CN210915740U - Surrounding type bidirectional reflux multistage biological filtration tank body - Google Patents
Surrounding type bidirectional reflux multistage biological filtration tank body Download PDFInfo
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- CN210915740U CN210915740U CN201921493103.0U CN201921493103U CN210915740U CN 210915740 U CN210915740 U CN 210915740U CN 201921493103 U CN201921493103 U CN 201921493103U CN 210915740 U CN210915740 U CN 210915740U
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Abstract
The utility model relates to a surrounding type bidirectional reflux multistage biofiltration cell body, which comprises a civil cell body, wherein the civil cell body comprises an inner cell and an outer cell; the outer pool comprises a precipitation sewage discharge area, an axial flow pump water supply area and a circulating water purification area; the water in the axial-flow pump water supply area is pumped into the fish seed culture area of the inner pool, the water in the precipitation sewage discharge area flows to the axial-flow pump water supply area after passing through the circulating water purification area, and the bottom of the fish seed culture area of the inner pool is communicated with the precipitation sewage discharge area. The biological filtration tank body of the utility model improves the purification efficiency of the culture water body, reduces the water supplement amount of the culture water, reduces the operation cost of the proliferation station,through statistics, the daily water supplement amount of the fry breeding circulating water system of the breeding station in the peak period is about 150m3The daily water supplement amount of each fry rearing pond in peak period is about 1.5m3The daily water supplement amount is far lower than the daily water supplement amount in the peak period of running water culture and conventional circulating water culture.
Description
Technical Field
The utility model relates to a filtration facility in breeding station fingerling cultivation pond, concretely relates to surrounding type bidirectional reflux multistage biofiltration cell body.
Background
The Jinshajiang white crane beach and Wudongde hydropower stations are two hydropower stations at the upstream step of the Jinshajiang downstream river reach, the installed capacities are 1600 ten thousand kilowatts and 1020 ten thousand kilowatts respectively, and the total installed capacity 2620 ten thousand kilowatts is 1.16 times that of the three gorges hydropower stations. In order to reduce the influence of two hydropower stations on fish resources in the downstream river section of the Jinshajiang river after the two hydropower stations are built, according to the requirements of' research on development environment and countermeasure measures of steps of downstream hydropower stations of the Jinshajiang river (2011 of Chinese hydropower consultants), the fish releasing types of the fish proliferation and releasing station of the white crane beach Wudongde hydropower station are 8, namely Changyi loach, schizothorax parvittatus, white turtle releasing, round mouth copper fish, kistrogobio ventralis, weever carp, Sichuan white turtle and Kinetoglanis procumbens, and the annual releasing rule is 105 ten thousand. The breeding and releasing station for the Wudong de fishes in the white Crane beach is located on a gentle slope of the downstream construction period of the right bank of the Wudong de hydropower station, the total engineering area is 77078 square meters, the total construction area is 17041.7 square meters, and the two indoor fry breeding workshops are located on a 888m platform. The proliferation release station was built and put into use in 2016 at 6 months.
The propagation and releasing station for Wudongde of white Crane beach is located in the dry and hot valley area, the average temperature of the whole year is 20.9 ℃, the average temperature of the highest month is 26.9 ℃ (7 months), the average temperature of the lowest month is 12.3 ℃ (1 month), the extreme maximum is 42.7 ℃, and the average ground temperature of the valley in summer (5-8 months) is about 30.9 ℃. The temperature of the field is high, the gradient is large, water taking is difficult, and the key of success and failure of the project is how to reduce the breeding energy consumption, save the breeding water and improve the breeding efficiency. Traditional artificial breeding more adopts flowing water mode of breeding, and the fry rearing pond is mostly aboveground formula, and circulating water treatment adopts to concentrate to purify the back and then pours into each cultivation cell body into more. For a white crane beach Wudongde proliferation and releasing station, the water lifting height of nearly 100m makes the running water culture mode difficult to implement, an overground culture pond body is easily influenced by high-temperature environment and temperature fluctuation to reduce the survival rate of fry, and the centralized purification of circulating water can generate higher energy consumption and simultaneously easily cause system collapse due to insufficient dissolved oxygen in a biofilter caused by blockage generated by precipitation of micro-particle substances.
In order to solve the series of key problems, the innovative concepts of a sunken circulating water fry culture pond and a surrounding type bidirectional backflow multistage biofilter are provided according to local conditions, so that the water consumption for culturing and culturing the fries is reduced, the influence of high-temperature environment and temperature fluctuation on the fry survival rate is also reduced, the unit energy consumption of a circulating water system is reduced, the biological treatment efficiency is improved, the risk of system collapse caused by insufficient dissolved oxygen in the biofilter due to blockage caused by precipitation of micro-particle substances is reduced, the operation cost and the culture risk of a proliferation station are reduced on the whole, and the innovation of all parties is gained.
SUMMERY OF THE UTILITY MODEL
For solving the above problem, the utility model provides a multistage biofiltration cell body of surrounding type two-way backward flow had both reduced the water consumption of breeding the cultivation fry, had also reduced high temperature environment and temperature fluctuation to the influence of fry survival rate, and the unit energy consumption that reduces circulating water system simultaneously has improved biological treatment efficiency, has reduced because of the risk that the micro-particulate matter deposits to produce and blocks up and lead to the fact the system to collapse in the biofilter insufficient dissolved oxygen.
The utility model adopts the technical proposal that: the utility model provides a multistage biofiltration cell body of two-way backward flow of surrounding type, includes the civil engineering cell body, its characterized in that: the civil engineering pond body comprises an inner pond serving as a fingerling cultivation area and an outer pond arranged on the periphery of the inner pond; the outer pool comprises a precipitation sewage discharge area, an axial-flow pump water supply area and a circulating water purification area arranged between the precipitation sewage discharge area and the axial-flow pump water supply area; the water in the axial-flow pump water supply area is pumped into the fish seed culture area of the inner pool, the water in the precipitation sewage discharge area flows to the axial-flow pump water supply area after passing through the circulating water purification area, and the bottom of the fish seed culture area of the inner pool is communicated with the precipitation sewage discharge area.
Preferably, the inner tank and the outer tank form an annular civil engineering tank body.
Furthermore, the civil engineering tank body is formed by pouring C25 concrete in situ, and the wall thickness of the tank body is 100-150 mm.
Preferably, the inner pond is a fish seed culture area with the diameter of 2000mm and the culture water volume of 2m3(ii) a The diameter of the outer tank is 3000mm, the outer tank is divided into a circulating water purification area, an axial flow pump water supply area and a precipitation sewage discharge area, and the depth of the outer tank is 650 mm.
Preferably, a plurality of upper partition plates and a plurality of lower partition plates are arranged in the circulating water purification area, the upper partition plates and the lower partition plates are arranged at intervals to partition the circulating water purification area into a plurality of small areas, the upper ends of the upper partition plates are higher than the water surface, and gaps are formed between the lower ends of the upper partition plates and the pool bottom; the upper ends of the lower partition plates are lower than the water surface, and the lower ends of the lower partition plates are attached to the bottom of the pool.
Furthermore, one side of the circulating water purification area, which is close to the precipitation and pollution discharge area, is provided with a lower partition plate, and one side of the circulating water purification area, which is close to the axial flow pump water supply area, is provided with an upper partition plate.
Furthermore, the upper partition plate and the lower partition plate are both prefabricated on site by C25 concrete, the width of the upper partition plate is 530mm, the thickness of the upper partition plate is 50mm, and the height difference between the adjacent partition plates is 20 mm.
Preferably, an oxygen increasing device is arranged in the civil engineering tank body and comprises an oxygen increasing fan, an air supply pipe and oxygen stones, the oxygen stones are arranged at the bottom of the civil engineering tank body, and the oxygen increasing fan supplies air to the oxygen stones through the air supply pipe.
Preferably, a drain pipe is pre-buried in the fish seed culture and precipitation area at the bottom of the inner pond, the drain pipe is communicated with the water return pipe through one end of a tee joint, impurities are discharged through the other end of the tee joint, and the fish seed culture and precipitation area is provided with an anti-escape net; and a blow-off pipe is embedded at the bottom of the precipitation blow-off area, and a blow-off control pipe is arranged at the blow-off port.
Preferably, the upper part of the precipitation sewage discharge area is provided with a water replenishing pipe.
The utility model discloses the beneficial effect who gains is:
the purification efficiency of the aquaculture water body is improved: the purification system of the fingerling cultivation water body adopts a flow-dividing treatment mode and is divided into two modes of workshop internal circulation and pool body internal circulation. And (3) circulation in a workshop: under the action of centripetal force, the sewage flowing out of a pipeline at the bottom of the center of a fish pond (a fish breeding area) is rich in residual bait and excrement, is collected to a water collecting pond through a water return pipe, is filtered by a micro-filter, is pumped out by a vertical centrifugal pump, is sterilized by an ultraviolet germicidal lamp and returns from a water inlet of a biological filter pond of each culture pond; internal circulation of the pool body: the water flowing out of the edge of the fish pond is less in particulate matters, is divided into two paths, namely a left path and a right path, enters the gravity open type biological filter pond after being preliminarily precipitated and filtered, is pumped back into the fish pond by the axial flow pump, is flushed out along the tangential direction, pushes the pond water to rotate, can adjust the water outlet angle of the axial flow pump as required, and slows down the water flow or stops the water flow to rotate. In order to ensure the water treatment effect, an axial flow pump (50-150W, the flow is 8-30 m) with low water head and large flow is designed3And/h), and the bottom of the biological filter tank is provided with an aeration stone to fully stir water flow without dead angles, so that toxic substances are prevented from being generated due to oxygen deficiency of the filter tank.
Reduce breed water moisturizing volume, reduce the operation cost of proliferation station: through two water purification modes of workshop internal circulation and pool body internal circulation, the water replenishing quantity of the system is reduced as much as possible on the premise of ensuring the water quality of the aquaculture water to reach the standard, so that the purposes of energy conservation and consumption reduction are achieved, and the running cost of the proliferation station is reduced. Through statistics, the daily water supplement amount of the fry breeding circulating water system of the breeding station in the peak period is about 150m3The daily water supplement amount of each fry rearing pond in peak period is about 1.5m3The daily water supplement amount is far lower than the daily water supplement amount in the peak period of running water culture and conventional circulating water culture.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic diagram showing the distribution of upper and lower partition plates in the circulating water purification zone;
fig. 4 is a schematic structural diagram of another embodiment of the present invention;
reference numerals: 1. an inner pool; 11. an escape-proof net; 2. an outer pool; 21. an axial flow pump water supply area; 22. a precipitation sewage draining area; 23. a circulating water purification area; 231. an upper partition plate; 232. a lower partition plate; 3. a gas supply pipe; 31. an aerolite; 4. a blow-off pipe; 41. a blowdown control pipe; 5. a water replenishing pipe; 6. circulating a water supply pipe; 7. a water return pipe; 8. and a water discharge pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the utility model discloses a multistage biofiltration cell body of surrounding type bidirectional reflux, including the civil engineering cell body, the civil engineering cell body includes interior pond 1 and outer pond 2, and interior pond 1 and outer pond 2 form an annular civil engineering cell body jointly, and interior pond 1 cultivates the district as the fingerling, and outer pond 2 surrounds interior pond 1 and sets up, and outer pond 2 divides into four regions altogether, and an axial-flow pump water supply district 21, a sediment blowdown district 22 and two circulating water purification districts 23, and two circulating water purification districts 23 set up between axial-flow pump water supply district 21 and sediment blowdown district 22. The interior water of outer pond 2 is gone into the fingerling of interior pond 1 and is cultivated the district in axial-flow pump water supply area 21 position department in, and axial-flow pump water supply area 21 water level descends, and the water of sediment blowdown district 23 flows to axial-flow pump water supply area 21 behind the circulating water purification district 23, and interior pond 1 bottom and sediment blowdown district 23 intercommunication, after the rivers in the sediment blowdown district 23 flow to axial-flow pump water supply area 21, the water of interior pond 1 supplyes sediment blowdown district 23, and interior pond 1 and outer pond 2 form the circulating water. The purified aquaculture water is guided into the fish culture area by the surrounding water supply, so that the purification efficiency of the aquaculture water body is improved, and the aquaculture water replenishing amount is reduced.
Referring to fig. 3, a plurality of upper partition plates 231 and a plurality of lower partition plates 232 are arranged in the circulating water purification zone 23, the plurality of upper partition plates 231 and the plurality of lower partition plates 232 are arranged at intervals to partition the circulating water purification zone 23 into a plurality of small areas, the upper ends of the plurality of upper partition plates 231 are higher than the water surface, and gaps are arranged between the lower ends of the plurality of upper partition plates 231 and the bottom of the tank for water to pass through; the upper ends of the lower partition plates 231 are lower than the water surface, and the lower ends of the lower partition plates are attached to the bottom of the tank. Form between the adjacent last baffle 231 and the lower baffle 232 and filter the passageway, a plurality of last baffles 231 and a plurality of lower baffle 232 form a plurality of filtration passageways, and the water in interior pond 1 and outer pond 2 is in the circulation process, through natural precipitation filtration aquatic impurity when filtering the passageway.
In this embodiment, a lower partition 232 is disposed on one side of the circulating water purifying region 23 close to the precipitation and drainage region 22, and an upper partition 231 is disposed on one side of the circulating water purifying region 23 close to the axial-flow pump water supply region 21. Go up baffle 231 and baffle 232 down and all adopt the on-spot prefabrication of C25 concrete to form, wide 530mm, thick 50mm, adjacent baffle height differs 20mm, and the sediment filter effect is better, and does not influence rivers.
In the embodiment, the civil engineering tank body is formed by pouring C25 concrete in situ, and the wall thickness of the tank body is 100-150 mm. The diameter of the inner pond 1 is 2000mm, the depth of the inner pond is 650mm, the inner pond is a fish culture area, and the volume of the culture water body is 2m3(ii) a The diameter of the outer pool 2 is 3000mm, the outer pool is divided into a circulating water purification area 23, an axial flow pump water supply area 21 and a sedimentation sewage discharge area 22, and the depth of the outer pool is 650mm (300 mm higher than the ground).
An oxygenation device is arranged in the civil engineering pond body and comprises oxygenation fans, an air supply pipe 3 and an oxygen stone 31, the oxygenation fans are symmetrically arranged at the middle outer wall of each workshop, two oxygenation fans are arranged in each workshop and are connected with the cultivation pond body through the phi 90 air supply pipe 3, the rated power of each fan is 1.1KW, and the rated voltage is 380V; the air supply pipe 3 is made of latex, has different pipe diameters phi 90, phi 32 and phi 25, and is connected with the oxygen stone 31 at the bottom of the biological filter material through a pre-buried PVC protection pipe; the oxygen stone 31 is made of quartz or plastic and has a diameter of 50 mm. The oxygen stone 31 is arranged at the bottom of the civil engineering tank body, and the oxygen increasing fan supplies air to the oxygen stone 31 through the air supply pipe 3.
A drain pipe 4 is pre-buried in the fish seed culture settling zone at the bottom of the inner pond 1, the drain pipe 4 is communicated with a water return pipe 7 through one end of a tee joint and is connected with a drain pipe 8 through the other end of the tee joint to discharge impurities, and the fish seed culture settling zone is provided with an anti-escape net 11; a sewage discharge pipe 4 is embedded at the bottom of the precipitation sewage discharge area, and a sewage discharge control pipe 41 is arranged at the sewage discharge port.
The sewage flowing out from the pipeline at the bottom of the center of the fish pond under the action of centripetal force is rich in residual baits and excrement, is collected to a water collecting pond through a water return pipe 7, is filtered by a micro-filter, is pumped out by a vertical centrifugal pump, is sterilized by an ultraviolet sterilizing lamp, and returns to a sedimentation sewage discharge area 22 from a water inlet of a biological filter pond of each culture pond through a circulating water supply pipe 6.
In this embodiment, the upper part of the precipitation and sewage discharge area 22 is provided with a water replenishing pipe 5. Due to the replacement of lost water.
In the embodiment, in order to ensure the water treatment effect, an axial flow pump (50-150W, with 8-30m of flow) with low water head and large flow is adopted3And/h), and the bottom of the biological filter tank is provided with the aeration stone 31 to fully stir water flow without dead angles, so that toxic substances are prevented from being generated due to oxygen deficiency of the filter tank.
As shown in fig. 4, two civil engineering tanks may be arranged in parallel, and a plurality of civil engineering tanks may be arranged in parallel to form a large system.
The foregoing shows and describes the general principles and principal structural features of the invention. The present invention is not limited by the above-mentioned examples, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and improvements fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a multistage biofiltration cell body of two-way backward flow of surrounding type, includes the civil engineering cell body, its characterized in that: the civil engineering pond body comprises an inner pond serving as a fingerling cultivation area and an outer pond arranged on the periphery of the inner pond; the outer pool comprises a precipitation sewage discharge area, an axial-flow pump water supply area and a circulating water purification area arranged between the precipitation sewage discharge area and the axial-flow pump water supply area; the water in the axial-flow pump water supply area is pumped into the fish seed culture area of the inner pool, the water in the precipitation sewage discharge area flows to the axial-flow pump water supply area after passing through the circulating water purification area, and the bottom of the fish seed culture area of the inner pool is communicated with the precipitation sewage discharge area.
2. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: the inner tank and the outer tank form an annular civil engineering tank body.
3. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 2, wherein: the civil engineering tank body is formed by pouring C25 concrete in situ, and the wall thickness of the tank body is 100-150 mm.
4. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: the inner pond is a fish breeding area with the diameter of 2000mm and the volume of the aquaculture water body of 2m3(ii) a The diameter of the outer tank is 3000mm, the outer tank is divided into a circulating water purification area, an axial flow pump water supply area and a precipitation sewage discharge area, and the depth of the outer tank is 650 mm.
5. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: a plurality of upper partition plates and a plurality of lower partition plates are arranged in the circulating water purification area, the upper partition plates and the lower partition plates are arranged at intervals to divide the circulating water purification area into a plurality of small areas, the upper ends of the upper partition plates are higher than the water surface, and gaps are formed between the lower ends of the upper partition plates and the pool bottom; the upper ends of the lower partition plates are lower than the water surface, and the lower ends of the lower partition plates are attached to the bottom of the pool.
6. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 5, wherein: one side of the circulating water purification area, which is close to the precipitation sewage discharge area, is provided with a lower partition plate, and one side of the circulating water purification area, which is close to the axial flow pump water supply area, is provided with an upper partition plate.
7. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 5, wherein: the upper partition plate and the lower partition plate are both prefabricated by C25 concrete on site, the width of the upper partition plate is 530mm, the thickness of the upper partition plate is 50mm, and the height difference between the adjacent partition plates is 20 mm.
8. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: be equipped with oxygenation device in the civil engineering cell body, including oxygenation fan, air supply pipe and oxygen stone, the oxygen stone sets up at the civil engineering cell body bottom, the oxygenation fan passes through the air supply pipe to oxygen stone air feed.
9. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: a drain pipe is pre-buried in the fish seed culture and precipitation area at the bottom of the inner pond, the drain pipe is communicated with the water return pipe through one end of a tee joint, impurities are discharged through the other end of the tee joint, and the fish seed culture and precipitation area is provided with an anti-escape net; and a blow-off pipe is embedded at the bottom of the precipitation blow-off area, and a blow-off control pipe is arranged at the blow-off port.
10. The wrap-around, bi-directional recirculation, multi-stage biological filtration cell of claim 1, wherein: and a water replenishing pipe is arranged at the upper part of the precipitation sewage discharge area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921493103.0U CN210915740U (en) | 2019-09-06 | 2019-09-06 | Surrounding type bidirectional reflux multistage biological filtration tank body |
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| CN201921493103.0U CN210915740U (en) | 2019-09-06 | 2019-09-06 | Surrounding type bidirectional reflux multistage biological filtration tank body |
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| CN210915740U true CN210915740U (en) | 2020-07-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526507A (en) * | 2019-09-06 | 2019-12-03 | 长江勘测规划设计研究有限责任公司 | Circulating type bidirectional-reflux multi-stage biological filters pond body |
| CN115067267A (en) * | 2022-06-21 | 2022-09-20 | 山东省农业科学院 | Oxygen increasing device for circulating running water in rice and shrimp pond |
-
2019
- 2019-09-06 CN CN201921493103.0U patent/CN210915740U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526507A (en) * | 2019-09-06 | 2019-12-03 | 长江勘测规划设计研究有限责任公司 | Circulating type bidirectional-reflux multi-stage biological filters pond body |
| CN110526507B (en) * | 2019-09-06 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Surrounding type bidirectional reflux multistage biological filter tank body |
| CN115067267A (en) * | 2022-06-21 | 2022-09-20 | 山东省农业科学院 | Oxygen increasing device for circulating running water in rice and shrimp pond |
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