CN109924151A - A kind of device for culturing prawn and method of continuous concentration blowdown - Google Patents
A kind of device for culturing prawn and method of continuous concentration blowdown Download PDFInfo
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- CN109924151A CN109924151A CN201910212964.5A CN201910212964A CN109924151A CN 109924151 A CN109924151 A CN 109924151A CN 201910212964 A CN201910212964 A CN 201910212964A CN 109924151 A CN109924151 A CN 109924151A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses the device for culturing prawn and method of a kind of continuous concentration blowdown, the high-order aquaculture pond of sewage draining exit is equipped with including bottom, feature is that the water surface of high-order aquaculture pond is provided with an at least waterwheel, high-order aquaculture pond is vertically arranged at least one air lift blowdown apparatus, air lift blowdown apparatus includes the stripping tube being docked and connected with sewage draining exit, it is provided with the nanometer aeration pipe of at least one connection pressure air pipe in stripping tube, is provided with electromagnetic air valve on pressure air pipe；The bottom sides of stripping tube offer inlet opening, lower part in stripping tube is provided with quill, the inner wall of quill is fixedly installed at least one layer of for retaining the U-shaped strainer of solid particle residue, sewage draining exit is connected with the sewage pipe with electromagnetism blowdown valve row, electromagnetic air valve and electromagnetism blowdown valve are electrically connected with automatic controller for water level respectively, advantage is to realize to cut dirty concentration and continuous automatic pollution discharge in breeding process, eliminates the slough of feed coefficient sewage draining exit, improves.
Description
Technical field
The invention belongs to technical field of aquaculture, a kind of device for culturing prawn more particularly, to continuous concentration blowdown and
Method.
Background technique
Penaeus Vannmei is domestic important one of aquaculture kind, is occupied an important position in fishery economic, is fishing
Industry synergy, fisherman's increased income are made that significant contribution.Current prawn high-density breeding mode can be divided into industrial circulating water and support
Mode and high-elevation breeding pond mode are grown, and based on high-elevation breeding pond mode.Industrial circulating water cultivating mode is by aquaculture pond
Water purified treatment is carried out outside pond, it is recycled；Culturing pool generally recycles 5-6 times daily, needs by external water
Treatment facility equipment, capital construction investment and its operating cost are high, are difficult to be widely applied at present, it is also difficult to be suitable for existing feed coefficient
Transformation.
Bottom of pond is generally designed to pot bottom type by high-elevation breeding pond, stirs to form rotary water current by waterwheel, will be sunken to bottom of pond
Residual bait and excrement be pooled near the sewage draining exit in pot bottom type center, then pass through sewage draining exit be discharged.Turbulent water in order to prevent
The residual bait and excrement near sewage draining exit are collected in, feed coefficient sewage draining exit is nearby unable to aeration aerating, thus in feed coefficient sewage draining exit
Surrounding forms slough, and leading to sewage draining exit, nearby dissolved oxygen is extremely low, or even anaerobic state occurs, and effective activity space of prawn is pressed
Contracting；And under anoxic and anaerobic condition, residual bait and excrement can decompose and generate the noxious materials such as ammonia nitrogen, hydrogen sulfide, so that blowdown
Water blacks smelly near mouthful, so when feed coefficient blowdown, it will usually smelly Heisui River be discharged.Before general prawn high-elevation breeding pond
Phase daily blowdown 1 time, later period daily blowdown 3-5 times belong to interval time longer intermittent blowdown, during which residual bait and excrement
Dispersion can be dissolved or dissolve in water body under microbial decomposition, so that breeding water body water quality runs down, so right at present
Shrimp high-elevation breeding pond is on the basis of blowdown, it is still desirable to periodically change water largely to maintain cultivation water.However due to aquaculture pond
The differences such as water quality, the water temperature of inside and outside water body are big, and the regular water that largely changes easily causes prawn stress reaction, and then it is high to influence prawn
The pool cultivated success rate in position.
Residual bait and the excrement residence time in aquaculture pond are too long, are the roots of aquaculture pond water quality deterioration, and near sewage draining exit
It is unable to aeration aerating, slough is formed, exacerbates water quality deterioration process.Therefore, it is necessary to by residual bait and excrement in solid form by
It is removed in time in aquaculture pond, and eliminates slough.Also there are the improvement to prawn culturing blowdown mode, such as patent at present
CN201210251885 and document " using the cultivating system of foam separator " are proposed by external air-floating apparatus, to small
Granule foreign and protein are continuously separated, but the bulky grain excrement in aquaculture pond, residual bait still need through traditional blowdown
Mode interval is discharged, and solves the problems, such as without essence；CN201611106726 proposes the batch production pair based on air lift circulation
Shrimp aquaculture system and method, essence are a kind of external circulating water treatment cultivating systems by air lift blowdown apparatus water lift, it is difficult to
Feed coefficient applied to big water body.Therefore, a kind of prawn culturing that residual bait excrement can be concentrated and feed coefficient is discharged in time is needed
Device and method.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of realize in the breeding process to cut dirty concentration and continuous automatic
The slough of feed coefficient sewage draining exit is eliminated in blowdown, improves the prawn culturing of the continuous concentration blowdown of high-elevation breeding pond water quality
Device and method.
The technical scheme of the invention to solve the technical problem is: a kind of prawn culturing of continuous concentration blowdown fills
It sets, including rectangular or circular high-order aquaculture pond, the bottom of the high-order aquaculture pond is provided at least one sewage draining exit, described
The water surface of high-order aquaculture pond be provided at least one for promoting full water body to form the waterwheel of rotating flow, the high position is supported
It grows and is vertically arranged at least one air lift blowdown apparatus for being used to form ascending air in pond, the air lift blowdown apparatus includes
Stripping tube, the top opening of the stripping tube stretch out the water surface of the high-order aquaculture pond and its bottom with it is corresponding described in
Sewage draining exit is docked and connected, and at least one nanometer aeration pipe is provided in the stripping tube, and the nanometer aeration pipe passes through pressure
Power air hose is connect with external aerator, is provided on the pressure air pipe for controlling the pressure air pipe pipeline
The electromagnetic air valve of on-off；
The bottom sides of the stripping tube offer inlet opening, and the lower part in the stripping tube, which is provided with, to be used to open and close
The quill of the inlet opening is closed, the inner wall of the quill is fixedly installed at least one layer of for retaining solid
The U-shaped strainer of grain residue on the inner wall of the stripping tube and is located at below the nanometer aeration pipe and is provided with for limiting
The limited location snap ring of the fixed quill lifting position；
The sewage draining exit is connected with sewage pipe, is provided with electromagnetism blowdown valve on the sewage pipe, the stripping tube it is upper
Portion's water outlet is nearby provided with automatic controller for water level, the electromagnetic air valve and the electromagnetism blowdown valve respectively with it is described
Automatic controller for water level electrical connection.
Preferably, the bottom of the high-order aquaculture pond is with sewage draining exit described in ‰ gradient slope aspect of 5-20.Bottom ramp has
Central blow-down mouth is slided to conducive to the acceleration of residual bait excrement.
Preferably, one layer is arranged on the outside of the inlet opening for prevent will be anti-escape in the shrimp sucking stripping tube
Net.After avoiding shrimp from sucking, being intercepted by strainer can finally cause damages as refluence blowdown water flow is discharged culture pond.
Preferably, the U-shaped strainer is two layers and is followed successively by from top to bottom for retaining bulky grain residual bait and excrement
Level-one U-shaped strainer and second level U-shaped strainer for retaining small granular suspended matters.Realize that excrement and residual bait and little particle suspend in water
The classification of object retains.
Preferably, the mesh number of the level-one U-shaped strainer is 50-150 mesh, and the mesh number of the second level U-shaped strainer is
150-300 mesh.
Preferably, the width of the high-order aquaculture pond is 4-20 times of the diameter of the stripping tube, the activity
The diameter of sleeve is slightly less than the diameter of the stripping tube.
Preferably, the sewage draining exit is one and the bottom center of the high-order aquaculture pond, the gas is arranged in
Blowdown apparatus is mentioned to be one and be disposed longitudinally on the center of the high-order aquaculture pond.
Preferably, the air lift blowdown apparatus number is 2N+1, and the air lift blowdown apparatus described in one of them is longitudinal
The central and remaining air lift blowdown apparatus that the high-order aquaculture pond is arranged in is evenly arranged on its periphery, positioned at periphery
The center sewage pipe of the sewage pipe access of the air lift blowdown apparatus high-order aquaculture pond, the gas positioned at periphery
Mention the sewage draining exit of blowdown apparatus towards and the water (flow) direction that is formed of the waterwheel operation agitation it is consistent, wherein N=1,2,3,4 or
5。
A kind of method that the device for culturing prawn of above-mentioned continuous concentration blowdown carries out prawn culturing, comprising the following steps:
(1) waterwheel is opened, under waterwheel effect, rotary water current is formed in high-order aquaculture pond, promotes the residual bait excrement of bottom of pond gradually
Collect to high-order aquaculture pond center；
(2) electromagnetic air valve is opened, air is conveyed to nanometer aeration pipe by pressure air pipe, forms mixing wastewater with air in stripping tube
Object, water level rise, and carry out water lift, and under ascending current souring, quill rises to limited location snap ring position, high position cultivation
Water inlet is sufficiently opened in bottom of pond portion inlet opening, and passes through solid particle residue in U-shaped strainer trap water；
(3) as U-shaped strainer trapped substance increases, the water flux of U-shaped strainer is gradually reduced, the water level in stripping tube therewith gradually under
Drop, when drop to preset water level when, automatic controller for water level issues control signal, closes electromagnetic air valve and synchronous opens
Electromagnetism blowdown valve on sewage pipe, nanometer aeration pipe stop working, and blowdown starts, and the water in stripping tube starts to flow backwards immediately,
Under gravity and downward water flow collective effect, quill decline, inlet opening is blocked closing by quill, is retained on U-shaped strainer
Solid particle residue be reversed the flushing of flowing water stream, pass through sewage draining exit and high-order aquaculture pond be discharged, U-shaped strainer restores filtering and cuts
Ability is stayed, after control of sewage disposal 10-20 seconds, closes electromagnetism blowdown valve, blowdown stops, while opening electromagnetic air valve, nanometer aeration
Pipe is resumed work, into next work filter cycle；It is added during prawn culturing according to the 5-30% that bait adds quality
Carbon source forms a kind of prawn bacterium phase cultural method that continuous blowdown is concentrated.
The carbon source is molasses or brown sugar.
Compared with the prior art, the advantages of the present invention are as follows:
1) residence time of residual bait and excrement in breeding water body is short, and the water quality of aquaculture pond can maintain a good state for a long time.
Existing high position aquaculture pond, it is primary to be generally spaced blowdown in 4-6 hours.Using apparatus of the present invention, it is pooled to the excrement of sewage draining exit and residual
Bait is stripped the strainer in pipe at any time and intercepts concentration and high-order aquaculture pond is discharged by backwash quickly, and residual bait and excrement are cultivating
The effects of residence time in water body is short, can significantly reduce by dissolving, decomposing enters the total amount of pollutant of aquaculture pond water body,
Ensure breeding water body water quality；
2) entire high-order aquaculture pond is without slough.It is promoted since central blow-down mouth bottom water body is persistently stripped blowdown apparatus, gas
It mentions blowdown apparatus while there is aeration aerating effect, slough, anoxic zone is not present in entire high position aquaculture pond, and there is no to prawn
It survives unfavorable space, the space of high-order aquaculture pond is utilized effectively；
3) cultivation water consumption is low.Since filtering and concentrating acts on, water required for same contaminant is discharged and is greatly decreased, it is entire to support
Period water consumption is grown to be greatly reduced；
4) dirt collection speed is fast.Since air lift blowdown apparatus inlet opening is set at bottom blow-down mouth, continues upward and promote bottom water
Body, bottom water body constantly flow to central blowdown pipe, accelerate bottom of pond excrement and residual bait to sewage draining exit collection speed；
5) carbon source dosage is low.Carbon source dosage only accounts for the 5-30% of daily ration, feeding quantity, with current biological flocculation aquaculture model according to 1:1
Carbon source dosage is compared, and carbon source dosage significantly reduces, and high bacterium phase is formed in high-order aquaculture pond, improves cultivating system oneself
My detergent power, purification remain on the pollutant of breeding water body, realize that cultivating system changes water less or even do not change water, and then significantly drop
Total quantity of exchanged water in the low culture-cycle；
6) be conducive to the stable operation that tail water concentrates purifying processing device.Continuous blowdown process is also beneficial to discharge tail water and concentrates
The stable operation of purifying processing device guarantees good clean-up effect.
In conclusion the present invention a kind of device for culturing prawn and method of continuous concentration blowdown, are arranged tool at sewage draining exit
There is the air lift blowdown apparatus of excrement and residual bait filtering retention functions, residual bait excrement can be concentrated and feed coefficient, bottom are discharged in time
Water body near sewage draining exit by aeration aerating and is promoted to the water surface by air lift blowdown apparatus, and stagnant water is not present in the full pond of feed coefficient
Area changes the anoxic anaerobic state near current prawn culturing higher-place pond sewage draining exit, increases effective activity space of prawn, and
By putting into a certain number of carbon sources daily, a kind of prawn bacterium phase cultural method of continuous concentration blowdown is formed.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the embodiment 1 for the device for culturing prawn of small area high position aquaculture pond；
Fig. 2 is structural schematic diagram of the embodiment 2 for the device for culturing prawn of large area high position aquaculture pond；Wherein marked such as in figure
Under: 1 high-order aquaculture pond, 2 sewage draining exits, 3 waterwheels, 4 air lift blowdown apparatus, 5 stripping tubes, 6 nanometer aeration pipes, 7 pressure air pipes, 8
Electromagnetic air valve, 9 inlet openings, 10 quills, 11 level-one U-shaped strainers, 12 second level U-shaped strainers, 13 limited location snap rings, 14 blowdowns
Pipe, 15 electromagnetism blowdown valves, 16 automatic controller for water level, 17 anti-escape networks.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1
A kind of device for culturing prawn of continuous concentration blowdown, as shown in Figure 1, include rectangular or circular high-order aquaculture pond 1, it is high-order
The bottom center of aquaculture pond 1 is provided with a sewage draining exit 2, and the water surface of high-order aquaculture pond 1 is provided at least one for promoting entirely
Water body forms the waterwheel 3 of rotating flow, and the center of high-order aquaculture pond 1 is vertically arranged with the air lift blowdown for being used to form ascending air
Device 4, air lift blowdown apparatus 4 include stripping tube 5, and the top opening of stripping tube 5 stretches out the water surface of high-order aquaculture pond 1 and its bottom
It is docked and connected with sewage draining exit 2, at least one nanometer aeration pipe 6 is provided in stripping tube 5, nanometer aeration pipe 6 passes through pressure air
Pipe 7 is connect with external aerator, and the electromagnetic air for controlling 7 pipeline on-off of pressure air pipe is provided on pressure air pipe 7
Valve 8；
The bottom sides of stripping tube 5 offer inlet opening 9, and the lower part in stripping tube 5 is provided with for opening and closing inlet opening 9
Quill 10, the inner wall of quill 10 is successively fixedly installed from top to bottom for retaining bulky grain residual bait and excrement
Level-one U-shaped strainer 11 and second level U-shaped strainer 12 for retaining small granular suspended matters on the inner wall of stripping tube 5 and are located at nanometer
The lower section of aeration tube 6 is provided with the limited location snap ring 13 for limiting 10 lifting position of quill；
Sewage draining exit 2 is connected with sewage pipe 14, and electromagnetism blowdown valve 15 is provided on sewage pipe 14, and the top water outlet of stripping tube 5 is attached
It closely is provided with automatic controller for water level 16, electromagnetic air valve 8 and electromagnetism blowdown valve 15 are electrically connected with automatic controller for water level 16 respectively
It connects.
In this particular embodiment, the bottom of high-order aquaculture pond 1 is conducive to residual bait with ‰ gradient slope aspect sewage draining exit 2 of 5-20
Excrement acceleration slides to central blow-down mouth 2；The mesh number of level-one U-shaped strainer 11 is 50-150 mesh, the mesh number 150- of second level U-shaped strainer 12
300 mesh；The width of high-order aquaculture pond 1 is 4-20 times of the diameter of stripping tube 5, and the diameter of quill 10 is slightly less than stripping tube 5
Diameter；The outside of inlet opening 9 is arranged one layer for preventing the anti-escape network 17 in shrimp sucking stripping tube 5.
The method for carrying out prawn culturing using the device for culturing prawn of above-mentioned continuous concentration blowdown, comprising the following steps:
(1) open waterwheel 3, under the effect of waterwheel 3, form rotary water current in high-order aquaculture pond 1, promote the residual bait excrement of bottom of pond by
It walks and collects to high-order 1 center of aquaculture pond；
(2) electromagnetic air valve 8 is opened, air is conveyed to nanometer aeration pipe 6 by pressure air pipe 7, forms air water in stripping tube 5
Mixture, water level rise, and carry out water lift, and under ascending current souring, quill 10 rises to 13 position of limited location snap ring,
Water inlet is sufficiently opened in high-order 1 bottom inlet opening 9 of aquaculture pond, and passes through solid particle residue in U-shaped strainer trap water；
(3) as U-shaped strainer trapped substance increases, the water flux of U-shaped strainer is gradually reduced, and the water level in stripping tube 5 is therewith gradually
Decline, when drop to preset water level when, automatic controller for water level 16 issues control signal, closes electromagnetic air valve 8 and same
Step opens the electromagnetism blowdown valve 15 on sewage pipe 14, and nanometer aeration pipe 6 stops working, and blowdown starts, and the water in stripping tube 5 is immediately
Start to flow backwards, under gravity and downward water flow collective effect, quill 10 declines, and pass is blocked by quill 10 in inlet opening 9
It closes, the solid particle residue retained on U-shaped strainer is reversed the flushing of flowing water stream, and high-order aquaculture pond is discharged by sewage draining exit 2
1, U-shaped strainer restores filtering interception capacity, after control of sewage disposal 10-20 seconds, closes electromagnetism blowdown valve 15, blowdown stops, opening simultaneously
Electromagnetic air valve 8 is opened, nanometer aeration pipe 6 is resumed work, into next work filter cycle；During prawn culturing according to
The 5-30% that bait adds quality adds carbon source (molasses or brown sugar etc.), and the prawn bacterium for forming a kind of concentration continuous blowdown is mutually supported
Grow method.
Embodiment 2
With above-described embodiment 1, difference is: as shown in Fig. 2, when individually cultivation shrimp ponds area is larger, to accelerate to collect dirt, discharging pollution
Multiple air lift blowdown apparatus 4 can be arranged in 14 certain distance of distance center sewage pipe, by each air lift blowdown apparatus 4 in speed
Sewage pipe 14 access shrimp ponds center sewage pipe 14, while by all air lift blowdown apparatus 4 in addition to shrimp ponds center sewage pipe 14
2 direction of sewage draining exit, with waterwheel 3 run agitation formed water (flow) direction it is consistent, using air lift blowdown apparatus 4 go out flow reinforce water
Rotation, it is possible to reduce waterwheel 3 run number of units.
Above description is not limitation of the invention, and the present invention is also not limited to the example above.The art it is common
Within the essential scope of the present invention, the variations, modifications, additions or substitutions made also should belong to protection of the invention to technical staff
Range.
Claims (10)
1. a kind of device for culturing prawn of continuous concentration blowdown, including rectangular or circular high-order aquaculture pond, the high position are supported
The bottom for growing pond is provided at least one sewage draining exit, it is characterised in that: the water surface of the high-order aquaculture pond is provided at least one
For promoting full water body to form the waterwheel of rotating flow, at least one is vertically arranged in the high-order aquaculture pond for shape
At the air lift blowdown apparatus of ascending air, the air lift blowdown apparatus includes stripping tube, the top opening of the stripping tube
It stretches out the water surface of the high-order aquaculture pond and its bottom is docked and connected with the corresponding sewage draining exit, in the stripping tube
It is provided at least one nanometer aeration pipe, the nanometer aeration pipe is connect by pressure air pipe with external aerator, described
Pressure air pipe on be provided with electromagnetic air valve for controlling the pressure air pipe pipeline on-off；
The bottom sides of the stripping tube offer inlet opening, and the lower part in the stripping tube, which is provided with, to be used to open and close
The quill of the inlet opening is closed, the inner wall of the quill is fixedly installed at least one layer of for retaining solid
The U-shaped strainer of grain residue on the inner wall of the stripping tube and is located at below the nanometer aeration pipe and is provided with for limiting
The limited location snap ring of the fixed quill lifting position；
The sewage draining exit is connected with sewage pipe, is provided with electromagnetism blowdown valve on the sewage pipe, the stripping tube it is upper
Portion's water outlet is nearby provided with automatic controller for water level, the electromagnetic air valve and the electromagnetism blowdown valve respectively with it is described
Automatic controller for water level electrical connection.
2. a kind of device for culturing prawn of continuous concentration blowdown according to claim 1, it is characterised in that: the high position
The bottom of aquaculture pond is with sewage draining exit described in ‰ gradient slope aspect of 5-20.
3. a kind of device for culturing prawn of continuous concentration blowdown according to claim 1, it is characterised in that: the water inlet
Be arranged one layer of anti-escape network for preventing from shrimp being sucked in the stripping tube on the outside of hole.
4. a kind of device for culturing prawn of continuous concentration blowdown according to claim 3, it is characterised in that: the U-shaped
Strainer is two layers and is followed successively by level-one U-shaped strainer for retaining bulky grain residual bait and excrement from top to bottom and for retaining small
The second level U-shaped strainer of grain suspended matter.
5. a kind of device for culturing prawn of continuous concentration blowdown according to claim 4, it is characterised in that: described, institute
The mesh number for the level-one U-shaped strainer stated is 50-150 mesh, and the mesh number of the second level U-shaped strainer is 150-300 mesh.
6. a kind of device for culturing prawn of continuous concentration blowdown according to any one of claims 1-5, it is characterised in that:
The width of the high-order aquaculture pond is 4-20 times of the diameter of the stripping tube, and the diameter of the quill is slightly less than
The diameter of the stripping tube.
7. a kind of device for culturing prawn of continuous concentration blowdown according to claim 6, it is characterised in that: the blowdown
Mouth is one and the bottom center of the high-order aquaculture pond is arranged in, and the air lift blowdown apparatus is for one and longitudinally disposed
In the center of the high-order aquaculture pond.
8. a kind of device for culturing prawn of continuous concentration blowdown according to claim 6, it is characterised in that: the air lift
Blowdown apparatus number is 2N+1, and the air lift blowdown apparatus described in one of them is disposed longitudinally in the high-order aquaculture pond
It entreats and the remaining air lift blowdown apparatus is evenly arranged on its periphery, positioned at the sewage pipe of the air lift blowdown apparatus of periphery
The center sewage pipe of the access high-order aquaculture pond, sewage draining exit direction and institute positioned at the air lift blowdown apparatus of periphery
The water (flow) direction that the waterwheel operation agitation stated is formed is consistent, wherein N=1,2,3,4 or 5.
9. a kind of method that the device for culturing prawn using continuous concentration blowdown as claimed in claim 6 carries out prawn culturing,
Be characterized in that the following steps are included:
(1) waterwheel is opened, under waterwheel effect, rotary water current is formed in high-order aquaculture pond, promotes the residual bait excrement of bottom of pond gradually
Collect to high-order aquaculture pond center；
(2) electromagnetic air valve is opened, air is conveyed to nanometer aeration pipe by pressure air pipe, forms mixing wastewater with air in stripping tube
Object, water level rise, and carry out water lift, and under ascending current souring, quill rises to limited location snap ring position, high position cultivation
Water inlet is sufficiently opened in bottom of pond portion inlet opening, and passes through solid particle residue in U-shaped strainer trap water；
(3) as U-shaped strainer trapped substance increases, the water flux of U-shaped strainer is gradually reduced, the water level in stripping tube therewith gradually under
Drop, when drop to preset water level when, automatic controller for water level issues control signal, closes electromagnetic air valve and synchronous opens
Electromagnetism blowdown valve on sewage pipe, nanometer aeration pipe stop working, and blowdown starts, and the water in stripping tube starts to flow backwards immediately,
Under gravity and downward water flow collective effect, quill decline, inlet opening is blocked closing by quill, is retained on U-shaped strainer
Solid particle residue be reversed the flushing of flowing water stream, pass through sewage draining exit and high-order aquaculture pond be discharged, U-shaped strainer restores filtering and cuts
Ability is stayed, after control of sewage disposal 10-20 seconds, closes electromagnetism blowdown valve, blowdown stops, while opening electromagnetic air valve, nanometer aeration
Pipe is resumed work, into next work filter cycle；It is added during prawn culturing according to the 5-30% that bait adds quality
Carbon source forms a kind of prawn bacterium phase cultural method that continuous blowdown is concentrated.
10. a kind of prawn culturing method of continuous concentration blowdown according to claim 9, it is characterised in that: the carbon
Source is molasses or brown sugar.
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| CN201910212964.5A CN109924151B (en) | 2019-03-20 | 2019-03-20 | Prawn culture device and method capable of continuously concentrating and discharging pollution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110800594A (en) * | 2019-12-12 | 2020-02-18 | 厦门理工学院 | Prawn culture method |
| CN110810319A (en) * | 2019-11-27 | 2020-02-21 | 内江师范学院 | Self-filtering sewage discharge system for circulating water culture of elevated tank |
| CN111149760A (en) * | 2020-02-10 | 2020-05-15 | 中国水产科学研究院渔业机械仪器研究所 | Shrimp culture system that solid content discharged |
| CN112715471A (en) * | 2020-12-11 | 2021-04-30 | 宁波大学 | Continuous concentration and pollution discharge device and method for shrimp culture system |
| CN112772538A (en) * | 2021-01-11 | 2021-05-11 | 宁波大学 | Shrimp pond rotary filtering, concentrating and pollution discharging device and method |
| CN113475449A (en) * | 2021-08-08 | 2021-10-08 | 广州蓝灵水产科技有限公司 | Intelligent and efficient aquaculture sewage disposal device and working method thereof |
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