CN102603126A - Technology for treatment of mariculture circulating water of biological filter and membrane filtration - Google Patents
Technology for treatment of mariculture circulating water of biological filter and membrane filtration Download PDFInfo
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- CN102603126A CN102603126A CN2012100951506A CN201210095150A CN102603126A CN 102603126 A CN102603126 A CN 102603126A CN 2012100951506 A CN2012100951506 A CN 2012100951506A CN 201210095150 A CN201210095150 A CN 201210095150A CN 102603126 A CN102603126 A CN 102603126A
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Abstract
The invention provides a technology for treatment of mariculture circulating water of biological filter and membrane filtration, which comprises the following steps of: (1) pretreating; (2) primarily filtering by a biological filter; (3) moderately filtering by a membrane filtering unit; and (4) precipitating in an impounding reservoir. Firstly, big-particle pollutants are intercepted by the biological filter, and other pollutants are subjected to oxidative degradation to remove main pollution impurities in a water body; and then, small-particle pollutants and microorganisms remained in the water body are intercepted by the membrane filtration so as to achieve the purpose of purifying the water body and circularly using. The technology disclosed by the invention keeps the advantages of the traditional biological filter on resolvable pollutants in the circulating culture water body. By regulating the seawater treatment process step, the efficient, safe and stable circulating culture water body treatment technology is formed by fully utilizing the characteristics of low effluent particles and microorganisms in the membrane filtration technology.
Description
Technical field
The present invention relates to brine disposal technology, specifically is the mode of utilizing biological filter and membrane filtration combination treatment, and the purpose that reach seawater cleaning, recycles belongs to the water treatment technology field of sea farming.
Background technology
Existing seawater recirculation system comprises the multiple-stage treatment unit, and wherein the most key is is main biological treatment part with the biological filter.This type of technology is divided into two big types at present; The first kind is the traditional biological filter, is main purpose to remove organism and ammonia nitrogen, can hold back part macrobead pollutent simultaneously; This type of biological filter structure and operational conditions are simple, as: immersion biological filter, rotary drum biological filter.Another kind of then is to be the biological filter of main purpose with the PM for particulate matter removed in the circulating water body, and this type of filter structure and control condition is complicacy comparatively all, as: microballon filter, sand-bed filter.
Biological filter is through filler and adhere in the microbial film filtering recirculated water on it macrobead thing and be decomposed into dissolved organic matter and ammonia nitrogen, and dissolubility pollutant then can be able to remove through microbiological oxidation, recovers water quality.But biological filter actually operating with use in exist following not enough: the filler of (1) biological filter to water body in the PM for particulate matter removal ability of ultra-fine grain particularly; (2) biological filter treatment effect instability goes out particle water and organic content or corresponding removal effect has cyclic fluctuation; (3) microbial film constitutes whole cultivating system microbial source in the filter, thereby filter is poor to control and the regulating power of pathogenic bacteria.
Thereby membrane filtration process is the organic and inorganic PM for particulate matter and the various mikrobe that utilize the physical filtering effect of mould material to hold back in the waste water reaches the purpose that purifies water; PM for particulate matter under holding back and mikrobe are then through the backwash operation emptying.Thereby membrane module can hold back PM for particulate matter nearly all in the marine culture water, mikrobe and solid nutrient material, but dissolubility pollutant such as ammonia nitrogen and organism are not then removed ability, and promptly membrane filtration process does not possess the function of circularly purifying aquaculture water; And the membrane biological reactor process of membrane filtration process and activated sludge process be combined into is similar to the removal effect and the biological filter of dissolubility pollutant in the breeding wastewater on the other hand, but is difficult in production-scale circulating water cultivation, widely apply because of the cost nobleness.
Summary of the invention
Deficiency to the prior art existence; Technical problem to be solved by this invention is; A kind of biological filter and membrane filtration combination treatment sea farming recirculated water technology are provided, at first utilize biological filter that the macrobead pollutent is held back and, remove the main pollution impurity in the water body the degraded of other pollutant oxidations; Through membrane filtration small particles of pollution thing and mikrobe residual in the water body are held back the purpose that reach purifying water body, recycles then.Compare traditional biological filter technology; Technology of the present invention had both kept the advantage of traditional biological filter to the efficient removal ability of solvability pollution in the cyclic culture water body; Again through adjustment brine disposal process step; Make full use of the low characteristics of membrane filtration process water outlet PM for particulate matter and content of microorganisms, form efficient, safe, stable cyclic culture water body treatment process.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is, a kind of biological filter and membrane filtration combination treatment sea farming recirculated water technology are provided, and a kind of biological filter and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water; Fill in the biological filter and hang with biomembranous bamboo ring packing, bamboo ring packing hydraulic detention time maintains 0.5-0.75h, at temperature 14-22 ℃; DO>6.7mg/L; The pH value is under the condition of 7.3-8.0, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled;
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time≤1hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 10-30KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology, wherein, the biological filter in the step (2) is filled the bamboo ring packing that accounts for cubic capacity 60-80%, and the bamboo ring packing was hung the film after date through 60-75 days, and the surface hangs with sophisticated microbial film.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology, wherein, biological filter carried out 1 back flushing and blowdown at least in every month.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology, wherein, the membrane filter unit in the step (3) is provided with two groups at least.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology; Wherein, Filter column in the step (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1h, suspending should the water inlet of group membrane filter unit, and carries out the membrane module matting, and membrane module is the PVDF ultra-filtration membrane.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology, wherein, use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans the recovery membrane flux.
Above-mentioned biological filter and membrane filtration combination treatment sea farming recirculated water technology, wherein, the water reservoir capacity in the step (4) satisfies the used water purification amount of membrane module back flushing.
After step (1) pre-treatment and the preliminary filtration of (2) biological filter, corresponding SS clearance was 0 ~ 67% (biofilm detachment can cause not having removal effect), and COD clearance 16%-50%, TAN clearance are 46%-71%.
After the filtration of step (3) membrane filter unit moderate, almost can remove all PM for particulate matters and mikrobe (clearance is 99.99%), and can the COD clearance be promoted to 67% ~ 85%; Membrane module back flushing and matting can be got rid of the PM for particulate matter that accumulates in membrane contaminant and the Filter column, and design at least 2 group membrane filter units can not influence recycling of aquaculture water with matting and the maintenance that guarantees membrane module.
In the biological filter bamboo ring packing trapped particles thing form the floc sedimentation alluvial in packing layer or biological filter thereby this arts demand carry out back flushing and blowdown 1 time every month.
The metals ion that seawater contains is prone to form throw out and stops up membrane module ultra-filtration membrane fenestra; And the resistance ratios of inorganic precipitation and organic obstruction contribution is about 1, thereby the bronsted lowry acids and bases bronsted lowry solution that need use in order during matting cleans according to film product maintenance requirement and can enough recover membrane flux.
The present invention has following advantage and beneficial effect:
1, the advantage that keeps biological filter technology, biological filter all has certain removal effect and process structure simple for pollutent in the breeding wastewater of little pollution, and running cost is low;
2, particle content is low in the biological filter water outlet, utilizes membrane filtration process to handle again, can be on the basis of satisfying the requirement of removing subparticle and mikrobe; Use the bigger filtering film component of flux; Compare membrane bioreactor, reduce the film usage quantity, effectively reduce running cost;
3, biological filter goes out water pollutant particularly mikrobe and particle content is often unstable, reaches stable through membrane filtration process, and has cut off the influence of biological filter to the full cycle cultivating system;
4, membrane filter unit is high to the clearance of mikrobe, and can not cause other spinoffs to the recycle system, is the filtration and the disinfection way of highly effective and safe.
5, flexibility is strong; Adopt the present invention all efficiently to handle for dissolubility pollutant such as ammonia nitrogen, organism in the circulating water cultivation water body and PM for particulate matter and mikrobe; And water outlet can be satisfied the Fish culture water quality requirement, and technology has higher security and stability.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment:
Embodiment 1
Present embodiment waste water detects index: total ammonia nitrogen=0.25mg/L, COD=12mg/L, nitrous acid nitrogen=0.004mg/L, SS=250mg/L, content of microorganisms=10
7CFU/mL.
The biological filter of present embodiment and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water, biological filter is filled the bamboo ring packing that accounts for cubic capacity 70%, and the bamboo ring packing was hung the film after date through 75 days, and the surface hangs with sophisticated microbial film.Bamboo ring packing hydraulic detention time maintains 0.5h, at 22 ℃ of temperature, DO>6.7mg/L, the pH value is under 7.3 the condition, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled.
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is provided with two groups; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time 1hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 10KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
In the above-mentioned steps (2), biological filter is filled the bamboo ring packing that accounts for cubic capacity 60%, and the bamboo ring packing was hung the film after date through 60 days, and the surface hangs with sophisticated microbial film.Biological filter carried out 1 back flushing and blowdown at least in every month.
Filter column in the above-mentioned steps (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1hr; Suspend and should intake by the group membrane filter unit, and carry out the membrane module matting, membrane module is the PVDF ultra-filtration membrane; Use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans, to recover membrane flux.
Water reservoir capacity in the above-mentioned steps (4) satisfies the used water purification amount of membrane module back flushing.
Tentatively filter through step (2) biological filter, HRT=0.75h, immersion biological filter, waste water detect index and are: total ammonia nitrogen=0.12mg/L, COD=10mg/L, nitrite nitrogen=0.01mg/L, SS=80mg/L, content of microorganisms=10
6CFU/mL.
Filter HRT through step (3) membrane filter unit moderate<1h, waste water detect index and are: total ammonia nitrogen=0.18mg/>L, and COD=4.2mg/L, nitrite nitrogen=0.01mg/L can not detect SS, content of microorganisms<10
2CFU/mL.
Embodiment 2
Present embodiment waste water detects index: total ammonia nitrogen=2.20mg/L, COD=4mg/L, nitrous acid nitrogen=0.091mg/L, SS=15mg/L, content of microorganisms=10
5CFU/mL.
The biological filter of present embodiment and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water, biological filter is filled the bamboo ring packing that accounts for cubic capacity 70%, and the bamboo ring packing was hung the film after date through 60 days, and the surface hangs with sophisticated microbial film.Bamboo ring packing hydraulic detention time maintains 0.75h, at 14 ℃ of temperature, DO>6.7mg/L, the pH value is under 8.0 the condition, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled.
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is provided with two groups; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time 0.7hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 30KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
In the above-mentioned steps (2), biological filter is filled the bamboo ring packing that accounts for cubic capacity 80%, and the bamboo ring packing was hung the film after date through 75 days, and the surface hangs with sophisticated microbial film.Biological filter carried out 1 back flushing and blowdown at least in every month.
Filter column in the above-mentioned steps (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1h; Suspend and should intake by the group membrane filter unit, and carry out the membrane module matting, membrane module is the PVDF ultra-filtration membrane; Use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans, to recover membrane flux.
Water reservoir capacity in the above-mentioned steps (4) satisfies the used water purification amount of membrane module back flushing.
Tentatively filter through step (2) biological filter, HRT=0.75h, immersion biological filter, waste water detect index and are: total ammonia nitrogen=1.3mg/L, COD=2mg/L, nitrite nitrogen=0.1mg/L, SS=7mg/L, content of microorganisms=10
4CFU/mL.
Filter HRT through step (3) membrane filter unit moderate<1h, waste water detect index and are: total ammonia nitrogen=1.31mg/>L, and COD=1.8mg/L, nitrite nitrogen=0.1mg/L can not detect SS, content of microorganisms<10
2CFU/mL.
Embodiment 3
Present embodiment waste water detects index: total ammonia nitrogen=1.50mg/L, COD=8mg/L, nitrous acid nitrogen=0.050mg/L, SS=100mg/L, content of microorganisms=10
6CFU/mL.
The biological filter of present embodiment and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water, biological filter is filled the bamboo ring packing that accounts for cubic capacity 70%, and the bamboo ring packing was hung the film after date through 70 days, and the surface hangs with sophisticated microbial film.Bamboo ring packing hydraulic detention time maintains 0.65h, at 18 ℃ of temperature, DO>6.7mg/L, the pH value is under 7.8 the condition, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled.
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is provided with two groups; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time 0.5hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 30KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
In the above-mentioned steps (2), biological filter is filled the bamboo ring packing that accounts for cubic capacity 65%, and the bamboo ring packing was hung the film after date through 70 days, and the surface hangs with sophisticated microbial film.Biological filter carried out 1 back flushing and blowdown at least in every month.
Filter column in the above-mentioned steps (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1h; Suspend and should intake by the group membrane filter unit, and carry out the membrane module matting, membrane module is the PVDF ultra-filtration membrane; Use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans, to recover membrane flux.
Water reservoir capacity in the above-mentioned steps (4) satisfies the used water purification amount of membrane module back flushing.
Tentatively filter through step (2) biological filter, HRT=0.65h, immersion biological filter, waste water detect index and are: total ammonia nitrogen=0.8mg/L, COD=6mg/L, nitrite nitrogen=0.05mg/L, SS=45mg/L, content of microorganisms=10
5CFU/mL.
Filter HRT through step (3) membrane filter unit moderate<1h, waste water detect index and are: total ammonia nitrogen=0.35mg/>L, and COD=2.8mg/L, nitrite nitrogen=0.05mg/L can not detect SS, content of microorganisms<10
2CFU/mL.
Embodiment 4
Present embodiment waste water detects index: total ammonia nitrogen=0.85mg/L, COD=10mg/L, nitrous acid nitrogen=0.076mg/L, SS=50mg/L, content of microorganisms=10
6CFU/mL.
The biological filter of present embodiment and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water, biological filter is filled the bamboo ring packing that accounts for cubic capacity 70%, and the bamboo ring packing was hung the film after date through 70 days, and the surface hangs with sophisticated microbial film.Bamboo ring packing hydraulic detention time maintains 0.60h, at 20 ℃ of temperature, DO>6.7mg/L, the pH value is under 7.5 the condition, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled.
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is provided with two groups; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time 0.5hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 30KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
In the above-mentioned steps (2), biological filter is filled the bamboo ring packing that accounts for cubic capacity 70%, and the bamboo ring packing was hung the film after date through 72 days, and the surface hangs with sophisticated microbial film.Biological filter carried out 1 back flushing and blowdown at least in every month.
Filter column in the above-mentioned steps (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1h; Suspend and should intake by the group membrane filter unit, and carry out the membrane module matting, membrane module is the PVDF ultra-filtration membrane; Use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans, to recover membrane flux.
Water reservoir capacity in the above-mentioned steps (4) satisfies the used water purification amount of membrane module back flushing.
Tentatively filter through step (2) biological filter, HRT=0.60h, immersion biological filter, waste water detect index and are: total ammonia nitrogen=0.35mg/L, COD=8mg/L, nitrite nitrogen=0.06mg/L, SS=22mg/L, content of microorganisms=10
5CFU/mL.
Filter through step (3) membrane filter unit moderate, HRT 1h, waste water detect index and are: and total ammonia nitrogen=0.15mg/L, COD=3.2mg/L, nitrite nitrogen=0.05mg/L can not detect SS, content of microorganisms < 102CFU/>mL.
The above only is to preferred embodiment of the present invention, is not to be that the present invention is done other forms of restriction, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the present invention program's content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to protection scope of the present invention according to technical spirit of the present invention.
Claims (7)
1. biological filter and membrane filtration combination treatment sea farming recirculated water technology may further comprise the steps:
(1) pre-treatment: pending waste water is carried out pre-treatment through grid filtration and foam separation;
(2) biological filter tentatively filters: get into biological filter through pretreated waste water; Fill in the biological filter and hang with biomembranous bamboo ring packing, bamboo ring packing hydraulic detention time maintains 0.5-0.75h, at temperature 14-22 ℃; DO>6.7mg/L; The pH value is under the condition of 7.3-8.0, and waste water filters and the microbial film catalytic oxidation through filler, and preliminary filtration, purification is handled;
(3) the membrane filter unit moderate is filtered: the waste water through biological filter gets into membrane filter unit; Membrane filter unit is made up of Filter column and membrane module; Filter column hydraulic detention time≤1hr, membrane module assist through suction pump and carry out the membrane filtration water outlet, and it is 10-30KPa that suction pump produces transmembrane pressure;
(4) water reservoir deposition: get into water reservoir through the filtering waste water of membrane filter unit moderate, precipitate for use.
2. biological filter according to claim 1 and membrane filtration combination treatment sea farming recirculated water technology; Wherein, Biological filter in the step (2) is filled the bamboo ring packing that accounts for cubic capacity 60-80%, and the bamboo ring packing was hung the film after date through 60-75 days, and the surface hangs with sophisticated microbial film.
3. biological filter according to claim 1 and 2 and membrane filtration combination treatment sea farming recirculated water technology, wherein, biological filter carried out 1 back flushing and blowdown at least in every month.
4. biological filter according to claim 1 and membrane filtration combination treatment sea farming recirculated water technology, wherein, the membrane filter unit in the step (3) is provided with two groups at least.
5. according to claim 1 or 4 described biological filters and membrane filtration combination treatment sea farming recirculated water technology; Wherein, Filter column in the step (3) is provided with waste water filtering inlet and outlet piping and back flushing emptying pipe, and the membrane module waste water filtering time is 6h:5min with membrane module backwashing time ratio; When transmembrane pressure>30KPa or hydraulic detention time>during 1h, suspending should the water inlet of group membrane filter unit, and carries out the membrane module matting, and membrane module is the PVDF ultra-filtration membrane.
6. biological filter according to claim 5 and membrane filtration combination treatment sea farming recirculated water technology, wherein, use in order hydrochloric acid and sodium hydrogen carbonate solution of membrane module matting cleans to recover membrane flux.
7. biological filter according to claim 1 and membrane filtration combination treatment sea farming recirculated water technology, wherein, the water reservoir capacity in the step (4) satisfies the used water purification amount of membrane module back flushing.
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|---|---|---|---|
| CN2012100951506A CN102603126A (en) | 2012-04-01 | 2012-04-01 | Technology for treatment of mariculture circulating water of biological filter and membrane filtration |
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|---|---|---|---|
| CN2012100951506A CN102603126A (en) | 2012-04-01 | 2012-04-01 | Technology for treatment of mariculture circulating water of biological filter and membrane filtration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773901A (en) * | 2015-03-12 | 2015-07-15 | 浙江大学 | Biological treatment method of circulating culture water body |
| CN105668941A (en) * | 2016-04-01 | 2016-06-15 | 浙江东洋环境工程有限公司 | Circulating plant and method for young shrimp culture water |
| CN106145517A (en) * | 2016-06-28 | 2016-11-23 | 董超超 | A kind of multi stage decompression sewage disposal device |
| CN108380053A (en) * | 2018-04-19 | 2018-08-10 | 深圳益田环保有限公司 | A kind of environment-protecting cultivation water treatment facilities and method |
| CN108409061A (en) * | 2018-05-10 | 2018-08-17 | 深圳市农博创新科技有限公司 | Sea-farming water treatment system |
-
2012
- 2012-04-01 CN CN2012100951506A patent/CN102603126A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773901A (en) * | 2015-03-12 | 2015-07-15 | 浙江大学 | Biological treatment method of circulating culture water body |
| CN105668941A (en) * | 2016-04-01 | 2016-06-15 | 浙江东洋环境工程有限公司 | Circulating plant and method for young shrimp culture water |
| CN105668941B (en) * | 2016-04-01 | 2018-11-06 | 浙江东洋环境工程有限公司 | A kind of recycle unit and round-robin method of shrimp seed rearing water |
| CN106145517A (en) * | 2016-06-28 | 2016-11-23 | 董超超 | A kind of multi stage decompression sewage disposal device |
| CN108380053A (en) * | 2018-04-19 | 2018-08-10 | 深圳益田环保有限公司 | A kind of environment-protecting cultivation water treatment facilities and method |
| CN108409061A (en) * | 2018-05-10 | 2018-08-17 | 深圳市农博创新科技有限公司 | Sea-farming water treatment system |
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Application publication date: 20120725 |