CN112159038A - System and method for treating and recycling tail water of aquaculture pond - Google Patents
System and method for treating and recycling tail water of aquaculture pond Download PDFInfo
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- CN112159038A CN112159038A CN202011039528.1A CN202011039528A CN112159038A CN 112159038 A CN112159038 A CN 112159038A CN 202011039528 A CN202011039528 A CN 202011039528A CN 112159038 A CN112159038 A CN 112159038A
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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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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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
- C02F7/00—Aeration of stretches of water
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a system and a method for treating and recycling tail water of an aquaculture pond, which comprises a drainage sand well, a sedimentation tank, a biological treatment tank and a chemical treatment tank; the sand drainage well comprises a culture tail water discharge device, an unqualified tail water discharge device, a standard tail water discharge control device and a sediment collection control device; the sedimentation tank comprises a sedimentation tank tail water inlet, a sedimentation tank tail water outlet, a sediment outlet control device, a sedimentation tank water-stop wall and a particle sediment sedimentation area; the biological treatment tank comprises a biological treatment tank tail water inlet, a biological treatment tank tail water discharge device, a precipitate discharge control device, a biological treatment tank water-stop wall and a particle precipitate deposition area; the chemical treatment tank comprises a chemical treatment tank tail water inlet device, a recoverable tail water discharge control device, a tail water discharge control device and a fountain type aerator. The invention integrates three treatment means of physics, chemistry and biology, changes the organic wastes into valuables, realizes resource recycling and has higher ecological benefit.
Description
Technical Field
The invention relates to a system and a method for treating and recycling aquaculture tail water.
Background
In recent years, the demand of aquatic products in China is increased year by year, the scale of aquaculture is also gradually enlarged, but the traditional culture mode with large discharge and amplification still occupies a leading position, the discharge amount of culture tail water is increased year by year, so that the concentrations of organic matters and inorganic phosphorus in offshore areas are obviously increased, inorganic nitrogen generally exceeds the standard, and the ecological environment of water areas is continuously deteriorated. Therefore, the treatment and the reutilization of the aquaculture tail water become key links for researching the sustainable development of aquaculture. At present, a great deal of technical research and application are developed in the field of aquaculture tail water treatment at home and abroad, and the technology can be mainly divided into a physical treatment technology, a chemical treatment technology and a biological treatment technology. The physical treatment technology mainly comprises mechanical filtration and foam separation treatment technology; in the aspect of chemical treatment, besides using chemical agents such as formaldehyde, chlorine-containing disinfectants, quicklime, flocculating agents and the like, ozone is increasingly commonly applied to tail water treatment due to the characteristics of strong oxidizing property, high possibility of decomposition and no residue; the technical means of biological treatment comprise aquatic plants, aquatic animals, constructed wetlands, microorganism purification and the like. Wherein, the microbial purification technology applying composite microbial ecological preparation products such as photosynthetic bacteria, bacillus, 'probiotic' bacteria, EM bacteria and the like is the most common means for treating the culture tail water.
Combining different treatment technologies, the current aquaculture tail water treatment modes comprise pond purification, facility purification, wetland purification and the like. The treatment effect of pond purification is influenced by the filter filler, the filler needs to be cleaned and replaced regularly, and a large amount of manpower and material resources are consumed; the content of facility purification technology is higher, the treatment effect is obvious, the occupied area is small and the like, and the defects are that the cost is higher and the application in practical production is less; compared with the prior art, the artificial wetland has the advantages of good treatment effect, low cost, low energy consumption, good ecological benefit and the like, the purification effect is related to the wetland type, the filler thickness, the filler type, the plant type and the plant quantity, the dirt-removing capacity is limited, overload operation can occur when a large amount of culture tail water is treated, the treatment effect is difficult to guarantee, and the influence of climate is great, and the local adjustment is needed.
Although the research on the existing aquaculture tail water treatment technology has been greatly developed, in the current aquaculture production practice, many farmers and production enterprises usually only pay attention to economic benefits, the environmental protection consciousness is weak, and a set of complete tail water treatment facilities is lacked. Therefore, the development of a tail water treatment process with high efficiency, low consumption and low cost becomes a key point and a breakthrough for solving the problems of tail water discharge, water resource waste and the like of pond culture in China.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a system and a method for treating and recycling tail water of an aquaculture pond.
In order to achieve the purpose, the invention adopts the technical scheme that:
a system for treating and recycling tail water of an aquaculture pond sequentially comprises a drainage sand well, a sedimentation tank, a biological treatment tank and a chemical treatment tank according to the tail water treatment sequence; the drainage sand well comprises a culture tail water discharge control device, an unqualified tail water discharge control device, a qualified tail water discharge control device and a sediment collection control device of a sedimentation tank and a biological treatment tank; the sedimentation tank comprises a sedimentation tank tail water inlet device, a sedimentation tank tail water outlet device, a sedimentation tank sediment outlet control device, a sedimentation tank water-stop wall and a sedimentation tank particle sediment sedimentation area; the biological treatment tank comprises a biological treatment tank tail water inlet device, a biological treatment tank tail water outlet device, a biological treatment tank sediment outlet control device, a biological treatment tank water-stop wall and a biological treatment tank particle sediment deposition area; the chemical treatment tank comprises a chemical treatment tank tail water inlet device, a recyclable tail water discharge control device, a chemical treatment tank tail water discharge control device and a fountain type aerator.
Furthermore, the sedimentation tank water-stop wall and the biological treatment tank water-stop wall are respectively arranged between the sedimentation tank and the biological treatment tank, so that the sedimentation tank and the biological treatment tank form an n shape; the bend of the sedimentation tank is provided with a sedimentation tank particle sediment deposition area with a slightly lower bottom, and the bend of the biological treatment tank is provided with a biological treatment tank particle sediment deposition area with a slightly lower bottom.
Furthermore, the tail water discharge device of the sedimentation tank and the tail water discharge device of the biological treatment tank are PVC pipes with the height slightly lower than the depth of the corresponding tank, and small holes with the diameter of 0.5-1.0 cm are densely distributed at the upper ends of the PVC pipes.
Further, the area of the sedimentation tank and the chemical treatment tank is 3% -5% of the area of the aquaculture pond; the area of the biological treatment pond is 5-8% of the area of the aquaculture pond.
Further, the fountain aerator is arranged in the center of the chemical treatment tank.
The invention also discloses a tail water treatment and recycling method using the system, which comprises the following steps:
tail water entering the system is firstly subjected to coarse filtration by a drainage sand well to remove waste such as dead shrimps, shrimp shells, residual baits, excrement and the like, then is subjected to shunt treatment, the tail water reaching the standard after detection can be directly discharged into the sea, the tail water failing to reach the standard after detection enters a sedimentation tank, is precipitated for a period of time, and then enters a biological treatment tank after being filtered, and the water quality is purified in the biological treatment tank by adopting a shellfish-algae mixed culture mode; the sediments in the sedimentation tank and the biological treatment tank are collected and then enter the drainage sand well again; the tail water after biological treatment enters a chemical treatment tank after being filtered, the tail water reaching the standard after being aerated and disinfected by a fountain type aerator is directly discharged into the sea, and if the tail water reaches the standard of water for cultivation, the tail water can be pumped back to a reservoir for recycling.
The invention has the beneficial effects that: the invention discloses an aquaculture pond tail water treatment and recycling system, which is a comprehensive aquaculture tail water treatment mode integrating three treatment means of physics, chemistry and biology, innovatively applies a runway pool structure in a tail water treatment process to increase the tail water flowing distance so as to promote the deposition of waste, and adds an area with a slightly lower bottom at a bend so as to collect particle sediment, thereby reducing the filtration load of tail water. The collected tail water sediment returns to the drainage sand well again, and the organic wastes can be changed into valuables through a series of ways such as fermentation, composting and processing after separation, so that resource recycling is realized, and the method has high ecological benefit. In the last chemical treatment process, the tail water which reaches the standard of aquaculture water after treatment is recycled, so that the problem of shortage of water resources in China is solved, and the sustainable development strategy of aquaculture is met.
Description of the drawings:
FIG. 1 is a schematic view of an aquaculture pond tailwater treatment and recycling system of the present invention;
the number designations in the figures are: 1. a sand drainage well; 2. a sedimentation tank; 3. a biological treatment tank; 4. a chemical treatment tank; 5. a cultivation tail water discharge control device; 6. a tail water discharge control device which does not reach the standard; 7. a standard tail water discharge control device; 8. the tail water of the sedimentation tank enters the device; 9. a sedimentation tank tail water discharge device; 10. a control device for discharging sediment in the sedimentation tank; 11. entering tail water of the biological treatment tank into a device; 12. a biological treatment tank tail water discharge device; 13. a control device for discharging the sediment in the biological treatment tank; 14. a control device for collecting sediments in the sedimentation tank and the biological treatment tank; 15. the tail water of the chemical treatment pool enters the device; 16. a recyclable tail water discharge control device; 17. a chemical treatment tank tail water discharge control device; 18. a fountain type aerator; 19. a sedimentation tank water-stop wall; 20. a water-proof wall of the biological treatment pool; 21. a sedimentation tank particle sediment sedimentation area; 22. a sedimentation area of the biological treatment pool particle sediment.
Detailed Description
The invention will be further described in detail with reference to the following embodiments, and as shown in fig. 1, the system for treating and recycling the tail water of the aquaculture pond sequentially comprises a drainage sand well 1, a sedimentation tank 2, a biological treatment tank 3 and a chemical treatment tank 4 according to the tail water treatment sequence; the drainage sand well 1 comprises a culture tail water discharge control device 5, an unqualified tail water discharge control device 6, an qualified tail water discharge control device 7 and a sediment collection control device 14 of a sedimentation tank and a biological treatment tank; the sedimentation tank 2 comprises a sedimentation tank tail water inlet device 8, a sedimentation tank tail water outlet device 9, a sedimentation tank sediment outlet control device 10, a sedimentation tank water-stop wall 19 and a sedimentation tank particle sediment sedimentation area 21; the biological treatment tank 3 comprises a biological treatment tank tail water inlet device 11, a biological treatment tank tail water outlet device 12, a biological treatment tank sediment outlet control device 13, a biological treatment tank water-stop wall 20 and a biological treatment tank particle sediment deposition area 22; the chemical treatment tank 4 comprises a chemical treatment tank tail water inlet device 15, a recoverable tail water discharge control device 16, a chemical treatment tank tail water discharge control device 17 and a fountain aerator 18.
The tail water treatment and recycling method and process of the system are as follows:
the tail water entering the system is firstly filtered roughly by a drainage sand well 1 to remove dead shrimps, shrimp shells, residual baits, excrement and the like, and then is subjected to flow division treatment. The tail water which reaches the standard after detection can be directly discharged into the sea, and the tail water which does not reach the standard after detection enters the sedimentation tank 2. The sedimentation tank 2 is similar to a runway tank, the area of the sedimentation tank is about 3% -5% of that of the culture tank, a water-stop wall 19 is arranged in the middle, and the bottom of the bend is slightly lower and is a sedimentation tank particle sediment sedimentation area 21. The tail water discharge device 9 of the sedimentation tank is a PVC pipe with the height slightly lower than the depth of the tank, and small holes of 0.5-1.0 cm are densely distributed at the upper end of the PVC pipe. After a certain time of sedimentation, tail water enters a biological treatment tank 3 after being filtered, the water quality is purified in the tank by adopting a shellfish-algae polyculture mode, the structure of the biological treatment tank is similar to that of a sedimentation tank 2, the area of the biological treatment tank is about 5% -8% of that of a culture tank, and a tail water discharge device 12 of the biological treatment tank is also similar to that of a tail water discharge device 9 of the sedimentation tank. The sediments in the sedimentation tank 2 and the biological treatment tank 3 are collected and then enter the drainage sand well 1 again, the tail water after the biological treatment enters the final chemical treatment process after being filtered, the area of the chemical treatment tank 4 is close to that of the sedimentation tank 2, a fountain aerator 18 is arranged in the center, the tail water after being subjected to aeration and disinfection is directly discharged into the sea, and if the tail water reaches the standard of aquaculture water, the tail water can be further pumped back to the reservoir for recycling.
The above description is only for the purpose of illustrating the technical solutions of the present invention, and those skilled in the art can make simple modifications or equivalent substitutions on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The utility model provides an aquaculture pond tail water treatment and cyclic utilization system which characterized in that: the system comprises a drainage sand well, a sedimentation tank, a biological treatment tank and a chemical treatment tank in turn according to the tail water treatment sequence; the drainage sand well comprises a culture tail water discharge control device, an unqualified tail water discharge control device, a qualified tail water discharge control device and a sediment collection control device of a sedimentation tank and a biological treatment tank; the sedimentation tank comprises a sedimentation tank tail water inlet device, a sedimentation tank tail water outlet device, a sedimentation tank sediment outlet control device, a sedimentation tank water-stop wall and a sedimentation tank particle sediment sedimentation area; the biological treatment tank comprises a biological treatment tank tail water inlet device, a biological treatment tank tail water outlet device, a biological treatment tank sediment outlet control device, a biological treatment tank water-stop wall and a biological treatment tank particle sediment deposition area; the chemical treatment tank comprises a chemical treatment tank tail water inlet device, a recyclable tail water discharge control device, a chemical treatment tank tail water discharge control device and a fountain type aerator.
2. The aquaculture pond tail water treatment and recycling system of claim 1, wherein: the sedimentation tank water-stop wall and the biological treatment tank water-stop wall are respectively arranged between the sedimentation tank and the biological treatment tank, so that the sedimentation tank and the biological treatment tank form an n shape; the bend of the sedimentation tank is provided with a sedimentation tank particle sediment deposition area with a slightly lower bottom, and the bend of the biological treatment tank is provided with a biological treatment tank particle sediment deposition area with a slightly lower bottom.
3. The aquaculture pond tail water treatment and recycling system of claim 2, wherein: the tail water discharge device of the sedimentation tank and the tail water discharge device of the biological treatment tank are PVC pipes with the height slightly lower than the depth of the corresponding tank, and small holes with the diameter of 0.5-1.0 cm are densely distributed at the upper ends of the PVC pipes.
4. The aquaculture pond tail water treatment and recycling system of claim 3, wherein: the area of the sedimentation tank and the chemical treatment tank is 3-5% of the area of the aquaculture pond; the area of the biological treatment pond is 5-8% of the area of the aquaculture pond.
5. The aquaculture pond tail water treatment and recycling system of claim 4, wherein: the fountain aerator is arranged in the center of the chemical treatment tank.
6. A method for treating and recycling tail water using the system of any one of claims 1 to 5, wherein: tail water entering the system is firstly subjected to coarse filtration by a drainage sand well to remove waste such as dead shrimps, shrimp shells, residual baits, excrement and the like, then is subjected to shunt treatment, the tail water reaching the standard after detection can be directly discharged into the sea, the tail water failing to reach the standard after detection enters a sedimentation tank, is precipitated for a period of time, and then enters a biological treatment tank after being filtered, and the water quality is purified in the biological treatment tank by adopting a shellfish-algae mixed culture mode; the sediments in the sedimentation tank and the biological treatment tank are collected and then enter the drainage sand well again; the tail water after biological treatment enters a chemical treatment tank after being filtered, the tail water reaching the standard after being aerated and disinfected by a fountain type aerator is directly discharged into the sea, and if the tail water reaches the standard of water for cultivation, the tail water can be pumped back to a reservoir for recycling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011039528.1A CN112159038A (en) | 2020-09-28 | 2020-09-28 | System and method for treating and recycling tail water of aquaculture pond |
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| CN202011039528.1A CN112159038A (en) | 2020-09-28 | 2020-09-28 | System and method for treating and recycling tail water of aquaculture pond |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093056A (en) * | 2022-07-18 | 2022-09-23 | 中农国际农业集团(广东)有限公司 | Aquaculture tail water treatment process |
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| CN204707771U (en) * | 2015-06-29 | 2015-10-21 | 象山蓝尚海洋科技有限公司 | cultivation tail water treatment system |
| CN108178447A (en) * | 2018-01-11 | 2018-06-19 | 浙江省淡水水产研究所 | A kind of shrimp culture tail water treatment system |
| CN109095710A (en) * | 2018-08-15 | 2018-12-28 | 浙江海洋大学 | A kind of prawn culturing tail water ecological treatment system |
| CN109730025A (en) * | 2019-01-25 | 2019-05-10 | 浙江省海洋水产研究所 | A kind of litopenaeus vannamei greenhouse intensive culture tail water processing unit |
| CN111204928A (en) * | 2020-01-17 | 2020-05-29 | 中国水产科学研究院黄海水产研究所 | Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method |
| CN111204934A (en) * | 2020-02-25 | 2020-05-29 | 福建省水产技术推广总站 | Breeding tail water treatment system |
-
2020
- 2020-09-28 CN CN202011039528.1A patent/CN112159038A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204707771U (en) * | 2015-06-29 | 2015-10-21 | 象山蓝尚海洋科技有限公司 | cultivation tail water treatment system |
| CN108178447A (en) * | 2018-01-11 | 2018-06-19 | 浙江省淡水水产研究所 | A kind of shrimp culture tail water treatment system |
| CN109095710A (en) * | 2018-08-15 | 2018-12-28 | 浙江海洋大学 | A kind of prawn culturing tail water ecological treatment system |
| CN109730025A (en) * | 2019-01-25 | 2019-05-10 | 浙江省海洋水产研究所 | A kind of litopenaeus vannamei greenhouse intensive culture tail water processing unit |
| CN111204928A (en) * | 2020-01-17 | 2020-05-29 | 中国水产科学研究院黄海水产研究所 | Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method |
| CN111204934A (en) * | 2020-02-25 | 2020-05-29 | 福建省水产技术推广总站 | Breeding tail water treatment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093056A (en) * | 2022-07-18 | 2022-09-23 | 中农国际农业集团(广东)有限公司 | Aquaculture tail water treatment process |
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Application publication date: 20210101 |