，The delivery port of described cold-warm type cooling-water machine 201 is connected to described culturing pool 100 by aqueduct，The water inlet of described Airfloat pump 400 and delivery port are connected to the both sides bottom described culturing pool 100 by aqueduct respectively，It is provided with oxygenation pipe 401 between water inlet and the delivery port of described Airfloat pump 400，Some osculums 402 it are provided with on described oxygenation pipe 401，The sewage draining exit of described filter 102 and the exhaust outlet of described vavuum pump 104 are connected to described biofilter 300 by pipeline，Described biofilter 300 is connected with the water inlet of described second water pump 301 by aqueduct，The delivery port of described second water pump 301 is connected to described culturing pool 100 by aqueduct.
Described filter 102 is automatic backwashing filter.
Many oxygenation pipes 401 it are provided with between water inlet and the delivery port of described Airfloat pump 400.
The described spacing between oxygenation pipe 401 is 40cm.
On described oxygenation pipe 401, the spacing of osculum 402 is 20cm.
Use the method for treating water of the aquaculture pond of described processing system, including circulating water treatment, oxygenation process and pollutant treatment,
Described circulating water treatment step is as follows:
(1) first the water extraction in culturing pool is carried out filtration treatment；
(2) water obtained step (1) removes the ammonia nitrogen in water, carbon dioxide, hydrogen sulfide gas；
(3) the water disinfection that step (2) is obtained；
(4) water obtaining step (3) carries out cooling process, by the regulation of its temperature to the temperature being suitable for aquatic products existence growth；
(5) water that step (4) obtains is re-entered culturing pool；
It is as follows that described oxygenation processes step:
(1) water in culturing pool is drawn through after Airfloat pump processes generation heavy-oxygen-enriched water and re-enters in culturing pool；
Described pollutant treatment step is as follows:
(1) the waste gas input biofilter that (1) will produce in the filter residue produced in circulating water treatment step (1) and step (2), the water obtained after biofilter processes can re-enter culturing pool or directly drain in natural water.
Embodiment described above only have expressed the detailed description of the invention of the present invention, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (6)
- null1. the water treatment system of an aquaculture pond，It is characterized in that，Including culturing pool、First water pump、Filter、Degassing film、Vavuum pump、Sterilization pool、Cold-warm type cooling-water machine、Airfloat pump、Oxygenation pipe、Biofilter and the second water pump，Described culturing pool connects the water inlet of described first water pump by aqueduct，The delivery port of described first water pump connects the water inlet of described filter by aqueduct，The delivery port of described filter connects the water inlet of described degassing film by aqueduct，The exhaust outlet of described degassing film connects the air inlet of described vavuum pump by tracheae，The delivery port of described degassing film is connected to described sterilization pool by aqueduct，Described sterilization pool connects the water inlet of described cold-warm type cooling-water machine by aqueduct，The delivery port of described cold-warm type cooling-water machine is connected to described culturing pool by aqueduct，The water inlet of described Airfloat pump and delivery port are connected to the both sides bottom described culturing pool by aqueduct respectively，It is provided with oxygenation pipe between water inlet and the delivery port of described Airfloat pump，It is provided with some osculums on described oxygenation pipe，The sewage draining exit of described filter and the exhaust outlet of described vavuum pump are connected to described biofilter by pipeline，Described biofilter is connected with the water inlet of described second water pump by aqueduct，The delivery port of described second water pump is connected to described culturing pool by aqueduct.
- The water treatment system of aquaculture pond the most according to claim 1, it is characterised in that described filter is automatic backwashing filter.
- The water treatment system of aquaculture pond the most according to claim 1, it is characterised in that be provided with many oxygenation pipes between water inlet and the delivery port of described Airfloat pump.
- The water treatment system of aquaculture pond the most according to claim 3, it is characterised in that the described spacing between oxygenation pipe is 40cm.
- 5. according to the water treatment system of the aquaculture pond described in claim 1 or 3 or 4, it is characterised in that on described oxygenation pipe, the spacing of osculum is 20cm.
- 6. use the method for treating water of the aquaculture pond of processing system described in claim 1, it is characterised in that the treating method comprises circulating water treatment, oxygenation process and pollutant treatment,Described circulating water treatment step is as follows:(1) first the water extraction in culturing pool is carried out filtration treatment；(2) water obtained step (1) removes the ammonia nitrogen in water, carbon dioxide, hydrogen sulfide gas；(3) the water disinfection that step (2) is obtained；(4) water obtaining step (3) carries out cooling process, by the regulation of its temperature to the temperature being suitable for aquatic products existence growth；(5) water that step (4) obtains is re-entered culturing pool；It is as follows that described oxygenation processes step:(1) water in culturing pool is drawn through after Airfloat pump processes generation heavy-oxygen-enriched water and re-enters in culturing pool；Described pollutant treatment step is as follows:(1) the waste gas input biofilter that will produce in the filter residue produced in circulating water treatment step (1) and step (2), the water obtained after biofilter processes can re-enter culturing pool or directly drain in natural water.
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| 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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| CN105836975B (en) | 2019-06-07 |
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