CN115191395A - Freshwater pond recirculating aquaculture device and system - Google Patents
Freshwater pond recirculating aquaculture device and system Download PDFInfo
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- CN115191395A CN115191395A CN202210010517.3A CN202210010517A CN115191395A CN 115191395 A CN115191395 A CN 115191395A CN 202210010517 A CN202210010517 A CN 202210010517A CN 115191395 A CN115191395 A CN 115191395A
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- 238000009360 aquaculture Methods 0.000 title claims abstract description 36
- 244000144974 aquaculture Species 0.000 title claims abstract description 36
- 239000013505 freshwater Substances 0.000 title claims abstract description 26
- 230000003134 recirculating effect Effects 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000000746 purification Methods 0.000 claims abstract description 52
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 230000003647 oxidation Effects 0.000 claims description 42
- 238000007254 oxidation reaction Methods 0.000 claims description 42
- 238000001914 filtration Methods 0.000 claims description 33
- 238000004062 sedimentation Methods 0.000 claims description 29
- 241000251468 Actinopterygii Species 0.000 claims description 15
- 238000007667 floating Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 claims description 5
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- 239000002245 particle Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
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- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 244000205574 Acorus calamus Species 0.000 claims description 3
- 235000011996 Calamus deerratus Nutrition 0.000 claims description 3
- 240000003826 Eichhornia crassipes Species 0.000 claims description 3
- 240000008436 Ipomoea aquatica Species 0.000 claims description 3
- 244000211187 Lepidium sativum Species 0.000 claims description 3
- 235000007849 Lepidium sativum Nutrition 0.000 claims description 3
- 235000001601 Sabal palmetto Nutrition 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims 1
- 238000012258 culturing Methods 0.000 abstract description 2
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- 238000005516 engineering process Methods 0.000 description 6
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- 239000010802 sludge Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241001113556 Elodea Species 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000005276 aerator Methods 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
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Images
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
-
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Biodiversity & Conservation Biology (AREA)
- Animal Husbandry (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Botany (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Farming Of Fish And Shellfish (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a circulating water aquaculture device and a system for a freshwater pond, which comprises 16 container culture areas, wherein the container culture areas are arranged in two rows, the container culture areas are isolated from a purification area by a dam body, and the top of the container culture area is provided with a working bridge convenient to manage; the invention can effectively and quickly collect the sewage and solid waste in the culture area, and carry out solid-liquid separation, and the culture sewage enters the culture area again after being purified, thereby really realizing zero emission and circular culture. After the rural small-area pond is transformed according to the method provided by the system, 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 the rural aquaculture industry, improving the quality and efficiency and ecologically culturing are really 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 fresh water pond.
Background
Freshwater aquaculture mainly utilizes water areas such as ponds, reservoirs, lakes and the like to carry out the work of feeding, breeding and the like of aquatic animals such as fishes, shrimps and the like, wherein the pond aquaculture is the most important freshwater aquaculture mode. With the development of aquaculture technology, the technology of industrial 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 process and the like is used, so that freshwater culture equipment with high density and small water body is continuously developed and perfected;
however, with the promulgation and implementation of tidal flat planning of water areas in various regions, the aquaculture space is greatly compressed, and the tail water discharge and value-added efficiency improvement pressure of pond aquaculture is higher and higher due to the emergence of tail water discharge standards of aquaculture in various regions, so that industrial aquaculture cannot be well popularized due to high construction and operation cost, overlarge capital investment, long profit time and the like.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a recirculating aquaculture device and system for fresh water ponds, so as to solve the above problems described in the background art.
The invention relates to a circulating water aquaculture device and system for a fresh water pond, which has the purpose and effect achieved by the following specific technical means: the pond comprises a culture area and a purification area, wherein a quarter area enclosed by the interior of a pond with the area of 4 mu is the culture area, and the remaining three quarters of the space in the pond is the purification area;
fresh water pond recirculating water aquaculture device system still includes the collection dress groove, and the collection dress groove is placed in the breed area in the pond, and the collection dress groove totally 16 divides two rows of settings, and the collection dress groove has the dam body to block with the continuous department in purification area, and the top in collection dress groove is equipped with the working bridge of the management of being convenient for.
A dam body at the position below the collecting grooves is connected with the sedimentation tank, and the outer sides of every two collecting grooves are provided with sewage suction pumps;
as a further aspect of the invention: the pond purification area is provided with the pond purification area including: a sedimentation tank, an oxidation tank, an ecological purification tank, a filtering dam and a subsurface flow wetland dam;
solid-liquid separator is installed to one side top position of dam body towards the sedimentation tank, solid-liquid separator includes: a tank body, a sewage pipe, a blow-off pipe and a filter screen;
the sewage treatment device comprises a tank body, a sewage pipe, a sewage suction pump, a filter screen, a sewage pipe and a sewage pipe, wherein the tank body is fixed above one side of the dam body, the sewage pipe is communicated with the water outlet end of the sewage suction pump, the sewage pipe penetrates through the tank body, the sewage pipe penetrates through the side wall of the tank body, and the filter screen is embedded in one side wall of the tank body facing 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: one side of the filtering dam facing the sedimentation tank is higher than one side of the filtering dam facing the oxidation tank, the bottom of the side wall of the filtering dam facing the oxidation tank is provided with an opening, a hole brick is 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 tail water flows into the oxidation tank from the side wall with the opening after being filtered by gravel.
As a further aspect of the invention: an oxidation pond is built on the left side of the filtering dam, and two waterwheel type automatic aerators are assembled in the center of the interior 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-shaped structure and comprises a baffle, the baffle is positioned in the middle of the inside of the subsurface flow wetland dam, and the height of the baffle is lower than that of the two side walls of the subsurface flow wetland dam;
gravel is filled on one side of the baffle plate facing the oxidation pond, and biological filter materials are filled on the other side of the baffle plate;
the bottom of one side of the subsurface flow wetland dam facing the oxidation pond is provided with a water inlet, and the height of the biological filter material is lower than that of the gravel;
and aquatic plant growing 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 swamp cabbage, water hyacinth, calamus and cress are planted on the ecological purification pond floating bed.
As a further aspect of the invention: the container tanks are 20cm lower than the sedimentation tank, the oxidation tank, the ecological purification tank, the filtering dam and the subsurface flow wetland dam;
pond internally mounted has the inlet tube, the one end intercommunication that the inlet tube runs through the pond has the three-way valve, and the one end and the collection container of three-way valve communicate mutually, and the other end is linked together with ecological purification pond.
As a further aspect of the invention: solid-liquid separator is used for separating solid in tail water, the solid is used for germplasm vegetables and the like, liquid is firstly precipitated in a precipitation tank (the precipitation tank is internally provided with row-mounted brushes with the arrangement distance of 30 cm), water is filtered by an overflow subsurface flow dam and then is subjected to oxidation treatment in an oxidation tank, separated and purified aerobic matters are put into the oxidation tank, the water after the aerobic treatment enters an ecological purification tank through a specially designed subsurface flow wetland dam, a floating bed of the ecological purification tank is arranged into a zigzag structure, the water flow purification distance is prolonged, and meanwhile, part of filter-feeding fishes are raised in the water. Finally, the tail water of the collecting tank can completely meet the purpose of circulating water culture after being subjected to a whole set of purification treatment, and only part of fresh water needs to be added to supplement the evaporation capacity of the system in the culture process.
Has the advantages that:
1. the invention can effectively and quickly collect the sewage in the culture area, automatically carry out solid-liquid separation, and re-enter the culture area after purifying the culture sewage, thereby really realizing zero discharge, not discharging tail water, being easy to popularize, being suitable for the transformation of small-area ponds, needing no large additional water source, realizing controllable culture water circulation, low equipment construction cost, quick investment return, few facility managers and reducing labor force.
2. The culture tank is placed in the pond, the circulation of culture water in the container tank is controllable, the construction cost of equipment is low, the investment return is fast, the container tank can be reused in 2-3 years, the container tank can be used for culturing fishes at high density, the sludge can be automatically sucked out of the container tank by the sewage suction pump, the water level of the container tank is kept stable, the water level of the container tank is lower than that of a purification area, the backflow of a purified water body is facilitated, a large amount of electric charges are saved, the problem that the water temperature of an open culture tank is too high in high-temperature weather is avoided, and the safety of the cultured fishes is ensured.
3. The invention has high culture yield, the comprehensive yield of the system can be 4000 kg/mu, which is far beyond the traditional pond culture yield (generally 1500-2000 kg/mu), the ecological purification pond can breed part of filter-feeding fishes, and the floating bed and the subsurface flow wetland can be used for planting vegetables and the like, thereby improving the utilization value of the whole system.
4. According to the invention, through the independently developed solid-liquid separator, solid matters in the tail water can be automatically settled without using electric power, the solid matters can be collected for secondary utilization, the maintenance of the solid-liquid separator can be completed by regularly washing the screen, and the use is convenient.
5. According to the invention, through the design of the filtering dam, the flowing of sewage is realized by utilizing the height difference of water, and the filtering is carried out through gravels, ceramic particles and the like, so that the solid matters in the water are intercepted, and the high-efficiency purification is realized.
6. The invention utilizes oxygen-consuming microorganisms and organic matters in the culture tail water as nutrient sources for metabolism through the design of the oxidation pond, achieves harmless treatment through a series of biochemical reactions, and enables the tail water to return to the natural environment for further utilization.
7. The tail water is filtered by the subsurface flow wetland dam which is designed independently, TN and TP in the water body are treated, the subsurface flow wetland dam filters the biological filter material through gravels, the water quality is purified by waterweeds, harmful nitrate is decomposed, bacteria are killed, the content of microorganisms in the water is reduced, and the total nitrogen, total phosphorus and COD in the aquaculture water body are treated Mn The clearance rates of the compounds respectively reach 35 percent, 33.63 percent and 45 percent.
8. According to the invention, through the design of the ecological purification pond, plants with economic value are planted on the floating bed of the ecological purification pond, additional value is generated, water quality is further purified, and filter-feeding fishes are put into the ecological purification pond, 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 view of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the subsurface flow wetland dam of the invention.
FIG. 3 is a schematic view of a solid-liquid separator according to the present invention.
FIG. 4 is a schematic view of the process of the present invention.
FIG. 5 is a schematic view of the structure of the packaging trough of the present invention.
In fig. 1-5, the correspondence between the component names and the reference numbers is:
the ecological sewage treatment system comprises a pond 1, a water inlet pipe 101, a collecting tank 2, a dam body 201, a tank body 2011, a sewage pipe 2012, a sewage discharge pipe 2013, a filter screen 2014, a working bridge 202, a sewage suction pump 203, a sedimentation tank 3, an oxidation pond 4, an ecological purification pond 5, a filter dam 6, a subsurface flow wetland dam 7 and a baffle 701.
Detailed Description
As shown in figures 1 to 5:
example 1:
a fresh water pond circulating water aquaculture device comprises a pond 1, wherein the area of the pond 1 is 4 mu per standard, a quarter space surrounded by a surrounding dam at the upper right corner in the pond 1 is an aquaculture area, the remaining three quarters space in the pond 1 is a purification area, and 50kg of fish are produced in each ton of aquaculture area;
the circulating water aquaculture device for the freshwater pond also comprises collecting tanks 2, wherein the collecting tanks 2 are arranged in a aquaculture area in the pond 1, the number of the collecting tanks 2 is 16, the collecting tanks are arranged in two rows, dam bodies 201 are arranged at the connecting positions of the collecting tanks 2 and a purification area for blocking, working bridges 202 convenient to manage are assembled at the tops of the collecting tanks 2, hollow table boards are arranged on the peripheries of the collecting tanks 2, and the volume of each collecting tank is 2X2X6m;
the pond 1 can be formed by reforming a small-area pond, does not need a large additional water source, can solve the problem of insufficient water source by well digging, has controllable culture water circulation, low equipment construction cost and quick investment return, and can be restored in 2 to 3 years;
the container 2 is a fish culture facility, independent management is realized through 16 independent container 2, the container 2 has small volume, high-density culture is realized, disease spreading is effectively prevented, and meanwhile, facility management personnel are few, so that labor force is reduced;
every collection dress groove dress water 20m3, 16 collection dress grooves of a culture unit, then 1 ton fish is produced in every groove, culture unit output: 16 x 1 ton =16 ton fish. The unit total yield is 38.4 ten thousand yuan (24 yuan/kg), the cost of seedling feed is removed (the market specification is 2 jin/tail, about 1 thousand fries are needed, 1 yuan/tail is counted, the seed cost is 1 ten thousand yuan; the feed coefficient is 2, 32 tons of feed is counted, 4200 yuan/ton is counted, the feed cost is 13.5 ten thousand yuan, the two total costs are 14.5 ten thousand yuan), other costs (7 ten thousand yuan counted by electric charge, manpower and the like), and the net profit of one breeding unit is 17 ten thousand yuan;
the container 2 can culture fish at high density, the sludge suction pump 203 can automatically suck sludge out of the container 2 and keep the water level of the container 2 stable;
example 2:
the present example differs from example 1 in that: the pond 1 is provided with in the purification area and includes: 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 at the position below the collecting tanks 2 is connected with the sedimentation tank 3, and the outer sides of every two collecting tanks 2 are respectively provided with a sewage suction pump 203;
the dam 201 is installed with solid-liquid separator towards one side top position of sedimentation tank 3, and solid-liquid separator includes: a trough 2011, a sewage pipe 2012, a sewage discharge pipe 2013 and a filter screen 2014;
the trough 2011 is fixed 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 trough 2011, the sewage pipe 2013 penetrates through the side wall of the trough 2011, and the filter screen 2014 is embedded in one side wall of the trough 2011 facing the sedimentation tank 3;
the collection and filling tank 2 is stopped and limited through the dam body 201, the culture water in the collection and filling tank 2 enters the tank body 2011 through the sewage pipe 2012 after being sucked by the sewage suction pump 203, the filter screen 2014 intercepts solid impurities in the culture tail water along with the continuous rise of the water surface in the tank body 2011 to a height higher than that of the filter screen 2014, the filtering effect is achieved, and the tail water flowing through the filter screen 2014 enters the sedimentation tank 3 for standing and sedimentation;
solid matters in the groove 2011 can be discharged through the drain pipe 2013, and solid waste can be recycled and used as fertilizer;
the included angle between the groove 2011 and the ground is 1-2 degrees, and the groove 2011 is obliquely arranged to facilitate the sewage discharge of the sewage discharge pipe 2013;
one side of the filtering dam 6 facing the sedimentation tank 3 is higher than one side of the filtering dam 6 facing the oxidation tank 4, the bottom of the side wall of the filtering dam 6 facing the oxidation tank 4 is provided with an opening, perforated bricks are built in the opening, and one or more of bagged ceramic particles 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 tail water flows into the oxidation tank 4 from the side wall with an opening after being filtered by gravel;
sewage in the sedimentation tank 3 continuously permeates the filtering dam 6, and solid matters in 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 waterwheel type automatic aerators are assembled in the center of the oxidation pond 4;
the tail water passing through the filtering dam 6 enters the oxidation pond 4, oxygen in the oxidation pond 4 is increased through an oxygen increasing machine at the moment, oxygen consuming microorganisms and organic matters in the culture tail water are used as nutrient sources for metabolism, and the tail water can be returned to the natural environment for further utilization through a series of biochemical reactions to achieve harmless treatment;
the subsurface flow wetland dam 7 is arranged at the other side of the filtering dam 6, the subsurface flow wetland dam 7 is communicated with the oxidation pond 4, and the subsurface flow wetland dam 7 comprises: the side, facing the oxidation pond 4, of the baffle 701 is filled with gravels, and the other side of the baffle 701 is filled with biological filter materials;
aquatic weed planting areas are divided above the gravels and the biological filter materials;
tail water subjected to harmless treatment in the oxidation pond 4 flows into the subsurface flow wetland dam 7 from a communication port between the bottom of the oxidation pond 4 and the subsurface flow wetland dam 7, and is used for purifying water by using waterweeds, decomposing nitrate harmful to fish, killing bacteria, reducing the content of microorganisms in water and reducing the pollution of the tail water;
wherein, the subsurface flow wetland dam 7 is used for total nitrogen of the aquaculture waterTotal phosphorus and COD Mn The clearance rates of the compounds reach 35%, 33.63% and 45% respectively;
an ecological purification pond floating bed is arranged in the ecological purification pond 5, and swamp cabbage, water hyacinth, calamus and cress are planted on the ecological purification pond floating bed;
by planting plants with economic value, additional value is generated, and water quality is further purified;
wherein, the filter-feeding fishes can be cultivated in the ecological purifying pond 5 to improve the overall value of the system;
the assembly groove 2 is arranged lower than the sedimentation tank 3, the oxidation tank 4, the ecological purification tank 5, the filtering dam 6 and the subsurface flow wetland dam by 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 2, and the other end of the three-way valve is communicated with the ecological purification tank 5;
purified water directly flows back to the collecting tank 2 through high potential difference to form finished water treatment circulation, so that zero emission is really realized, external equipment is not needed to be input, only part of new water needs to be added to supplement the evaporation capacity of the system in use, the use cost is further reduced, the device is suitable for large-scale popularization, and the effects of high yield, high quality and zero emission are achieved.
Example 3:
in the embodiment, the technology comprises a technology for recycling culture tail water treatment, the technology comprises the steps of separating solid in the tail water by using a solid-liquid separator, using the solid for germplasm vegetables and the like, depositing liquid in a sedimentation tank (the sedimentation tank is internally provided with a row of brushes, the arrangement distance of the brushes is 30 cm), filtering the water by using an overflow subsurface flow dam, then carrying out oxidation treatment in an oxidation tank, adding separated and purified aerobic matters into the oxidation tank, feeding the water after the aerobic treatment into an ecological purification tank by using a specially designed subsurface flow wetland dam, setting a floating bed of the ecological purification tank into a zigzag structure, prolonging the water flow purification distance, and meanwhile stocking part of filter-feeding fishes in the water. Finally, the tail water of the collecting tank can completely meet the aim of circulating water culture after being subjected to a whole set of purification treatment, and only part of fresh water needs to be added in the culture process to supplement the evaporation capacity of the system.
Claims (9)
1. A fresh water pond circulating water aquaculture device comprises a pond (1), the area of the pond (1) is 4 mu per square, a quarter space surrounded by a surrounding dam at the upper right corner in the pond (1) is an aquaculture area, and the remaining three quarters space in the pond (1) is a purification area;
the method is characterized in that: fresh water pond recirculating water aquaculture device still includes collection dress groove (2), and collection dress groove (2) are placed in the breed area in pond (1), and collection dress groove (2) are 16 totally, divide two rows of settings, and collection dress groove (2) are provided with dam body (201) with the continuous department in purification area and block, and the top in collection dress groove (2) is equipped with work bridge (202) of the management of being convenient for.
2. The circulating water aquaculture device for fresh water ponds according to claim 1, wherein: the pond (1) is provided with in the purification area: a sedimentation tank (3), an oxidation tank (4), an ecological purification tank (5), a filtering dam (6) and an undercurrent wetland dam (7);
a dam body (201) is arranged below the collecting tanks (2) and connected with the sedimentation tank (3), and the outer sides of every two collecting tanks (2) are respectively provided with a sewage suction pump (203);
solid-liquid separator is installed to dam body (201) one side top position towards sedimentation tank (3), solid-liquid separator includes: a trough body (2011), a sewage pipe (2012), a sewage discharge pipe (2013) and a filter screen (2014);
the trough body (2011) is fixed above one side of the dam body (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 trough body (2011), the sewage discharge pipe (2013) penetrates through the side wall of the trough body (2011), and the filter screen (2014) is embedded in one side wall of the trough body (2011) facing the sedimentation tank (3);
the settling tank (3) is internally provided with row-mounted brushes, and the arrangement distance of the row-mounted brushes is 30cm.
3. The circulating water aquaculture device for fresh water ponds according to claim 2, wherein: the included angle between the groove body (2011) and the ground is 1-2 degrees.
4. The recirculating aquaculture device for the freshwater pond of claim 2, wherein: one side of the filtering dam (6) facing the sedimentation tank (3) is higher than one side of the filtering dam facing the oxidation tank (4), the bottom of the side wall of the filtering dam (6) facing the oxidation tank (4) is provided with an opening, a porous brick is built in the opening, and one or more bagged ceramic particles 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 tail water flows into the oxidation tank (4) from the side wall with the opening after being filtered by gravel.
5. The circulating water aquaculture device for fresh water ponds according to claim 2, wherein: an oxidation pond (4) is built on the left side of the filtering dam (6), and two waterwheel type oxygen increasing machines are assembled in the center of the interior of the oxidation pond.
6. The recirculating aquaculture device for the freshwater pond of claim 2, wherein: 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: the side, facing the oxidation pond (4), of the baffle (701) is filled with gravel, and the other side of the baffle (701) is filled with biological filter materials;
aquatic weeds are planted above the gravels and the biological filter materials.
7. The circulating water aquaculture device for fresh water ponds according to claim 2, wherein: an ecological purification pond floating bed is designed in the ecological purification pond (5), and one or more of swamp cabbage, water hyacinth, calamus and cress are planted on the ecological purification pond floating bed.
8. The recirculating aquaculture device for the freshwater pond of claim 1, wherein: the integrated tank (2) is 20cm lower than the sedimentation tank (3), the oxidation tank (4), the ecological purification tank (5), the filter dam (6) and the subsurface flow wetland dam (7).
9. A recirculating aquaculture system for freshwater ponds according to any one of claims 1 to 8, wherein:
s1: solid-liquid separation;
tail water flows into a solid-liquid separator which does not need to use electric power, and is automatically separated and settled, and a filter screen (2014) is regularly washed, so that solid matters are used for planting vegetables and the like;
s2: liquid precipitation;
the liquid separated by the S1 enters a sedimentation tank (3) for sedimentation treatment;
s3: oxidizing;
the water after S2 enters the oxidation pond (4) through the filtering dam (6) to be oxidized;
s4: filtering;
filtering the 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 S4 enters an ecological purification tank (5), and an ecological purification pond floating bed with a zigzag structure is arranged in the ecological purification tank (5);
s6: biological purification;
filter feeding fishes are put into the ecological purifying pool (5) to filter and feed phytoplankton, so that the water quality is further purified;
s7: recirculating aquaculture
The tail water of the final collecting tank (2) can completely meet the purpose of circulating water culture after being subjected to a whole set of purification treatment, and only part of fresh water needs to be added in the culture process to supplement the evaporation capacity of the system.
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