CN111573907A - Water for shrimp cultivation and preparation method thereof - Google Patents
Water for shrimp cultivation and preparation method thereof Download PDFInfo
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- CN111573907A CN111573907A CN202010502123.0A CN202010502123A CN111573907A CN 111573907 A CN111573907 A CN 111573907A CN 202010502123 A CN202010502123 A CN 202010502123A CN 111573907 A CN111573907 A CN 111573907A
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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
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The invention discloses water for shrimp cultivation and a preparation method thereof, and the technical scheme is characterized by comprising the following steps: step one, primary precipitation; step two, secondary precipitation; step three, primary filtration; step four, secondary filtration; step five, three-stage filtration: conveying the seawater into a microfiltration device through a fifth water conveying pipe, and filtering the seawater in the microfiltration device through a microfiltration membrane; sixthly, reverse osmosis treatment: the seawater is conveyed to a reverse osmosis treatment device through a sixth water conveying pipe, and the reverse osmosis treatment device performs reverse osmosis separation on the seawater; step seven, ultrafiltration treatment: conveying the seawater into an ultrafiltration device through a seventh conveying pipe; step eight, constant temperature control: and (4) conveying the seawater to a constant-temperature water tank through an eighth water conveying pipe to obtain the shrimp culture water suitable for litopenaeus vannamei culture. The method has the advantages that the preparation process is safe and reliable, the preparation cost is high, the survival rate of the litopenaeus vannamei breeding can be greatly improved by the prepared shrimp breeding water, and the quality safety level of the fries is improved.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to water for shrimp cultivation and a preparation method thereof.
Background
The Litopenaeus vannamei is also called Penaeus vannamei, Vanna, native state Ecuador, the Pacific coast water area in south America in the native place, tropical zone, subtropical zone, warm zone and temperate zone sea area in the growing climate zone, and is distributed from the Pacific coast to the middle of the gulf of Mexico, and the life cycle is one year. The litopenaeus vannamei is a precious shrimp variety in China and even the world, and is also a crustacean breeding variety with the highest breeding yield and the fastest development speed. The Litopenaeus vannamei has wide adaptability, can be successfully cultured in saline water areas or fresh water areas, has rapid growth speed and extremely high meat yield, and is widely popular in coastal and inland areas of China. From 2012 to 2018, the annual yield of the litopenaeus vannamei breeding in the country reaches over 100 million tons.
The water regulation and control for the mature-promoting cultivation of parent shrimps are key factors directly influencing the mature promotion, mating and oviposition of litopenaeus vannamei. The penaeus vannamei boone has been proved to have the best survival rate and growth effect when living in a water environment with the characteristics of proper salinity, ion content, ratio and the like (zang Weiling and the like, 1995; Wang Hui and the like, 2000; Zhu Long wave and the like, 2009; Scottet al, 2009), the salinity of the existing natural seawater is between 10 and 20, and the penaeus vannamei boone is suitable for living in the salinity of about 30 per thousand; for parent shrimps, the water quality condition is more important and the requirement is stricter. Coastal estuaries and estuaries in our province are numerous, although the inbound rivers and estuaries convey a large amount of silt, nutritive salt and mineral substances for the offshore sea area, the inbound rivers and estuaries are easily influenced by coastal runoff and rainwater, so that the change of seawater components is large, and simultaneously, a large amount of pollutants are carried into the offshore sea area, so that the water quality of the offshore water area is reduced, red tide is frequent, the marine ecological environment is deteriorated, and the like, and the breeding speed and the breeding survival rate of the litopenaeus vannamei are influenced. Although part of the litopenaeus vannamei is cultured by preparing concentrated seawater from crude salt, the culture cost of the litopenaeus vannamei is greatly increased.
Therefore, the water for culturing the litopenaeus vannamei is urgently needed, which is safe, reliable, low in cost and capable of improving the breeding speed and the survival rate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the water for culturing the shrimps and the preparation method thereof, and the water has the effects of safe and reliable preparation process and high preparation cost, and the prepared water for culturing the shrimps can greatly improve the survival rate of the breeding of the litopenaeus vannamei and improve the quality safety level of offspring seeds.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of water for shrimp cultivation comprises the following steps:
step one, primary precipitation: the natural seawater is introduced into the reservoir through the arrangement of the first water conveying pipe, and the silt in the seawater is naturally settled in the reservoir;
step two, secondary precipitation: introducing the upper-layer seawater treated in the step one into a dark sedimentation tank by arranging a second water conveying pipe, and naturally settling floating algae in the seawater in the dark sedimentation tank;
step three, primary filtration: introducing the upper-layer seawater treated in the step two into a subsurface flow type sewage purification device for filtration by arranging a third water delivery pipe, and filtering organic matters and heavy metals in the seawater by the subsurface flow type sewage purification device;
step four, secondary filtration: conveying the seawater treated in the step three to a sand filtration device by arranging a fourth water conveying pipe, and filtering suspended solids and colloidal substances in the seawater by the sand filtration device to reduce the turbidity of the seawater;
step five, three-stage filtration: conveying the seawater treated in the fourth step into a microfiltration device by arranging a fifth water conveying pipe, wherein a microfiltration membrane is arranged in the microfiltration device, and filtering the seawater in the microfiltration device by the microfiltration membrane to filter bacteria and fine particles;
sixthly, reverse osmosis treatment: conveying the seawater treated in the step five to a reverse osmosis treatment device by arranging a sixth water conveying pipe, and performing reverse osmosis separation on the seawater by the reverse osmosis treatment device to obtain concentrated seawater and fresh water which are respectively positioned at two sides of a reverse osmosis membrane, wherein the salinity of the concentrated seawater is set to be 30-32 per mill;
step seven, ultrafiltration treatment: concentrated seawater is conveyed into an ultrafiltration device through a seventh conveying pipe, the size of a gap of the ultrafiltration device is set to be 0.002-0.1 mu m, particles and impurities are intercepted by the concentrated seawater through the ultrafiltration device, and colloids, proteins, microorganisms and macromolecular organic matters are effectively blocked;
step eight, constant temperature control: conveying the seawater treated in the step seven to a constant-temperature water tank by arranging an eighth water conveying pipe to obtain shrimp culture water suitable for litopenaeus vannamei culture;
wherein, the cistern, the dark sedimentation pond, the sand filtration device, the reverse osmosis treatment device and the constant temperature water tank are all provided with level gauges, pH indicators, salinity meters and thermometers that are adapted, all are provided with the delivery pump on first raceway, second raceway, third raceway, fourth raceway, fifth raceway, sixth first raceway, the eighth raceway.
The invention is further configured to: the left side and the right side of the water delivery pump are both provided with one-way stop valves, and one side of the water delivery pump is also provided with an electromagnetic valve matched with the water delivery pump.
The invention is further configured to: the sedimentation time of the impounding reservoir and the sedimentation tank is respectively set to 12 h-72 h and 6 h-48 h, a coarse grid and a fine grid which are matched with each other are obliquely arranged in the impounding reservoir, the coarse grid and the fine grid are arranged in parallel, the impounding reservoir and the joint of the second water pipe and the first water pipe are respectively positioned at the upper side and the lower side of the coarse grid, and shading plates are uniformly laid on the sedimentation tank.
The invention is further configured to: the sand filter device comprises at least two mutually connected quartz sand filters.
The invention is further configured to: the fifth water delivery pipe is also provided with a booster pump, and the booster pump raises the pressure of the seawater passing through the fifth water delivery pipe to 1.6-6.9 MPa.
The invention is further configured to: and the eighth water delivery pipe is also fixedly connected with a disinfection device matched with the eighth water delivery pipe, and a disinfectant for killing pathogenic microorganisms is arranged in the disinfection device.
The invention is further configured to: the inner wall of the constant-temperature water tank is provided with a plurality of uniformly distributed electric heating rods, the outer wall of the constant-temperature water tank is fixedly provided with a controller matched with the electric heating rods, and the water temperature in the constant-temperature water tank is set to be 20-35 ℃.
On the other hand, the invention provides the following technical scheme: a water for shrimp culture prepared by the method for producing a water for shrimp culture described in any one of the above.
In conclusion, the invention has the following beneficial effects:
1. the seawater is subjected to reverse osmosis separation through reverse osmosis treatment to obtain concentrated seawater and fresh water, a method for preparing the concentrated seawater by using crude salt is replaced, the preparation cost of the shrimp culture water is remarkably reduced, the culture cost of the litopenaeus vannamei is further reduced, bacteria and impurities in the seawater are removed through primary filtration, secondary filtration, tertiary filtration and ultrafiltration treatment, and the culture effect of the litopenaeus vannamei is effectively improved;
2. through setting up constant temperature water tank and degassing unit, can avoid the invasion and harm of nature sea area pollutant pathogenic factor, improve the survival rate that litopenaeus vannamei bred and promote the seed quality.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Reference numerals: 1. a first water delivery pipe; 2. a reservoir; 21. coarse grating; 22. a fine grid; 3. a second water delivery pipe; 4. a dark sedimentation tank; 41. a visor; 5. a third water delivery pipe; 6. a subsurface flow type sewage purification device; 7. a fourth water delivery pipe; 8. a sand filtration device; 81. a quartz sand filter; 9. a fifth water delivery pipe; 91. a booster pump; 10. a microfiltration device; 101. a microfiltration membrane; 11. a sixth water delivery pipe; 12. a reverse osmosis treatment device; 121. a reverse osmosis membrane; 13. a seventh delivery pipe; 14. an ultrafiltration device; 15. an eighth water delivery pipe; 151. a sterilizing device; 16. a constant temperature water tank; 161. an electric heating rod; 162. a controller; 17. a liquid level meter; 18. a pH indicator; 19. a salinity meter; 20. a thermometer; 23. a water delivery pump; 24. a one-way stop valve; 25. an electromagnetic valve.
Detailed description of the preferred embodiment 1
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 2, the present invention provides the following technical solutions: a preparation method of water for shrimp cultivation comprises the following steps:
step one, primary precipitation: the natural seawater is introduced into a reservoir 2 through a first water conveying pipe 1, silt in the seawater is naturally settled in the reservoir 2, and settling time is set to be 72 hours respectively; a coarse grid 21 and a fine grid 22 which are matched with each other are obliquely arranged in the reservoir 2, and the coarse grid 21 and the fine grid 22 are arranged in parallel;
step two, secondary precipitation: introducing the upper-layer seawater treated in the first step into a dark sedimentation tank 4 by arranging a second water conveying pipe 3, and naturally precipitating floating algae in the seawater in the dark sedimentation tank 4 for 48 hours respectively; shading plates 41 are uniformly paved on the dark sedimentation tank 4;
step three, primary filtration: introducing the upper-layer seawater treated in the step two into a subsurface flow type sewage purification device 6 for filtration by arranging a third water delivery pipe 5, and filtering organic matters and heavy metals in the seawater by the subsurface flow type sewage purification device 6;
step four, secondary filtration: conveying the seawater treated in the step three to a sand filtering device 8 by arranging a fourth water conveying pipe 7, and filtering suspended solids and colloidal substances in the seawater by the sand filtering device 8 to reduce the turbidity of the seawater;
step five, three-stage filtration: conveying the seawater treated in the fourth step into a microfiltration device 10 by arranging a fifth water conveying pipe 9, wherein a microfiltration membrane 101 is arranged in the microfiltration device 10, and the seawater is filtered by the microfiltration membrane 101 in the microfiltration device 10 to filter out bacteria and fine particles;
sixthly, reverse osmosis treatment: conveying the seawater treated in the fifth step to a reverse osmosis treatment device 12 by arranging a sixth water conveying pipe 11, carrying out reverse osmosis separation on the seawater by the reverse osmosis treatment device 12, arranging a reverse osmosis membrane 121 in the reverse osmosis treatment device 12 to obtain concentrated seawater and fresh water which are respectively positioned at two sides of the reverse osmosis membrane 121, and setting the salinity of the concentrated seawater to be 30 per mill;
step seven, ultrafiltration treatment: concentrated seawater is conveyed into an ultrafiltration device 14 through a seventh conveying pipe 13, the size of a gap of the ultrafiltration device 14 is set to be 0.1 mu m, particles and impurities are intercepted by the concentrated seawater through the ultrafiltration device 14, and colloids, proteins, microorganisms and macromolecular organic matters are effectively blocked;
step eight, constant temperature control: conveying the seawater treated in the step seven to a constant temperature water tank 16 by arranging an eighth water conveying pipe 15 to obtain shrimp culture water suitable for litopenaeus vannamei culture;
the reservoir 2, the dark sedimentation tank 4, the sand filtration device 8, the reverse osmosis treatment device 12 and the constant temperature water tank 16 are respectively provided with a level meter 17, a pH indicator 18, a salinity meter 19 and a thermometer 20 which are matched with each other, and the first water pipe 1, the second water pipe 3, the third water pipe 5, the fourth water pipe 7, the fifth water pipe 9, the sixth water pipe 11, the sixth first water pipe 1 and the eighth water pipe 15 are respectively provided with a water delivery pump 23; the reservoir 2 and the second water pipe 3 and the first water pipe 1 are respectively positioned at the upper side and the lower side of the coarse grid 21.
The membrane separation technology and ultrafiltration are a novel and efficient fluid separation technology, can be applied to marine animal breeding to prepare concentrated seawater required by marine organisms such as penaeus vannamei and sea cucumber breeding by concentrating seawater, keep the seawater components unchanged, and have good application prospect in efficient breeding of the marine organisms.
The left side and the right side of the water delivery pump 23 are both provided with one-way stop valves 24, and one side of the water delivery pump 23 is also provided with an electromagnetic valve 25 matched with the water delivery pump; the one-way stop valve 24 can prevent the backflow phenomenon at the water delivery pump 23, and the electromagnetic valve 25 is convenient for controlling the water delivery condition of the water delivery pump 23.
The sand filtering device 8 comprises at least two mutually connected quartz sand filters 81, the quartz sand filters 81 utilize quartz sand as a filtering medium, water with higher turbidity is filtered through granular or non-granular quartz sand with certain thickness under certain pressure, suspended matters, organic matters, colloidal particles, microorganisms, chlorine, odor, partial heavy metal ions and the like in the water are effectively intercepted and removed, and finally, the effects of reducing the water turbidity and purifying the water quality are achieved.
Still be provided with booster pump 91 on the fifth raceway 9, booster pump 91 promotes the seawater pressure that passes through in the fifth raceway 9 to 1.6MPa, makes the seawater smoothly pass through microfiltration membrane 101, reaches the effect of filtering bacterium and tiny particulate matter.
The eighth water delivery pipe 15 is further fixedly connected with a disinfection device 151 matched with the eighth water delivery pipe, a disinfectant used for killing pathogenic microorganisms is arranged inside the disinfection device 151, and is set to be bleaching powder or bleaching powder, so that the pathogenic microorganisms in seawater can be effectively killed, and the breeding effect is improved.
The inner wall of the constant-temperature water tank 16 is provided with a plurality of uniformly distributed electric heating rods 161, the outer wall of the constant-temperature water tank 16 is fixedly provided with a controller 162 matched with the electric heating rods 161, the water temperature in the constant-temperature water tank 16 is set to be 28 ℃, and the controller 162 is further electrically connected with the water delivery pump 23, the electromagnetic valve 25 and the booster pump 91, so that the controller 162 can comprehensively control the overall working state.
On the other hand, the invention provides the following technical scheme: a water for shrimp culture prepared by the method for producing a water for shrimp culture described in any one of the above.
The comparison result of preparing 500 ton/day 30 per mill concentrated seawater by membrane separation technique with seawater with salinity of 19 per mill and preparing 500 ton/day 30 per mill concentrated seawater by crude salt is shown in table 1.
TABLE 1
Wherein, the price of the crude salt is 390 yuan per ton, the electricity price is 0.8 yuan per degree, the price of the tap water is 2.2 yuan per ton, the total price of the equipment is 330 ten thousand yuan, the depreciation life is 20 years, the depreciation is 15 ten thousand per year, the depreciation of the equipment is 1250 yuan per day according to 120 days of annual utilization.
Such a system may save costs each day: 2145-961.1-1183.9 yuan/day, the cost saving rate is 1183.9-2145-55.2%, and the annual cost saving rate can reach 14.2068 ten thousand yuan/year according to 120 days/year.
The greater income is that the survival rate of the litopenaeus vannamei offspring seeds is improved by more than 20 percent, and the market value of the litopenaeus vannamei is improved.
In conclusion, the invention has the following beneficial effects:
1. the seawater is subjected to reverse osmosis separation through reverse osmosis treatment to obtain concentrated seawater and fresh water, a method for preparing the concentrated seawater by using crude salt is replaced, the preparation cost of the shrimp culture water is remarkably reduced, the culture cost of the litopenaeus vannamei is further reduced, bacteria and impurities in the seawater are removed through primary filtration, secondary filtration, tertiary filtration and ultrafiltration treatment, and the culture effect of the litopenaeus vannamei is effectively improved;
2. through setting up constant temperature water tank 16 and degassing unit 151, can avoid the invasion and harm of nature sea area pollutant pathogenic factor, improve the survival rate that litopenaeus vannamei bred and promote the seed quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.
Claims (8)
1. A preparation method of water for shrimp cultivation is characterized by comprising the following steps:
step one, primary precipitation: natural seawater is introduced into the reservoir (2) through the arrangement of the first water conveying pipe (1), and silt in the seawater is naturally settled in the reservoir (2);
step two, secondary precipitation: introducing the upper-layer seawater treated in the step one into a dark sedimentation tank (4) by arranging a second water conveying pipe (3), and naturally settling floating algae in the seawater in the dark sedimentation tank (4);
step three, primary filtration: introducing the upper-layer seawater treated in the step two into a subsurface flow type sewage purification device (6) for filtration by arranging a third water delivery pipe (5), and filtering organic matters and heavy metals in the seawater by the subsurface flow type sewage purification device (6);
step four, secondary filtration: conveying the seawater treated in the step three to a sand filtering device (8) by arranging a fourth water conveying pipe (7), and filtering suspended solid and colloidal substances in the seawater by the sand filtering device (8) to reduce the turbidity of the seawater;
step five, three-stage filtration: conveying the seawater treated in the fourth step into a microfiltration device (10) by arranging a fifth water conveying pipe (9), wherein a microfiltration membrane (101) is arranged in the microfiltration device (10), and the seawater is filtered in the microfiltration device (10) through the microfiltration membrane (101) to filter bacteria and fine particles;
sixthly, reverse osmosis treatment: conveying the seawater treated in the step five to a reverse osmosis treatment device (12) by arranging a sixth water conveying pipe (11), and performing reverse osmosis separation on the seawater by the reverse osmosis treatment device (12) to obtain concentrated seawater and fresh water which are respectively positioned at two sides of a reverse osmosis membrane (121), wherein the salinity of the concentrated seawater is set to be 30-32 per mill;
step seven, ultrafiltration treatment: concentrated seawater is conveyed into an ultrafiltration device (14) through a seventh conveying pipe (13), the size of a gap of the ultrafiltration device (14) is set to be 0.002-0.1 mu m, particles and impurities are intercepted by the concentrated seawater through the ultrafiltration device (14), and colloids, proteins, microorganisms and macromolecular organic matters are effectively blocked;
step eight, constant temperature control: conveying the seawater treated in the step seven to a constant temperature water tank (16) by arranging an eighth water conveying pipe (15) to obtain water for culturing the shrimps suitable for culturing the litopenaeus vannamei;
wherein, the reservoir (2), the dark sedimentation tank (4), the sand filtration device (8), the reverse osmosis treatment device (12) and the constant temperature water tank (16) are internally provided with a liquid level meter (17), a pH indicator (18), a salinity meter (19) and a thermometer (20) which are matched with each other, and the first water pipe (1), the second water pipe (3), the third water pipe (5), the fourth water pipe (7), the fifth water pipe (9), the sixth water pipe (11), the sixth first water pipe (1) and the eighth water pipe (15) are respectively provided with a water delivery pump (23).
2. The method for producing water for shrimp rearing according to claim 1, characterized by comprising: the left side and the right side of the water delivery pump (23) are both provided with one-way stop valves (24), and one side of the water delivery pump (23) is also provided with an electromagnetic valve (25) matched with the water delivery pump.
3. The method for producing water for shrimp rearing according to claim 1, characterized by comprising: the sedimentation time of cistern (2) and dark sedimentation pond (4) sets up to 12h ~ 72h, 6h ~ 48h respectively, and the slant is provided with coarse grid (21) and fine grid (22) of looks adaptation in cistern (2), coarse grid (21) and fine grid (22) parallel arrangement each other, cistern (2) with the junction of second raceway (3) and first raceway (1) be located the upper and lower both sides of coarse grid (21) respectively, evenly laid light screen (41) on dark sedimentation pond (4).
4. The method for producing water for shrimp rearing according to claim 1, characterized by comprising: the sand filter device (8) comprises at least two mutually connected quartz sand filters (81).
5. The method for producing water for shrimp rearing according to claim 1, characterized by comprising: the fifth water conveying pipe (9) is also provided with a booster pump (91), and the booster pump (91) raises the pressure of the seawater passing through the fifth water conveying pipe (9) to 1.6-6.9 MPa.
6. The method for producing water for shrimp rearing according to claim 1, characterized by comprising: the eighth water delivery pipe (15) is also fixedly connected with a disinfection device (151) matched with the eighth water delivery pipe, and a disinfectant for killing pathogenic microorganisms is arranged in the disinfection device (151).
7. The method for preparing water for cultivating shrimps according to claim 1, wherein a plurality of uniformly distributed electric heating rods (161) are arranged on the inner wall of the constant temperature water tank (16), a controller (162) matched with the electric heating rods (161) is fixedly arranged on the outer wall of the constant temperature water tank (16), and the temperature of water in the constant temperature water tank (16) is set to be 20-35 ℃.
8. A water for shrimp culture produced by the method for producing a water for shrimp culture according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112159012A (en) * | 2020-09-28 | 2021-01-01 | 广东海洋大学 | Prawn seedling breeding source water treatment system and method |
| CN112429866A (en) * | 2020-10-20 | 2021-03-02 | 浙江省海洋水产养殖研究所 | Seawater is grown seedlings and is used water reverse osmosis enrichment facility |
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