CN115093086A - Tail water treatment system based on ecological purification tank - Google Patents
Tail water treatment system based on ecological purification tank Download PDFInfo
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- CN115093086A CN115093086A CN202211009364.7A CN202211009364A CN115093086A CN 115093086 A CN115093086 A CN 115093086A CN 202211009364 A CN202211009364 A CN 202211009364A CN 115093086 A CN115093086 A CN 115093086A
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/02—Aerobic processes
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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
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- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention provides a tail water treatment system based on an ecological purification tank, which belongs to the technical field of sewage sludge treatment and comprises a sedimentation tank, a biochemical purification tank, a multi-nutrition-level ecological purification tank, a first filter dam, a second filter dam, a microorganism-plant-animal comprehensive purification wetland and a return water channel, wherein the sedimentation tank is used for being communicated with a tail water discharge end of an aquaculture pond, a plurality of aeration components are uniformly distributed in the biochemical purification tank, porous filter materials are added in the biochemical purification tank, the multi-nutrition-level ecological purification tank is used for ecologically and comprehensively treating and purifying the discharged aquaculture tail water, the first filter dam is arranged between the sedimentation tank and the biochemical purification tank, the second filter dam is arranged between the biochemical purification tank and the multi-nutrition-level ecological purification tank, one end of the return water channel is communicated with a water discharge end of the multi-nutrition-level ecological purification tank, the other end is communicated with the aquaculture pond, and the treatment and the reuse of the aquaculture tail water of the purification pond through an ecological technical means are realized, improving the treatment efficiency of treating the culture tail water and reducing the environmental pollution.
Description
Technical Field
The invention belongs to the technical field of sewage and sludge treatment, and particularly relates to a tail water treatment system based on an ecological purification tank.
Background
In the prior art, if the tail water or the sewage generated by industrial aquaculture is not treated or the water quality after treatment does not reach the standard, the tail water or the sewage is discharged outside, so that water resource waste and environmental pollution are caused, sewage treatment equipment is needed for treatment, the sewage treatment equipment is various, the sewage treatment equipment mainly treats the sewage by adopting a physical method or a chemical method or a method combining the physical method and the chemical method, a medicament is sometimes required to be added into the sewage treatment equipment, and the use of the medicament or the treatment of the sewage by the chemical method is not beneficial to ecological protection. Aiming at the current situation of treatment of the aquaculture tail water, the aquaculture tail water treatment method needs to be researched by utilizing an ecological mode or an ecological technical means, and the treated tail water can be recycled into an aquaculture pond.
Disclosure of Invention
The invention aims to provide a tail water treatment system based on an ecological purification pond, which aims to realize treatment and purification of tail water of an aquaculture pond by an ecological technical means and reuse of the tail water, improve the treatment efficiency of the tail water of the aquaculture pond and reduce environmental pollution.
In order to achieve the purpose, the invention adopts the technical scheme that: provided is a tail water treatment system based on an ecological purification tank, comprising:
the sedimentation tank is used for communicating a tail water discharge end of the aquaculture pond, aquatic animals, aquatic plants and aquatic microorganisms are arranged in the sedimentation tank, the aquatic animals are used for filtering and removing solid particles, the aquatic microorganisms are used for promoting the conversion and circulation of nutrient elements such as nitrogen and phosphorus, and the aquatic plants are used for slowing down the water flow speed and absorbing rich nutrient substances in the tail water;
the biochemical purification tank is internally and uniformly provided with a plurality of aeration assemblies, a porous filter material is added in the biochemical purification tank, cellulose agricultural byproducts are laid below the aeration assemblies, the porous filter material is used for constructing an aerobic biochemical reaction zone and removing pollutants such as ammonia nitrogen, nitrite and the like by using the nitrification of microorganisms, and the agricultural byproducts are used for constructing an anaerobic biochemical reaction zone and removing pollutants such as nitrate and the like by using the denitrification of microorganisms;
the multi-nutrition-level ecological purification pond is used for culturing various aquatic animals and plants, wherein the aquatic animals and plants comprise various plants such as submerged plants, emergent plants and floating plants, various microalgae and various nutrient elements such as nitrogen and phosphorus, and also comprise herbivorous fishes and filter-feeding shells and are used for ingesting plants and filter-feeding microalgae, so that the nutrient elements in the water body are further removed, and the discharged culture tail water is comprehensively treated and purified in an ecological mode;
the first filtering dam is arranged between the sedimentation tank and the biochemical purification tank and used for filtering tail water discharged by the sedimentation tank and conveying the tail water to the biochemical purification tank;
the second filtering dam is arranged between the biochemical purifying tank and the multi-nutrition-level ecological purifying tank and is used for filtering tail water discharged by the biochemical purifying tank and conveying the tail water to the multi-nutrition-level ecological purifying tank;
the microorganism-plant-animal comprehensive purification wetland comprises a tail water purification substrate constructed by gravels, porcelain granules and silt with different particle sizes, wherein the substrate is used for planting herbaceous plants, culturing saprophagous clamworms and culturing multifunctional microorganisms, so that the conversion and utilization of nutrient elements in the culture tail water are promoted, and the standard discharge of the culture tail water is realized;
and one end of the water return channel is communicated with the water outlet end of the multi-nutrition-level ecological purification tank, and the other end of the water return channel is communicated with the aquaculture pond and used for conveying the treated clean water body into the aquaculture pond so as to realize the recycling of the treated tail water.
In a possible implementation mode, plants are planted on the upper portions of the first filtering dam and the second filtering dam, and pollutants in partial culture tail water are absorbed.
In a possible implementation mode, the aquaculture pond and the multi-nutrition-level ecological purification pond are communicated through a drainage pipeline, and tail water in the aquaculture pond can be conveyed to the multi-nutrition-level ecological purification pond through the drainage pipeline.
In a possible implementation manner, an ecological ditch and/or a pipeline are arranged between the aquaculture pond and the sedimentation tank, and tail water is conveyed into the sedimentation tank through the ecological ditch and/or the pipeline.
In one possible implementation, filter-feeding fishes are planted in the multi-nutrient ecological purification tank, submerged, emergent and floating-leaf aquatic plants are planted in the multi-nutrient ecological purification tank, and the area of the multi-nutrient ecological purification tank covered by the aquatic plants is more than 80%.
In a possible implementation mode, a plurality of waterwheels are arranged on the water surface of the multi-nutrition-level ecological purification tank, so that the internal circulation of the water in the tank is promoted, the growth of microalgae is promoted, and the purification efficiency is improved.
In a possible implementation mode, a water quality monitoring device is installed at the water outlet end of the multi-nutrition-level ecological purification tank and used for monitoring the water quality of the water body after treatment and purification.
In a possible implementation mode, the tail water discharge end of the aquaculture pond is communicated with a runway type tail water treatment system.
In a possible implementation mode, the tail water discharge end of the aquaculture pond is communicated with a three-stage filter pond tail water treatment system.
In a possible implementation mode, the three-stage filter tank tail water treatment system comprises an overflow system, an arc-shaped sieve, a gravel filter, a fine sand filter and a ceramsite filter which are sequentially arranged, the bottom of the gravel filter and the bottom of the fine sand filter are mutually communicated, the upper part of the fine sand filter and the upper part of the ceramsite filter are communicated, the bottom of the ceramsite filter is provided with an opening and used for discharging tail water, the arc-shaped sieve is arranged at the top of the gravel filter and used for filtering the tail water flowing into the gravel filter, and the overflow system is used for conveying the tail water from the culture pond to the inside of the gravel filter.
In a possible implementation manner, the opening of the ceramsite filter is communicated with the multi-nutrition-level ecological purification tank.
In one possible implementation mode, the tail water discharge end of the aquaculture pond is communicated with a fish-vegetable symbiotic artificial wetland system, and tail water discharged by the fish-vegetable symbiotic artificial wetland system can be conveyed to the aquaculture pond.
The tail water treatment system based on the ecological purification tank has the beneficial effects that: compared with the prior art, the tail water treatment system based on the ecological purification tank comprises a sedimentation tank, a biochemical purification tank, a multi-nutrition-level ecological purification tank, a first filtering dam, a second filtering dam and a water return ditch, wherein the sedimentation tank is used for communicating with a tail water discharge end of an aquaculture pond, aquatic animals, aquatic plants and aquatic microorganisms are arranged in the sedimentation tank, and the aquatic plants are used for slowing down the water flow rate and absorbing rich nutrient substances in the tail water; the bottom of the biochemical purification tank is covered with a plastic film, a plurality of aeration components are uniformly distributed in the biochemical purification tank, and a porous filter material is added in the biochemical purification tank; the multi-nutrition-level ecological purification tank is used for comprehensively treating and purifying the discharged culture tail water in an ecological mode; the first filtering dam is arranged between the sedimentation tank and the biochemical purification tank and is used for filtering tail water discharged from the sedimentation tank and conveying the tail water to the biochemical purification tank; the second filtering dam is arranged between the biochemical purifying tank and the multi-nutrition-level ecological purifying tank and is used for filtering tail water discharged by the biochemical purifying tank and conveying the tail water to the multi-nutrition-level ecological purifying tank; one end of the backwater channel is communicated with the water outlet end of the multi-nutrition-level ecological purification tank, and the other end of the backwater channel is communicated with the aquaculture pond for conveying tail water into the aquaculture pond, so that the tail water of the aquaculture pond is treated and purified by an ecological technical means and is recycled after treatment, the treatment efficiency of the treated tail water is improved, and the environmental pollution is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a tail water treatment system based on an ecological purification tank according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a tail water treatment system based on an ecological purification tank according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a three-stage filtration tank tail water treatment system of a tail water treatment system based on an ecological purification tank according to another embodiment of the present invention.
Description of reference numerals:
1. a sedimentation tank; 2. a biochemical purification tank; 3. a multi-nutrition-level ecological purification tank; 4. a first filter dam; 5. a second filtering dam; 6. a backwater ditch; 7. an ecological ditch; 8. a water quality monitoring device; 9. a tail water treatment system of the third-stage filter tank; 91. an overflow system; 92. a curved screen; 93. a stone breaking filter; 94. a fine sand filter; 95. a ceramsite filter; 10 pipelines; 11. a culture pond; 12. an external river channel.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Referring to fig. 1 to 3 together, a tail water treatment system based on an ecological purification tank according to the present invention will now be described. The tail water treatment system based on the ecological purification tank comprises a sedimentation tank 1, a biochemical purification tank 2, a multi-nutrition-level ecological purification tank 3, a first filtering dam 4, a second filtering dam 5 and a return water ditch 6, wherein the sedimentation tank 1 is used for being communicated with a tail water discharge end of an aquaculture pond 11, aquatic animals, aquatic plants and aquatic microorganisms are arranged in the sedimentation tank 1, and the aquatic plants are used for slowing down the water flow speed and absorbing rich nutrient substances in the tail water; the bottom of the biochemical purification tank 2 is covered with a plastic film, a plurality of aeration components are uniformly distributed in the biochemical purification tank, and a porous filter material is added in the biochemical purification tank; the multi-nutrition-level ecological purification tank 3 is used for comprehensively treating and purifying the discharged culture tail water in an ecological mode; the first filtering dam 4 is arranged between the sedimentation tank 1 and the biochemical purification tank 2 and is used for filtering tail water discharged from the sedimentation tank 1 and conveying the tail water to the biochemical purification tank 2; the second filtering dam 5 is arranged between the biochemical purifying tank 2 and the multi-nutrition-level ecological purifying tank 3 and is used for filtering tail water discharged by the biochemical purifying tank 2 and transmitting the tail water to the multi-nutrition-level ecological purifying tank 3; one end of the backwater channel 6 is communicated with the water outlet end of the multi-nutrition-level ecological purification tank 3, and the other end is communicated with the aquaculture pond 11, so that the treated clean water body is conveyed into the aquaculture pond 11, and the tail water is recycled after being treated.
The invention provides a tail water treatment system based on a multi-nutrition-level ecological purification tank, which belongs to a sewage treatment system related to seawater utilization, and compared with the prior art, a sedimentation tank 1 is used for communicating a tail water discharge end of an aquaculture pond 11, aquatic animals, aquatic plants and aquatic microorganisms are arranged in the sedimentation tank 1, and the aquatic plants are used for slowing down the water flow rate and absorbing rich nutrient substances in the tail water; the bottom of the biochemical purification tank 2 is covered with a plastic film, a plurality of aeration components are uniformly distributed in the biochemical purification tank, and porous filter materials are added in the biochemical purification tank; the multi-nutrition-level ecological purification tank 3 is used for treating and purifying the discharged culture tail water by an ecological technical means; the first filtering dam 4 is arranged between the sedimentation tank 1 and the biochemical purification tank 2 and is used for filtering tail water discharged from the sedimentation tank 1 and conveying the tail water to the biochemical purification tank 2; the second filtering dam 5 is arranged between the biochemical purifying tank 2 and the multi-nutrition-level ecological purifying tank 3 and is used for filtering tail water discharged by the biochemical purifying tank 2 and transmitting the tail water to the multi-nutrition-level ecological purifying tank 3; one end of the water return channel 6 is communicated with the water outlet end of the multi-nutrition-level ecological purification tank 3, and the other end is communicated with the aquaculture pond 11 and is used for conveying the treated clean water body into the aquaculture pond 11 so as to realize the recycling of the treated tail water, realize the treatment and purification of the tail water of the aquaculture pond 11 by an ecological technical means, improve the treatment efficiency of the treated aquaculture tail water and reduce the environmental pollution.
The plastic film can be replaced by geotextile, pe film and the like. The porous filter material can be replaced by a brush which is a carrier capable of providing attachment for microorganisms. When a porous filter material is added to a filtration system, it is the most effective way to rapidly increase the number of microorganisms. The bottom of the biochemical purifying tank 2 can be not covered with a plastic film.
The aquatic animals in the sedimentation tank 1 are filter-feeding shellfish which comprise benthic shellfish and suspension cage cultured shellfish and are used for filtering and removing suspended solid particles and sediments in the water body, avoiding sedimentation in the sedimentation tank and realizing self-purification of the sedimentation tank.
Agricultural byproducts which take cellulose as a main component are paved at the bottom of the first filtering dam 4 to form a local anaerobic space, provide a carbon source for microorganisms and promote the denitrification of the microorganisms. Saline-alkali tolerant herbaceous plants are planted on the upper layers of the first filtering dam 4 and the second filtering dam 5 to form a physical filtering-microbial purifying-plant purifying comprehensive filtering belt.
The multi-nutrition-level ecological purification tank 3 is provided with a zigzag water channel formed by partition plates, and the artificial wetland is formed by planting aquatic plants along the water channel, so that the cultivation tail water is fully treated by the wetland, and the purification efficiency of the wetland is improved.
The upper part of the biochemical purification tank 2 is covered with a sunshade net to reduce the illumination intensity and promote the growth of microorganisms; paving cellulose agricultural byproducts at the bottom, fixing the agricultural byproducts by using a netting to form a bottom anaerobic zone, adding a porous filter material at the upper part of the anaerobic zone, and inflating to form an oxygen-enriched zone to construct the aerobic nitrification-anaerobic denitrification synchronous denitrification aeration filter.
An ecological floating bed is constructed on the water surface of the biochemical purification tank 2, the coverage rate is 100 percent, an underwater dark environment is formed, and the growth of microorganisms is promoted; paving cellulose agricultural byproducts at the bottom, fixing the cellulose agricultural byproducts by using a netting to form a bottom anaerobic area, adding a porous filter material at the upper part of the bottom anaerobic area, and inflating the porous filter material to form an oxygen-enriched area, thereby constructing an aerobic nitrification-anaerobic denitrification-autotrophic synchronous nitrogen and phosphorus removal ecological pool.
The bottom of the backwater ditch 6 is seeded with filter feeding shellfish and saprophagous clamworm, an ecological purification floating bed is constructed on the water surface, the shellfish filters and feeds solid waste, the clamworm is utilized to promote the disturbance of the ditch bottom, promote the exchange of dissolved oxygen and nutrient substances, and the ecological floating bed absorbs the soluble nitrogen-phosphorus nutrient salt to comprehensively treat the culture tail water.
The multi-nutrition-level ecological purification tank 3 treats and purifies the culture tail water through an ecological technical means, so that the pollution to the environment can be reduced, the use of chemical agents is reduced, the quality of the treated tail water can meet the design requirement, and the technical effect of recycling the culture pond 11 is achieved. Through ecological technology means purification treatment tail water, can not produce the pollution to the environment, the area of the ecological purification tank 3 of many nutrition levels is great, can satisfy normal use, or one or more breed pond 11 uses, realizes breeding the cyclic utilization of tail water, forms the system of cyclic treatment tail water, can also guarantee tail water treatment quality and effect simultaneously. The drainage end of the multi-nutrition ecological purification tank 3 is communicated with an external river channel 12, and water can be drained into the external river channel 12.
Specifically, by using the multi-nutrition-level ecological purification tank 3 system, the area of the system accounts for 3-5% of the total area of the culture site.
In order to treat the aquaculture tail water directly through the multi-nutrient ecological purification tank 3, in some embodiments, referring to fig. 1 to 3, a drainage pipeline (not shown in the drawings) is connected between the aquaculture pond 11 and the multi-nutrient ecological purification tank 3, and the tail water in the aquaculture pond 11 can be transported to the multi-nutrient ecological purification tank 3 through the drainage pipeline.
In some embodiments, referring to fig. 1 to 3, an ecological ditch 7 and/or a pipeline 10 are provided between the cultivation pond 11 and the sedimentation tank 1, and tail water is delivered into the sedimentation tank 1 through the ecological ditch 7 and/or the pipeline 10.
In some embodiments, referring to fig. 1-3, the multi-nutrient ecological purification tank 3 is populated with filter-feeding fish and planted with submerged, emergent and floating aquatic plants, wherein the aquatic plants cover more than 80% of the area of the multi-nutrient ecological purification tank 3. The submerged aquatic plant can be herba Swertiae Dilutae, waterweed, Goldfish algae, Foliumet Sedum, herba Eupatorii, etc.; the emergent aquatic plant can be rhizoma Nelumbinis, rhizoma Typhae, herba Oenanthes Javanicae, canna indica, etc.; the aquatic plant can be swamp cabbage, Eichhornia crassipes, flos Nymphaeae, rhizoma Acori Calami, etc.
In some embodiments, referring to fig. 1 to fig. 3, a water quality monitoring device 8 is installed at the water outlet end of the multi-nutrient ecological purification tank 3 for monitoring the water quality of the treated and purified water. The treatment and purification quality of the tail water can be mastered in real time, and when the treatment quality requirement is not met, the treated water can be stopped from being conveyed into the aquaculture pond 11; when the requirement of treatment quality is met, the treated water can be continuously conveyed into the aquaculture pond 11, and the reuse of tail water is realized.
Specifically, the adopted water quality monitoring device 8 can select equipment in the prior art and can monitor water quality information in real time.
In some embodiments, referring to fig. 1-3, the tail water discharge end of the aquaculture pond 11 is connected to a raceway-type tail water treatment system. The runway type tail water treatment system can be mutually and alternately used and simultaneously used with the multi-nutrition-level ecological purification tank 3, and the runway type tail water treatment system can be combined to form a system capable of treating the culture tail water in various modes.
In some embodiments, referring to fig. 1-3, the tail water discharge end of the aquaculture pond 11 is connected to a three-stage filtration pond tail water treatment system 9. The three-stage filter tank tail water treatment system 9 can be used alternately and simultaneously with the multi-nutrition-level ecological purification tank 3, and can be combined to form a system for treating the culture tail water in various modes.
In some embodiments, referring to fig. 1 to 3, the three-stage filtering pond tail water treatment system 9 includes an overflow system 91, a curved sieve 92, a gravel filter 93, a fine sand filter 94 and a ceramsite filter 95, which are sequentially arranged, wherein the bottom of the gravel filter 93 is communicated with the bottom of the fine sand filter 94, the upper part of the fine sand filter 94 is communicated with the upper part of the ceramsite filter 95, the bottom of the ceramsite filter 95 is provided with an opening for discharging tail water, the curved sieve 92 is arranged at the top of the gravel filter 93 for filtering tail water flowing into the gravel filter 93, and the overflow system 91 is used for conveying the tail water from the culture pond 11 into the gravel filter 93. The overflow system 91 is an overflow pipe.
In some embodiments, referring to fig. 1 to 3, the opening of the ceramsite filter 95 is connected to the multi-nutrient ecological purification pool 3. The tail water output from the ceramsite filter 95 can flow to the multi-nutrition-level ecological purification tank 3, and flows into the culture pond 11 after being purified again by the multi-nutrition-level ecological purification tank 3.
In some embodiments, referring to fig. 1 to 3, the tail water discharge end of the aquaculture pond 11 is communicated with a fish-vegetable symbiotic artificial wetland system, and tail water discharged by the fish-vegetable symbiotic artificial wetland system can be conveyed to the aquaculture pond 11. The fish-vegetable symbiotic artificial wetland system adopts a system in the prior art, and is not described again. The fish-vegetable symbiotic artificial wetland system can be mutually and alternately used and simultaneously used with the multi-nutrition-level ecological purification tank 3 to form a system capable of treating the culture tail water in various modes in a combined manner.
In some embodiments, referring to fig. 1 to 2, a water pump for pumping tail water is installed in the ecological canal 7 and/or the water return canal 6, and the water pump can be used for delivering water into the multi-nutrition-level ecological purification tank 3 or the aquaculture pond 11, so as to avoid the problem of poor tail water flow caused by a height difference.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Tail water treatment system based on ecological purification pond, its characterized in that includes:
the sedimentation tank is used for communicating with a tail water discharge end of the aquaculture pond, aquatic animals, aquatic plants and aquatic microorganisms are arranged in the sedimentation tank, and the aquatic plants are used for slowing down the water flow rate and absorbing rich nutrient substances in the tail water;
the bottom of the biochemical purification tank is covered with a plastic film, a plurality of aeration assemblies are uniformly distributed in the biochemical purification tank, and porous filter materials are added in the biochemical purification tank;
the multi-nutrition-level ecological purification tank is used for comprehensively treating and purifying the discharged culture tail water in an ecological mode;
the first filtering dam is arranged between the sedimentation tank and the biochemical purification tank and is used for filtering tail water discharged from the sedimentation tank and conveying the tail water to the biochemical purification tank;
the second filtering dam is arranged between the biochemical purifying tank and the multi-nutrition-level ecological purifying tank and is used for filtering tail water discharged by the biochemical purifying tank and conveying the tail water to the multi-nutrition-level ecological purifying tank;
the microorganism-plant-animal comprehensive purification wetland is used for promoting the conversion and utilization of nutrient elements in the culture tail water;
and one end of the water return channel is communicated with the water outlet end of the multi-nutrition-level ecological purification tank, and the other end of the water return channel is communicated with the aquaculture pond and used for conveying the treated clean water body into the aquaculture pond so as to realize the recycling of the treated tail water.
2. The ecological purification pond-based tail water treatment system as claimed in claim 1, wherein a drain pipe is communicated between the aquaculture pond and the multi-nutrient ecological purification pond, and tail water in the aquaculture pond can be delivered to the multi-nutrient ecological purification pond through the drain pipe.
3. The ecological purification pond-based tail water treatment system as claimed in claim 1, wherein an ecological ditch and/or a pipeline are arranged between the aquaculture pond and the sedimentation pond, and tail water is conveyed into the sedimentation pond through the ecological ditch and/or the pipeline.
4. The ecological purification pond-based tail water treatment system of claim 1, wherein the multi-nutrient ecological purification pond is populated with filter-feeding fish and seeded with submerged, emergent and floating aquatic plants, wherein the aquatic plants cover more than 80% of the area of the multi-nutrient ecological purification pond.
5. The tail water treatment system based on the ecological purification tank as claimed in claim 1, wherein a water quality monitoring device is installed at the water outlet end of the multi-nutrient ecological purification tank and is used for monitoring the water quality of the water body after being treated and purified.
6. The ecological purification pond-based tail water treatment system as claimed in claim 1, wherein the tail water discharge end of the aquaculture pond is communicated with a runway-type tail water treatment system.
7. The ecological purification pond-based tail water treatment system as claimed in claim 1, wherein the tail water discharge end of the aquaculture pond is communicated with a three-stage filter pond tail water treatment system.
8. The ecological purification tank-based tail water treatment system of claim 7, wherein the three-stage filtration tank tail water treatment system comprises an overflow system, a curved screen, a gravel filter, a fine sand filter and a ceramsite filter which are arranged in sequence, wherein the bottom of the gravel filter and the bottom of the fine sand filter are communicated with each other, the upper part of the fine sand filter and the upper part of the ceramsite filter are communicated, the bottom of the ceramsite filter is provided with an opening and used for discharging tail water, the curved screen is arranged at the top of the gravel filter and used for filtering the tail water flowing into the gravel filter, and the overflow system is used for conveying the tail water from an aquaculture pond into the gravel filter.
9. The ecological purification tank-based tail water treatment system as claimed in claim 8, wherein the ceramsite filter has an opening communicated with the multi-nutrient ecological purification tank.
10. The tail water treatment system based on the ecological purification tank as claimed in claim 1, wherein a fish and vegetable symbiotic artificial wetland system is communicated with the tail water discharge end of the culture pond, and tail water discharged by the fish and vegetable symbiotic artificial wetland system can be conveyed to the culture pond.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117185590A (en) * | 2023-11-06 | 2023-12-08 | 广东绿日环境科技有限公司 | Ecological treatment device and method for cultivation tail water |
| CN117882673A (en) * | 2024-03-15 | 2024-04-16 | 江苏龙腾工程设计股份有限公司 | Ecological farming systems of three-dimensional combination of wisdom photovoltaic fishery |
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| CN117882673A (en) * | 2024-03-15 | 2024-04-16 | 江苏龙腾工程设计股份有限公司 | Ecological farming systems of three-dimensional combination of wisdom photovoltaic fishery |
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