CN111268854A - Saline-alkali mud flat aquaculture water body circulation system - Google Patents
Saline-alkali mud flat aquaculture water body circulation system Download PDFInfo
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- CN111268854A CN111268854A CN201911343855.3A CN201911343855A CN111268854A CN 111268854 A CN111268854 A CN 111268854A CN 201911343855 A CN201911343855 A CN 201911343855A CN 111268854 A CN111268854 A CN 111268854A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 239000003513 alkali Substances 0.000 title claims abstract description 25
- 238000009360 aquaculture Methods 0.000 title claims abstract description 13
- 244000144974 aquaculture Species 0.000 title claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 238000000746 purification Methods 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 7
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 5
- 238000003973 irrigation Methods 0.000 claims abstract description 5
- 230000002262 irrigation Effects 0.000 claims abstract description 5
- 241000196324 Embryophyta Species 0.000 claims description 47
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- 210000003608 fece Anatomy 0.000 claims description 5
- 241000251468 Actinopterygii Species 0.000 claims description 4
- 235000015097 nutrients Nutrition 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 241000201920 Salicornia bigelovii Species 0.000 claims description 2
- 230000035755 proliferation Effects 0.000 claims description 2
- 241000201895 Salicornia Species 0.000 claims 2
- 241000209082 Lolium Species 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 7
- 239000003621 irrigation water Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
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- 229910052757 nitrogen Inorganic materials 0.000 description 5
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- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 2
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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
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- 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
Abstract
The invention discloses a saline-alkali beach culture water body circulation system, which belongs to the technical field of aquaculture industry and comprises the following four parts: the device comprises a high-efficiency irrigation and drainage system consisting of a water inlet channel and a water drainage channel, a biological purification system consisting of a salt-tolerant plant pool and a sedimentation pool, a chemical purification system consisting of a water turning pump station and a filtering and purifying pool, and a water quality detection system consisting of a water quality detector and a water drainage gate. The connection mode of each part is as follows: the system can effectively reduce the salinity of irrigation water, and realize the cyclic utilization of brackish water resources and the water-saving improvement of saline-alkali soil.
Description
Technical Field
The invention relates to a saline-alkali beach culture water body circulation system, and belongs to the technical field of aquaculture industry.
Background
The tidal flat is a dynamically-changed sea-land transition zone, is a marine region which is developed and utilized by human beings at the earliest, the total area of the marine tidal flat in China is more than 200 hectares, the national tidal flat culture area in 2018 is more than 90 hectares, the fishery yield exceeds 850 million tons, accounts for about 45 percent of the marine culture yield, and plays an important role in marine protein output. In the traditional culture mode, the fed baits and the feces of cultured organisms are directly discharged into a water body, so that the pollution condition of the culture tail water is increasingly severe. Therefore, the treatment mode of the aquaculture tail water and how to recycle the aquaculture tail water are problems which are urgently needed to be solved by the aquaculture industry.
At present, the purification of the culture tail water mainly comprises three types of pond purification, facility purification and wetland purification. Pond purification is one of the main forms of aquaculture tail water treatment, and mainly comprises basic principles of degradation, precipitation, oxidation, adsorption, filtration and the like. However, more suspended matters exist in the water in the filter tank, and workers need to clean the water regularly or replace the filler, so that a large amount of manpower and material resources are needed, and the water is not beneficial to saving and utilizing resources. The basic principles of facility purification and pond purification are similar, but the facility purification is higher in specialty, more detailed in operation technology, higher in required cost and supported by enough economic strength, pigments, proteins, organic debris and the like in water are removed by using the adsorption effect of activated carbon in a common mode, and the water treatment amount is small, the cost is high and the application range is small. Compared with the two purification modes, the wetland purification is a complex multifunctional ecosystem, and impurities in water are removed by utilizing various modes such as decomposition, chemical adsorption, physical filtration and the like of microorganisms, so that the wetland purification has an obvious effect, and particularly has a strong cleaning effect on nitrogen and phosphorus elements in the aquaculture tail water. The wetland purification can be used for planting wetland plants according to the actual pollution condition of the water area, and the purification effect on the water body is achieved by utilizing the functions of the plants through the optimization of the water area engineering design and the process flow. And plant cultivation not only can promote the oxygen supply of the water area, but also can beautify conveniently through artificial design. Part of the aquatic plants can also be used as feed for grass carp and the like, so that the culture cost is effectively reduced. However, it is worth noting that many filtering and purifying systems suitable for fresh water cannot work normally in the purification of the mudflat aquaculture water body due to the high salinity of the mudflat water body; in addition, the wetland area required by wetland purification is large, and simultaneously, because the beach soil has low nutrient content and high salinity, the difficulty of screening and culturing wetland plants in saline-alkali beach areas is large. Therefore, the saline-alkali beach area is lack of a simple and practical cultivation tail water treatment technology
Disclosure of Invention
The purpose of the invention is as follows:
the invention aims to provide a saline-alkali beach culture water body circulation system which is low in cost, small in occupied area and high in efficiency aiming at the current situation that a simple and practical culture tail water treatment technology is lacked in a saline-alkali beach area, so that the content of water body pollutants can be effectively reduced, and the recycling of brackish water resources and the standard-reaching discharge of saline-alkali beach culture water bodies are realized.
The invention is realized by the following technical scheme:
1. the invention relates to a saline-alkali beach culture water body circulation system, which comprises the following parts:
(1) the efficient irrigation and drainage system consists of a water inlet channel and a water drainage channel;
(2) a biological purification system consisting of a salt-tolerant plant pool and a sedimentation pool;
(3) a chemical purification system consisting of a water turning pump station and a filtering and purifying tank;
(4) the water quality detection system consists of a water quality detector and a drainage gate.
(5) The connection sequence of each device is as follows: the system comprises an inlet channel, an aquaculture pond, a drainage channel, a salt-tolerant plant pool, a sedimentation tank, a pump station for turning over water, a filtration and purification tank, a water quality detector, a drainage gate, an inlet channel and a salt-tolerant plant pool.
2. The invention relates to a saline-alkali beach culture water body circulation system, which comprises the following steps:
(1) opening the water inlet channel, and introducing the water body reaching the standard into the culture pond through the water inlet channel for culture and proliferation;
(2) when the water body needs to be purified, opening a drainage channel, and discharging the culture tail water into a salt-tolerant plant pool;
(3) after the plants fully absorb the salt and the nutrients of part of the water body, discharging the water from the salt-tolerant plant pool into a sedimentation pool;
(4) dead organisms, fish excreta, residual bait decomposition products and the like in the water are precipitated in a sedimentation tank, and the water body is pumped into a filtering and purifying tank by a water turning pump station after passing through a cylindrical filter screen at the center of the sedimentation tank;
(5) water is discharged through a filtering hole on the wall of the filtering and purifying tank, and a microporous ceramic filter element is arranged in the filtering hole to further purify the water body;
(6) the water quality detector is arranged on the outer side of the filter hole, the water quality of the filtered water body is monitored in real time, if the water quality meets the discharge standard, the water discharge gate discharges the water into the water inlet channel for cyclic utilization, and if the water quality does not meet the discharge standard, the water is discharged into the salt-tolerant plant pool for next round of purification until the water content meets the discharge standard.
3. The cultivation species of salt-tolerant plants such as salicornia bigelovii Hayata No. 1, Suaeda salsa No. 1, Sal pan Cyanina gum No. 1, and Sal-Lolium perenne No. 1 are mainly planted in the salt-tolerant plant pond, and the area of the salt-tolerant plant pond and the area of the culture pond are 1: 5-1: 20. The filter purification tank is internally provided with a microporous ceramic filter element pipe in the filter hole, the length of the filter element pipe is less than 50-100cm, the pore diameter is 100-300 mu m, and the porosity is 30-50%.
Drawings
FIG. 1 is a schematic structural view of a saline-alkali beach culture water body circulation system
In the figure: 1. a water inlet channel; 2. a culture pond; 3. a drainage channel; 4. a salt tolerant plant pond; 5. a sedimentation tank; 6. a water turning pump; 7. a filtering and purifying tank; 8. a water quality detection pool; 9. a drain gate;
Detailed Description
Example 1 was carried out: a saline-alkali beach culture water body circulation system is applied to a crucian culture pond in Jiangsu salt city, Dafeng beach, the area is 200 mu, and the salinity of surface micro saline water is 2.14 g/kg.
The implementation method comprises the following steps:
1. the saline-alkali beach culture water body circulation system is constructed in saline-alkali soil, and specifically comprises a high-efficiency irrigation and drainage system consisting of a water inlet channel and a drainage channel, a biological purification system consisting of a salt-tolerant plant pond and a sedimentation tank, a chemical purification system consisting of a water turning pump station and a filtering and purifying pond, and a water quality detection system consisting of a water quality detector and a drainage gate. The connection sequence of each device is as follows: the system comprises an inlet channel, an aquaculture pond, a drainage channel, a salt-tolerant plant pool, a sedimentation tank, a pump station for turning over water, a filtration and purification tank, a water quality detector, a drainage gate, an inlet channel and a salt-tolerant plant pool.
The halotolerant plant pond is planted with halophyte No. 1, coastal Suaeda salsa No. 1, Sal pan Cyanine gum No. 1, and Lolium perenne No. 1, and the area of the halotolerant plant pond and the saline-alkali land is 1: 5. The filtering holes of the filtering and purifying tank are internally provided with a microporous ceramic filter element pipe, the length of the filter element pipe is 50cm, the pore diameter is 100 mu m, and the porosity is 30%.
2. The specific operation method comprises the following steps:
(1) opening the water inlet channel, introducing fresh water into the culture pond through the water inlet channel, and fully dissolving salt in the soil after culturing for several days;
(2) opening a drainage channel, and draining the culture tail water into a salt-tolerant plant pond;
(3) after partial salt and nutrients are fully absorbed by the plants, discharging water from the salt-tolerant plant pool into a sedimentation pool;
(4) dead organisms, fish excreta, residual bait decomposition products and the like in the water are precipitated in a sedimentation tank, and the water body is pumped into a filtering and purifying tank by a water turning pump station after passing through a cylindrical filter screen at the center of the sedimentation tank;
(5) water is discharged through a filtering hole on the wall of the filtering and purifying tank, and a microporous ceramic filter element is arranged in the filtering hole to further purify the water body;
(6) the water quality detector is arranged on the outer side of the filter hole, the filtered water quality is monitored in real time, if the water quality meets the discharge standard, the water discharge gate discharges the water into the water inlet channel for cyclic utilization, and if the water quality does not meet the discharge standard, the water is discharged into the salt-tolerant plant pool for next round of purification until the water content meets the discharge standard.
The implementation effect is as follows:
through detection, the salinity of the culture tail water and the water body of the drainage channel is 3.75g/kg, 420mg/L of suspended matters, 35.7mg/L of permanganate index, 7.8mg/L of total nitrogen and 13.4mg/L of total phosphorus, after single circulation of the salt-tolerant plant pool, the sedimentation pool and the filtering and purifying pool, the salinity of the water body is 2.36g/kg, 85mg/L of suspended matters, 21.7mg/L of permanganate index, 0.8mg/L of total nitrogen and 4.4mg/L of total phosphorus, and the requirements of the national culture tail water discharge standard are met.
Example 2 was carried out: a saline-alkali beach culture water body circulation system is applied to a saline-alkali beach culture pond, the area is 350 mu, the average salinity of soil is 3.46g/kg, and the initial salinity of water body is 2.67 g/kg.
The implementation method comprises the following steps:
1. the system comprises a high-efficiency irrigation and drainage system consisting of a water inlet channel and a drainage channel, a biological purification system consisting of a salt-tolerant plant pool and a sedimentation tank, a chemical purification system consisting of a water turning pump station and a filtering and purifying pool, and a water quality detection system consisting of a water quality detector and a drainage gate. The connection sequence of each device is as follows: the system comprises a water inlet channel-culture system, a biological purification system consisting of a salt-tolerant plant pool and a sedimentation pool, a chemical purification system consisting of a water turning pump station and a filtering and purifying pool, and a water quality detection system consisting of a water quality detector and a drainage gate. The connection sequence of each device is as follows: the system comprises an inlet channel, a culture pond, a drainage channel, a salt-tolerant plant pond, a sedimentation tank, a water turning pump station, a filtering and purifying tank, a water quality detector, a drainage gate, an inlet channel and a salt-tolerant plant pond.
The halotolerant plant pond is planted with halophyte No. 1, coastal Suaeda salsa No. 1, salt pan cyanine glue No. 1 and salt Lolium multiflorum No. 1, and the area of the halotolerant plant pond and the area of the saline-alkali soil are 1: 20. The filtering holes of the filtering and purifying tank are internally provided with a microporous ceramic filter element pipe, the length of the filter element pipe is 80cm, the pore diameter is 300 mu m, and the porosity is 50%.
2. The specific operation method comprises the following steps:
(1) opening the water inlet channel, introducing fresh water into the culture pond through the water inlet channel, and fully dissolving salt in the soil after culturing for several days;
(2) opening a drainage channel, and draining the culture tail water into a salt-tolerant plant pond;
(3) after partial salt and nutrients are fully absorbed by the plants, discharging water from the salt-tolerant plant pool into a sedimentation pool;
(4) dead organisms, fish excreta, residual bait decomposition products and the like in the water are precipitated in a sedimentation tank, and the water body is pumped into a filtering and purifying tank by a water turning pump station after passing through a cylindrical filter screen at the center of the sedimentation tank;
(5) water is discharged through a filtering hole on the wall of the filtering and purifying tank, and a microporous ceramic filter element is arranged in the filtering hole to further purify the water body;
(6) the water quality detector is arranged on the outer side of the filter hole, the filtered water quality is monitored in real time, if the water quality meets the discharge standard, the water discharge gate discharges the water into the water inlet channel for cyclic utilization, and if the water quality does not meet the discharge standard, the water is discharged into the salt-tolerant plant pool for next round of purification until the water content meets the discharge standard.
The implementation effect is as follows:
through detection, the salinity of the culture tail water and the water body of the drainage channel is 3.25g/kg, 340mg/L of suspended matters, 34.7mg/L of permanganate index, 6.6mg/L of total nitrogen and 11.7mg/L of total phosphorus, after twice circulation through a salt-tolerant plant pool, a sedimentation pool and a filtering and purifying pool, the salinity of the water body is 2.05g/kg, 65mg/L of suspended matters, 13.7mg/L of permanganate index, 0.6mg/L of total nitrogen and 3.6mg/L of total phosphorus, and the requirements of the national culture tail water discharge standard are met.
Claims (5)
1. A saline-alkali beach culture water body circulation system is characterized by comprising the following parts:
(1) the efficient irrigation and drainage system consists of a water inlet channel and a water drainage channel;
(2) a biological purification system consisting of a salt-tolerant plant pool and a sedimentation pool;
(3) a chemical purification system consisting of a water turning pump station and a filtering and purifying tank;
(4) the water quality detection system consists of a water quality detector and a drainage gate.
(5) The connection sequence of each device is as follows: the system comprises an inlet channel, an aquaculture pond, a drainage channel, a salt-tolerant plant pool, a sedimentation tank, a pump station for turning over water, a filtration and purification tank, a water quality detector, a drainage gate, an inlet channel and a salt-tolerant plant pool.
2. A method for using a saline-alkali beach culture water body circulation system is characterized by comprising the following steps:
(1) opening the water inlet channel, and introducing the water body reaching the standard into the culture pond through the water inlet channel for culture and proliferation;
(2) when the water body needs to be purified, opening a drainage channel, and discharging the culture tail water into a salt-tolerant plant pool;
(3) after the plants fully absorb the salt and the nutrients of part of the water body, discharging the water from the salt-tolerant plant pool into a sedimentation pool;
(4) dead organisms, fish excreta, residual bait decomposition products and the like in the water are precipitated in a sedimentation tank, and the water body is pumped into a filtering and purifying tank by a water turning pump station after passing through a cylindrical filter screen at the center of the sedimentation tank;
(5) water is discharged through a filtering hole on the wall of the filtering and purifying tank, and a microporous ceramic filter element is arranged in the filtering hole to further purify the water body;
(6) the water quality detector is arranged on the outer side of the filter hole, the water quality of the filtered water body is monitored in real time, if the water quality meets the discharge standard, the water discharge gate discharges the water into the water inlet channel for cyclic utilization, and if the water quality does not meet the discharge standard, the water is discharged into the salt-tolerant plant pool for next round of purification until the water content meets the discharge standard.
3. The method for using the water circulation system for the saline-alkali beach culture is characterized in that the salt-tolerant plant pond in claim 1 is mainly planted with the cultivars of salt-tolerant plants such as salicornia bigelovii, salicornia gum 1 and salicornia multiflora lolium 1.
4. The method for using the saline-alkali beach culture water body circulation system is characterized in that the ratio of the area of the salt-tolerant plant pool to the area of the culture pool in claim 1 is 1: 5-1: 20.
5. A method for using a circulating system of a culture water body in a saline-alkali beach is characterized in that a microporous ceramic filter core pipe is arranged in a filter hole of a filtering and purifying tank in claim 1, the length of the filter core pipe is less than 50-100cm, the pore diameter is 100-300 mu m, and the porosity is 30-50%.
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| CN113875677A (en) * | 2021-09-22 | 2022-01-04 | 河海大学 | Ecological purification system for tail water of lobster breeding and operation method |
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| CN112674016A (en) * | 2020-12-08 | 2021-04-20 | 中国水产科学研究院黄海水产研究所 | Coastal artificial wetland ecological maintenance system and ecological maintenance method |
| CN113875677A (en) * | 2021-09-22 | 2022-01-04 | 河海大学 | Ecological purification system for tail water of lobster breeding and operation method |
| CN113875677B (en) * | 2021-09-22 | 2022-10-18 | 河海大学 | Ecological purification system for tail water of lobster breeding and operation method |
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