CN115191395B - Freshwater pond circulating water culture device and system - Google Patents
Freshwater pond circulating water culture device and system Download PDFInfo
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- CN115191395B CN115191395B CN202210010517.3A CN202210010517A CN115191395B CN 115191395 B CN115191395 B CN 115191395B CN 202210010517 A CN202210010517 A CN 202210010517A CN 115191395 B CN115191395 B CN 115191395B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/045—Filters for aquaria
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- 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
Abstract
The invention provides a freshwater pond circulating water culture device and a freshwater pond circulating water culture system, which comprise 16 container culture areas, wherein the container culture areas are arranged in two rows, the container culture areas are isolated from the purifying areas by dam bodies, and the tops of the container culture areas are provided with working bridges convenient to manage; the invention can effectively and rapidly collect the sewage and the solid waste in the culture area, and carry out solid-liquid separation, and the culture sewage enters the culture area again after being purified, thus realizing zero-emission and circulating culture. The rural small-area pond is transformed according to the method provided by the system, so that the pond culture yield can be improved, the culture benefit is increased, the labor cost is reduced, tail water is not discharged, and the aims of developing rural aquaculture industry, improving quality and improving efficiency and ecologically culturing are truly achieved.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a circulating water aquaculture device and system for a freshwater pond.
Background
Freshwater aquaculture mainly utilizes water areas such as ponds, reservoirs, lakes and the like to carry out the feeding, breeding and the like of aquatic animals such as fishes, shrimps and the like, wherein the pond aquaculture is the most dominant freshwater aquaculture mode. Along with the development of aquaculture technology, the technology of factory culture by using engineering facilities is also developed to a certain extent, and in the aspect of modern freshwater culture, the technology of modern machinery, water treatment technology and the like is utilized, so that freshwater culture equipment with high density and small water body is developed continuously and perfectly;
however, with the promulgation and implementation of the beach planning in various water areas, the aquaculture space is greatly compressed, and the tail water emission standard of the aquaculture in various places is discharged, so that the tail water emission and the value-added efficiency-improving pressure of the aquaculture in the pond are increasingly high, and the industrial aquaculture cannot be well popularized due to high construction and operation cost, overlarge fund investment, long income time and other reasons.
Disclosure of Invention
In order to solve the technical problems, the invention provides a circulating water aquaculture device and a circulating water aquaculture system for a freshwater pond, which are used for solving the problems described in the background art.
The invention discloses a circulating water aquaculture device and a circulating water aquaculture system for a freshwater pond, which are achieved by the following specific technical means: the method comprises a cultivation area and a purification area, wherein a quarter area enclosed by the inside of a pond with the area of 4 mu is the cultivation area, and the remaining three quarters of the space in the pond is the purification area;
the freshwater pond circulating water culture device system further comprises container tanks, wherein the container tanks are placed in a culture area in the pond, the container tanks are arranged in 16 rows, a dam body is arranged at the joint of the container tanks and the purification area for blocking, and a working bridge convenient to manage is assembled at the top of the container tanks.
The dam body below the container tank is connected with the sedimentation tank, and a sewage suction pump is arranged at the outer side of each two container tanks;
as a further aspect of the invention: the pond purifying area is internally provided with a pond purifying device comprising: sedimentation tank, oxidation tank, ecological purification tank, filtering dam and undercurrent wetland dam;
the dam body is installed the solid-liquid separation ware towards the one side upper position of sedimentation tank, the solid-liquid separation ware includes: the sewage treatment device comprises a tank body, a sewage pipe, a sewage discharge pipe and a filter screen;
the sewage pipe is connected with the water outlet end of the sewage suction pump, the sewage pipe penetrates through the groove body, the sewage pipe penetrates through the side wall of the groove body, and the filter screen is embedded into one side wall of the groove body, which faces the sedimentation tank.
As a further aspect of the invention: the included angle between the groove body and the ground is 1-2 degrees.
As a further aspect of the invention: the side of the filtering dam facing the sedimentation tank is higher than the side of the filtering dam facing the oxidation tank, an opening is formed in the bottom of the side wall of the filtering dam facing the oxidation tank, hole bricks are built in the opening, and one or more of bagged ceramic particles and gravels are filled in the filtering dam for filtering;
the sedimentation tank is filled with water from the upper right side, and the tail water flows into the oxidation tank from the side wall with the opening after the gravel filtration.
As a further aspect of the invention: an oxidation pond is built on the left side of the filtering dam, and two waterwheel type oxygen-increasing machines are assembled in the center of the inside of the oxidation pond;
as a further aspect of the invention: the subsurface flow wetland dam separates the oxidation pond from the ecological purification pond, is of a groove structure and comprises a baffle plate, wherein the baffle plate is positioned at the middle position inside the subsurface flow wetland dam, and the height of the baffle plate is lower than the heights of the two side walls of the subsurface flow wetland dam;
gravel is filled on one side of the baffle towards the oxidation pond, and biological filter materials are filled on the other side of the baffle;
a water inlet is formed in the bottom of one side of the subsurface flow wetland dam facing the oxidation pond, and the height of the biological filter material is lower than that of the gravel;
and aquatic weed planting areas are arranged above the gravels and the biological filter materials.
As a further aspect of the invention: an ecological purification pond floating bed is arranged in the ecological purification pond, and one or more of water spinach, water hyacinth, calamus and cress are planted on the ecological purification pond floating bed.
As a further aspect of the invention: the container tank is 20cm lower than the sedimentation tank, the oxidation tank, the ecological purification tank, the filtering dam and the undercurrent wetland dam;
the pond internally mounted has the inlet tube, the one end intercommunication that the inlet tube runs through the pond has the tee bend valve, and the one end and the container of tee bend valve are linked together, and the other end is linked together with ecological purification pond.
As a further aspect of the invention: the solid-liquid separator is used for separating solids in tail water, the solids are used for germplasm vegetables and the like, liquid is firstly precipitated in a precipitation tank (a row-mounted hairbrush is arranged in the precipitation tank, the arrangement distance of the hairbrush is 30 cm), water quality is filtered and treated by an overflow submerged dam, then oxidation treatment is carried out in an oxidation tank, aerobic substances after separation and purification are put into the oxidation tank, the water after the aerobic treatment enters an ecological purification tank through a specially designed submerged wetland dam, and the ecological purification tank floating bed is arranged into a zigzag structure, so that the water flow purification distance is prolonged, and meanwhile, part of filter feeding fishes are bred in the water. And finally, the tail water of the container tank can completely meet the purpose of circulating water cultivation after the whole set of purification treatment, and only part of new water needs to be filled in the cultivation process to supplement the evaporation capacity of the system.
The beneficial effects are that:
1. the invention can effectively and rapidly collect the sewage in the culture area, automatically perform solid-liquid separation, re-enter the culture area after the purification of the culture sewage, truly realize zero emission, have no tail water discharged, are easy to popularize, are suitable for small-area pond reconstruction, do not need large extra water sources, have controllable culture water circulation, have low equipment construction cost and less facility management personnel with quick return on investment, and reduce labor force.
2. The invention has the advantages that the culture tank is placed in the pond, the culture water circulation of the container tank is controllable, the equipment construction cost is low, the return on investment is fast, the container tank can be used for culturing fishes at high density for 2-3 years, the sewage suction pump can automatically suck out the sludge from the container tank, the water level of the container tank is kept stable, the water level of the container tank is lower than that of the purifying area, the water body can be purified conveniently to flow back, a large amount of electricity charge is saved, the problem of overhigh water temperature of the open-air culture tank in high-temperature weather is avoided, and the safety of the cultured fishes is ensured.
3. The invention has high cultivation yield, the comprehensive yield of the system can be 4000 kg/mu, the comprehensive yield is far higher than the traditional pond cultivation yield (generally 1500-2000 kg/mu), the ecological purification tank can be used for cultivating part of filter-feeding fishes, floating beds and undercurrent wetlands can be used for planting vegetables and the like, and the utilization value of the whole system can be improved.
4. According to the invention, through the independently developed solid-liquid separator, the solid matters in the tail water can be automatically settled without using electric power, the solid matters can be collected for secondary use, and the maintenance of the solid-liquid separator can be completed by regularly flushing the screen, so that the device is convenient to use.
5. According to the invention, through the design of the filtering dam, the flow of sewage is realized by utilizing the high level difference of water, and the filtering is carried out through gravel, ceramic particles and the like, so that the solid matters in the water are intercepted, and the sewage is efficiently purified.
6. According to the invention, through the design of the oxidation pond, the oxygen-consuming microorganisms and organic matters in the culture tail water are utilized as nutrient sources for metabolism, and a series of biochemical reactions are carried out to achieve harmless treatment, so that the tail water can be returned to the natural environment for further utilization.
7. The invention filters tail water through the independently designed undercurrent wetland dam, processes TN and TP in the water body, filters the undercurrent wetland dam through gravel and biological filter materials, purifies water quality through aquatic weeds, decomposes harmful nitrate, kills bacteria, reduces the content of microorganisms in water, and treats total nitrogen, total phosphorus and COD in the aquaculture water body Mn The clearance rate of the catalyst reaches 35%, 33.63% and 45% respectively.
8. According to the invention, through the design of the ecological purification tank, plants with economic value are planted by adopting the ecological purification tank floating bed, so that additional value is generated, water quality is further purified, and meanwhile, filter feeding fishes are put into the ecological purification tank, so that the overall value of the system is further improved, and the effects of high yield and high quality are achieved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
FIG. 2 is a schematic diagram of the structure of the subsurface flow wetland dam according to the present invention.
FIG. 3 is a schematic diagram of a solid-liquid separator according to the present invention.
FIG. 4 is a schematic diagram of a use flow of the present invention.
FIG. 5 is a schematic view of the structure of the container of the present invention.
In fig. 1 to 5, the correspondence between the component names and the reference numerals is:
pond 1, water inlet pipe 101, container tank 2, dam 201, tank 2011, sewage pipe 2012, sewage pipe 2013, filter screen 2014, working bridge 202, sewage pump 203, sedimentation tank 3, oxidation tank 4, ecological purifying tank 5, filtering dam 6, undercurrent wetland dam 7, and baffle 701.
Detailed Description
As shown in fig. 1 to 5:
example 1:
a freshwater pond circulating water culture device comprises a pond 1, wherein the area of the pond 1 is standard 4 mu, a quarter of space defined by a surrounding dam at the upper right corner inside the pond 1 is a culture area, the remaining three quarters of space inside the pond 1 is a purification area, and 50kg of fish are produced in each ton of aquatic products in the culture area;
the freshwater pond circulating water culture device also comprises container tanks 2, wherein the container tanks 2 are placed in a culture area in the pond 1, the total number of the container tanks 2 is 16, the container tanks are arranged in two rows, a dam 201 is arranged at the joint of the container tanks 2 and the purification area for blocking, a working bridge 202 convenient to manage is arranged at the top of the container tanks 2, hollow table boards are arranged around the top of the container tanks, and the volume of the container tanks is 2X2X6m;
the pond 1 can be transformed by a small-area pond, does not need a large additional water source, can be solved by well drilling, has controllable cultivation water circulation, low equipment construction cost and quick return on investment, and can return for 2-3 years;
the container tank 2 is a fish culture facility, independent management is realized through 16 independent container tanks 2, the container tank 2 has small volume, high-density culture is realized, disease spreading is effectively prevented, and meanwhile, facility management staff are few, so that labor force is reduced;
each container groove is filled with water 20m3, 16 container grooves of one culture unit are used for producing 1 ton of fish per groove, and the yield of one culture unit is: 16×1 ton=16 ton fish. The total yield value of the unit is 38.4 ten thousand yuan (24 yuan/kg), the cost of the feed for the fries is removed (the market specification is 2 jin/tail, about 1 ten thousand fries are needed, the feed cost is 1 ten thousand yuan based on 1 yuan/tail, the feed coefficient is 2, 32 tons of feed is fed, the feed cost is 4200 yuan/ton, 13.5 ten thousand yuan is fed, the two total costs are 14.5 ten thousand yuan, the other costs (7 ten thousand yuan are calculated by electricity fee, labor and the like), and the net profit of a culture unit is 17 ten thousand yuan;
the container tank 2 can cultivate fishes at high density, and the sewage suction pump 203 can automatically suck out sludge from the container tank 2 and keep the water level of the container tank 2 stable;
example 2:
this embodiment differs from embodiment 1 in that: the purifying area of the pond 1 is internally provided with the components comprising: the device comprises a sedimentation tank 3, an oxidation tank 4, an ecological purification tank 5, a filtering dam 6 and a subsurface flow wetland dam 7;
the dam 201 below the container tanks 2 is connected with the sedimentation tank 3, and a sewage suction pump 203 is arranged at the outer side of each two container tanks 2;
a solid-liquid separator is installed at a position above one side of the dam 201 facing the sedimentation tank 3, and includes: a tank 2011, a sewage pipe 2012, a sewage pipe 2013 and a filter screen 2014;
the tank 2011 is fixed at a position above one side of the dam 201, the sewage pipe 2012 is communicated with the water outlet end of the sewage suction pump 203, the sewage pipe 2012 penetrates through the tank 2011, the sewage pipe 2013 penetrates through the side wall of the tank 2011, and the filter screen 2014 is embedded into one side wall of the tank 2011 facing the sedimentation tank 3;
blocking and limiting the container tank 2 through the dam 201, sucking the sewage of the container tank 2 through the sewage suction pump 203, enabling the sewage to enter the tank 2011 through the sewage pipe 2012, and enabling the filter screen 2014 to intercept solid impurities in the cultivation tail water to achieve a filtering effect as the water surface in the tank 2011 is continuously raised to be higher than the height of the filter screen 2014, and enabling the tail water flowing through the filter screen 2014 to enter the sedimentation tank 3 for standing sedimentation;
the solid substances in the tank 2011 can be discharged through a drain pipe 2013, and the solid waste can be recycled and used as fertilizer;
the included angle between the tank 2011 and the ground is 1-2 degrees, and the tank 2011 is obliquely arranged so as to facilitate the sewage discharge of the sewage discharge pipe 2013;
the side of the filtering dam 6 facing the sedimentation tank 3 is higher than the side of the filtering dam facing the oxidation tank 4, an opening is formed in the bottom of the side wall of the filtering dam 6 facing the oxidation tank 4, perforated bricks are built in the opening, and one or more of bagged ceramic grains and gravels are filled in the filtering dam 6 for filtering;
the sedimentation tank 6 is filled with water from the upper right side, and the tail water after gravel filtration flows into the oxidation tank 4 from the side wall with an opening;
the sewage in the sedimentation tank 3 continuously permeates the filtering dam 6, and solid matters in the tail water are further intercepted by utilizing a porous structure of ceramic particles and gravels;
an oxidation pond 4 is built on the left side of the filtering dam 6, and two water-wheel type oxygen-increasing machines are assembled at the inner center of the oxidation pond 4;
the tail water passing through the filtering dam 6 enters the oxidation pond 4, at the moment, oxygen in the oxidation pond 4 is increased through the aerator, oxygen-consuming microorganisms and organic matters in the culture tail water are used as nutrient sources for metabolism, and a series of biochemical reactions are carried out to achieve harmless treatment, so that the tail water can return to the natural environment for further use;
the undercurrent wetland dam 7 is installed on the other side of the filtering dam 6, and the undercurrent wetland dam 7 is communicated with the oxidation pond 4, and the undercurrent wetland dam 7 comprises: a baffle 701, wherein one side of the baffle 701 facing the oxidation basin 4 is filled with gravel, and the other side of the baffle 701 is filled with biological filter material;
the water grass planting areas are respectively divided above the gravel and the biological filter material;
tail water subjected to harmless treatment in the oxidation pond 4 flows into the undercurrent wetland dam 7 from a communication port between the bottom of the oxidation pond 4 and the undercurrent wetland dam 7, water quality is purified by using aquatic weeds, nitrate harmful to fish is decomposed, bacteria are killed, the content of microorganisms in the water is reduced, and pollution of the tail water is reduced;
wherein, the liquid crystal display device comprises a liquid crystal display device,the undercurrent wetland dam 7 is used for treating total nitrogen, total phosphorus and COD of the culture water body Mn The clearance rate of (a) reaches 35%, 33.63% and 45% respectively;
an ecological purifying pond floating bed is arranged in the ecological purifying pond 5, and the ecological purifying pond floating bed is planted with water spinach, water hyacinth, calamus and cress;
generating additional value by planting plants with economic value, and further purifying water quality;
wherein, the filter feeding fishes can be cultivated in the ecological purifying tank 5 to improve the overall value of the system;
the container tank 2 is lower than the sedimentation tank 3, the oxidation tank 4, the ecological purification tank 5, the filtering dam 6 and the undercurrent wetland dam 720 cm;
a water inlet pipe 101 is arranged in the pond 1, one end of the water inlet pipe 101 penetrating through the pond 1 is communicated with a three-way valve, one end of the three-way valve is communicated with the container tank 2, and the other end of the three-way valve is communicated with the ecological purifying pond 5;
the purified water directly flows back to the container tank 2 through the high level difference to form a finished water treatment cycle, so that zero emission is truly realized, no external equipment input is needed, and only part of new water is needed to be filled in the use to supplement the evaporation capacity of the system, so that the use cost is further reduced, the water treatment device is suitable for large-scale popularization, and the effects of high yield, high quality and zero emission are achieved.
Example 3:
the technology comprises the steps of separating solids in tail water by using a solid-liquid separator, enabling solids to be used for germplasm vegetables and the like, enabling liquid to be precipitated by a precipitation tank (a row-mounted hairbrush is arranged in the precipitation tank, the arrangement distance of the hairbrush is 30 cm), carrying out oxidation treatment by an oxidation tank after water quality is filtered by an overflow submerged dam, putting separated and purified aerobic matters into the oxidation tank, enabling water after the aerobic treatment to enter an ecological purification tank by a specially designed submerged wetland dam, enabling a floating bed of the ecological purification tank to be in a zigzag structure, enabling the water flow purification distance to be prolonged, and meanwhile, breeding part of filter feeding fishes in water. And finally, the tail water of the container tank can completely meet the purpose of circulating water cultivation after the whole set of purification treatment, and only part of new water needs to be filled in the cultivation process to supplement the evaporation capacity of the system.
Claims (2)
1. A freshwater pond circulating water culture device comprises a pond (1), wherein the area of the pond (1) is standard 4 mu, a quarter space formed by surrounding dams at the right upper corner inside the pond (1) is a culture area, and the remaining three-fourths space inside the pond (1) is a purification area;
the method is characterized in that: the freshwater pond circulating water culture device further comprises container tanks (2), wherein the container tanks (2) are placed in a culture area in the pond (1), 16 container tanks (2) are arranged in two rows, a dam body (201) is arranged at the joint of the container tanks (2) and the purification area for blocking, and a working bridge (202) convenient to manage is arranged at the top of the container tanks (2);
the pond (1) is internally provided with: a sedimentation tank (3), an oxidation tank (4), an ecological purification tank (5), a filtering dam (6) and a subsurface flow wetland dam (7);
the dam body (201) below the container tanks (2) is connected with the sedimentation tank (3), and a sewage suction pump (203) is arranged at the outer side of each two container tanks (2);
a solid-liquid separator is installed at a position above one side of the dam body (201) facing the sedimentation tank (3), and the solid-liquid separator comprises: a tank body (2011), a sewage pipe (2012), a sewage pipe (2013) and a filter screen (2014);
the sewage pipe (2012) is communicated with the water outlet end of the sewage suction pump (203), the sewage pipe (2012) penetrates through the groove body (2011), the sewage pipe (2013) penetrates through the side wall of the groove body (2011), and the filter screen (2014) is embedded into one side wall, facing the sedimentation tank (3), of the groove body (2011);
the sedimentation tank (3) is internally provided with a row-mounted hairbrush, and the arrangement distance of the row-mounted hairbrush is 30cm;
the included angle between the groove body (2011) and the ground is 1-2 degrees;
the side, facing the sedimentation tank (3), of the filtering dam (6) is higher than the side, facing the oxidation tank (4), of the filtering dam (6), an opening is formed in the bottom of the side wall, facing the oxidation tank (4), of the filtering dam (6), hole bricks are built in the opening, and one or more of bagged ceramic grains and gravels are filled in the filtering dam (6) for filtering;
the sedimentation tank (3) is filled with water from the upper right side, and tail water after gravel filtration flows into the oxidation tank (4) from the side wall with an opening;
an oxidation pond (4) is built on the left side of the filtering dam (6), and two water wheel type oxygen-increasing machines are assembled at the inner center of the oxidation pond;
the subsurface flow wetland dam (7) separates the oxidation pond (4) from the ecological purification pond (5), the subsurface flow wetland dam (7) is communicated with the oxidation pond (4), and the subsurface flow wetland dam (7) comprises: a baffle plate (701), wherein one side of the baffle plate (701) facing the oxidation pond (4) is filled with gravel, and the other side of the baffle plate (701) is filled with biological filter material;
planting pasture and water above the gravel and the biological filter material;
an ecological purification pool floating bed is designed in the ecological purification pool (5), and one or more of water spinach, water hyacinth, calamus and cress are planted on the ecological purification pool floating bed;
the application method of the culture system of the freshwater pond circulating water culture device comprises the following steps:
s1: solid-liquid separation;
the tail water flows into a solid-liquid separator which does not need to use electric power, is subjected to automatic separation and sedimentation, and a filter screen (2014) is washed periodically, so that solid matters are used for planting vegetables;
s2: precipitating the liquid;
the liquid separated by the S1 enters a sedimentation tank (3) for sedimentation treatment;
s3: oxidizing;
the water after the S2 enters an oxidation pond (4) through a filtering dam (6) to oxidize the water;
s4: filtering;
filtering water after S3 through a subsurface flow wetland dam (7), and treating TN and TP in the water body;
s5: ecological purification;
the water after the S4 enters an ecological purifying pond (5), and an ecological purifying pond floating bed with a zigzag structure is arranged in the ecological purifying pond (5);
s6: biological purification;
putting filter-feeding fishes into the ecological purifying tank (5), filtering and feeding planktonic animals and plants, and further purifying water quality;
s7: circulating water cultivation;
the tail water of the final container tank (2) can completely meet the purpose of circulating water cultivation after the whole set of purification treatment, and only part of new water needs to be filled in the cultivation process to supplement the evaporation capacity of the system.
2. A freshwater pond circulating aquaculture apparatus according to claim 1, wherein: the container tank (2) is lower than the sedimentation tank (3), the oxidation tank (4), the ecological purification tank (5), the filtering dam (6) and the undercurrent wetland dam (7) by 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210010517.3A CN115191395B (en) | 2022-01-06 | 2022-01-06 | Freshwater pond circulating water culture device and system |
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| CN202210010517.3A CN115191395B (en) | 2022-01-06 | 2022-01-06 | Freshwater pond circulating water culture device and system |
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| CN115191395A CN115191395A (en) | 2022-10-18 |
| CN115191395B true CN115191395B (en) | 2023-09-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115925173A (en) * | 2022-12-20 | 2023-04-07 | 贵州省水产研究所 | Modular assembly type aquaculture tail water treatment system and method |
| CN117164167B (en) * | 2023-10-13 | 2024-03-29 | 江苏龙腾工程设计股份有限公司 | Fishery photovoltaic complementary ecological filtration dam system for aquaculture tail water |
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