CN112715471A - Continuous concentration and pollution discharge device and method for shrimp culture system - Google Patents
Continuous concentration and pollution discharge device and method for shrimp culture system Download PDFInfo
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- CN112715471A CN112715471A CN202011450004.1A CN202011450004A CN112715471A CN 112715471 A CN112715471 A CN 112715471A CN 202011450004 A CN202011450004 A CN 202011450004A CN 112715471 A CN112715471 A CN 112715471A
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- 241000238557 Decapoda Species 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000010865 sewage Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 7
- 238000009395 breeding Methods 0.000 claims description 5
- 230000001488 breeding effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 238000009360 aquaculture Methods 0.000 claims description 4
- 244000144974 aquaculture Species 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000003203 everyday effect Effects 0.000 claims description 2
- 238000009313 farming Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 241000143060 Americamysis bahia Species 0.000 abstract 2
- 239000012141 concentrate Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
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- 238000011001 backwashing Methods 0.000 description 1
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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
- A01K63/10—Cleaning bottoms or walls of ponds or receptacles
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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
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- 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
- A01K63/006—Accessories for aquaria or terraria
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- 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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- Life Sciences & Earth Sciences (AREA)
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- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a continuous concentration and pollution discharge device and method for a shrimp culture system, which are characterized by comprising a sewage collecting pipe, an air lifting pipe, a sewage storage bin and a sewage discharge pipe, wherein the open end of the sewage collecting pipe is positioned at the center of the bottom of a culture pond, the other end of the sewage collecting pipe is communicated with the air lifting pipe, the air lifting pipe is communicated with the sewage storage bin through the sewage suction pipe, the sewage storage bin is surrounded by a bottom plate which is obliquely and downwards arranged, side baffles which are symmetrically arranged at two sides of the bottom plate, a detachable coarse filter screen and a detachable fine filter screen, the coarse filter screen is horizontally arranged between the two side baffles, the fine filter screen is obliquely or vertically arranged between the two side baffles, two ends of the coarse filter screen are respectively connected with the sewage suction pipe and the fine filter screen, the bottom of the fine filter screen is connected with the bottom plate, the top of the bottom plate is connected with the bottom of the sewage suction pipe, the lowest part of the bottom plate is communicated with the, Dead shrimps and ill shrimps with poor vitality are discharged after residual baits and excrement are concentrated, and the water consumption for pollution discharge is low.
Description
Technical Field
The invention belongs to the technical field of aquaculture, and particularly relates to a continuous concentration and pollution discharge device and method for a shrimp culture system.
Background
At present, the prawn culture in China mainly comprises several modes such as pond culture, high-level pond culture, industrial culture and the like, and in order to ensure that a culture system maintains a good water quality environment, the prawn culture system needs to discharge residual baits, excrement, shrimp shells, dead shrimps, ill shrimps with poor vitality and other pollutants out of the culture system in time. The basic form of the prawn breeding sewage discharge system is that a pot bottom or a conical bottom is adopted, various pollutants are collected near a central sewage discharge outlet at the bottom through water flow rotation, and then the pollutants are discharged out of the breeding system through a sewage discharge pipe under the action of water pressure difference. For preventing among the blowdown process that the shrimp is alive from being discharged, need set up at bottom center drain and prevent escaping the net, nevertheless cause the shrimp shell simultaneously, sick shrimp, the shrimp that dies is prevented escaping the net interception and can not discharge in the blowdown process, and cause submarine to prevent escaping the net and block up, owing to be difficult to change, and then influence later stage blowdown efficiency, and sick shrimp, the shrimp that dies decomposes very easily and then pollutes quality of water, consequently some shrimp farming systems set up dead shrimp simultaneously alone, sick shrimp blowdown pipe, independent control.
When live shrimps are prevented from escaping, how to timely discharge dirt such as shrimp shells, dead shrimps, ill shrimps with poor vitality, residual bait, excrement and the like in the culture water body out of a culture system is a key technology, and whether the prawn culture can be successful is determined. A Chinese utility model patent with publication number CN203735271U, which was published in 2013, 7, month and 30, discloses a high-level shrimp pool floating ball type sewage drainer; the device can effectively discharge the shrimp shells out of the pool, and is difficult to overhaul and replace during cultivation due to being arranged at a drain outlet at the bottom of the high-position shrimp culture pool. The Chinese patent invention with publication number CN105724307A, which is disclosed in 2016, 7, 6, discloses an air-lift type decontamination device suitable for indoor industrial culture of prawns; the device releases the bubble when passing through the blowdown, and the frightening live shrimp leaves the drain and is not discharged, then through gaseous promotion drain apron, gets rid of the dead shrimp in shrimp pond, the bad sick shrimp of vigor, incomplete bait, excrement and urine fast. However, the device is provided with a sewage discharge sleeve and a chassis which are also provided with the bottom of the aquaculture water body, dead shrimps, ill shrimps with poor vitality, residual bait and excrement are difficult to be discharged and observed, the live shrimps can still be taken out by water flow and are difficult to be noticed during sewage discharge, and the device is provided with a movable part, so that the water can be easily blocked by foreign matters. The Chinese invention patent with publication number CN109452215A, which is disclosed on 12.3.2019, discloses a device and a method for removing dirt and preventing live shrimps from escaping in a circulating water shrimp culture system, and the Chinese invention patent with publication number CN110278911A, which is disclosed on 27.2019, provides a split type surface dirt collector suitable for the live shrimps of the circulating water shrimp culture system to automatically return to a pond. The two devices provided by the invention can collect shrimp shells, dead shrimps and ill shrimps with poor vitality and prevent overflow from escaping the shrimps, but the overall structure of the dirt collector is more complex, residual bait and excrement are required to be connected into a subsequent separation device for further separation treatment, the dirt collector can only be used in a circulating water culture system in a matched manner, a water pump and other series of auxiliary equipment are required for the subsequent separation treatment, the investment cost and the energy consumption are higher, and the dirt collector is difficult for general farmers to bear. Therefore, the polluted shrimp and the sewage which can effectively concentrate the shrimp shells, the dead shrimps and the bad vitality are timely discharged, the sewage discharge amount is reduced, meanwhile, the living shrimps can be prevented from escaping, the sewage discharge device is convenient to overhaul and simple in structure, and the polluted shrimp high-density culture device has important significance for promoting the high-density culture of the shrimps.
Disclosure of Invention
The invention aims to solve the technical problem of providing a continuous concentration and pollution discharge device and method for a shrimp culture system, which can timely separate shrimp shells, dead shrimps and ill shrimps with poor vitality, concentrate residual baits and excrement and then discharge the shrimps and the ill shrimps with low pollution discharge water consumption.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a continuous concentrated waste fitting discharging of shrimp culture system, includes collection dirty pipe, air-lift pipe, storage dirty storehouse and blow off pipe, collection dirty pipe hug closely breed the bottom of the pool and lay, collection dirty pipe's open end be located breed bottom of the pool center department and its other end and air-lift pipe be linked together, air-lift pipe's upper portion lateral wall and be located surface of water department position through sewage suction pipe with storage dirty storehouse intercommunication, storage dirty storehouse by bottom plate, the symmetry that the slope set up downwards set up the side shield of bottom plate both sides, be used for holding back the detachable coarse strainer of jumbo size particulate matter and be used for holding back the detachable fine screen of small-size particulate matter enclose, the coarse strainer level set up two between the side shield and horizontal position slightly be less than the top of side shield, fine screen slope or vertical setting two between the side shield, the one end of coarse strainer with the bottom of soil pick-up pipe meet and its other end with the top of thin filter screen meet, the bottom of thin filter screen with the bottom of bottom plate meet, the top of bottom plate with the bottom of soil pick-up pipe meet, the bottom plate the lowest with the blow off pipe butt joint intercommunication, the coarse strainer with the vertical positive baffle that is provided with of department of meeting of thin filter screen, positive baffle and two the side shield between enclose into jumbo size particulate matter trapped area.
The pipe wall of collection dirty pipe on and be close to breed bottom of the pool side open and be equipped with a plurality of soil pick-up hole, the bottom opening part of collection dirty pipe be provided with the reducing that is used for reducing the opening part pipe diameter directly.
The open-top of air-lift pipe stretch out the surface of water of breeding the pond, air-lift intraductal being provided with an at least nanometer aeration pipe, nanometer aeration pipe be connected with outside oxygen-increasing machine through compressed air pipe.
The sewage storage bin is internally provided with a perforated water distribution plate which is used for reducing hydraulic impact and is vertically arranged at the lower part of one third of the front end of the coarse filter screen. Alleviate the great water conservancy impact that the rivers that fall down by the coarse strainer brought, avoid small-particle thing excrement and urine residual bait to be broken and reduce the filter screen and hold back efficiency, alleviate the excrement and urine disturbance of residual bait to storing up the dirty storehouse simultaneously.
The coarse filter screen is a plastic filter screen with the mesh number of 10-80 meshes, and the top of the side baffle is higher than the horizontal position of the coarse filter screen by 1-2 cm. Gradually changing the filter screen with low mesh number along with the growth of the prawns in the culture process.
The fine filter screen is a W-shaped filter bag type filter made of flexible materials with the mesh number of 150-300. The filtered water is directly returned to the aquaculture water body.
The sewage draining pipe is connected with a vacuum pipe through a water blocking device, the vacuum pipe is connected with an external vacuum pump, and an electromagnetic valve is arranged on the sewage draining pipe.
The coarse filter screen and the fine filter screen are respectively fixed in the side baffle in a clamping and embedding manner. The filter screen is convenient to replace.
The method for continuously concentrating and discharging the sewage of the shrimp culture system by using the device comprises the following steps:
(1) when feeding, closing the air intake of the air, and stopping water lifting and dirt collection;
(2) after bait is thrown for 1.0-1.5h, the prawn finishes feeding, and the air is lifted and air is introduced to begin water lifting and dirt collection; after the air stripping works for 1 hour, closing the air stripping, opening a vacuum pipeline to form siphon and start automatic sewage discharge, performing back flushing on the fine filter screen, after 2-3 minutes of sewage discharge, closing the vacuum pipeline, opening an electromagnetic valve, destroying the siphon, and stopping the sewage discharge; simultaneously, gas stripping is started again, and the next working cycle is started;
(3) the coarse strainer is inspected once every day, and shrimp shells, dead shrimps and ill shrimps with poor vitality which are trapped on the coarse strainer are manually removed.
Compared with the prior art, the invention has the advantages that: the invention relates to a continuous concentration and pollution discharge device and a continuous concentration and pollution discharge method for a shrimp culture system, wherein when an aeration nanotube in an air stripping pipe starts working, dirt (residual bait, excrement, shrimp shells, dead shrimps and ill shrimps with poor vitality) deposited at the bottom of a pond is sucked and lifted to flow out of a dirt suction pipe, water directly returns to a culture pond after being filtered and intercepted by two filter screens on the surface layer, wherein large-size particles such as the shrimp shells, the dead shrimps and the ill shrimps with poor vitality are intercepted by a first coarse filter screen and peripheral baffles and retained on the upper surface of the coarse filter screen for periodic manual cleaning, and small-size particles such as the residual bait, the excrement and the like pass through the first coarse filter screen but are intercepted and concentrated by a second fine filter screen, and then are discharged out of the culture pond by a pollution discharge pipe when automatic pollution discharge. Live shrimps intercepted on the first coarse filter screen can jump out of the low baffles on two sides and automatically return to the culture pond due to jumping. The advantages are as follows:
(1) the device provided by the invention overcomes the defect that the drain outlet at the bottom of the shrimp culture pond is easily blocked by the escape-proof net, the escape-proof net and the sewage disposal and sewage interception device are both arranged on the surface layer, so that the timely sewage disposal is realized, the removal conditions of the shrimp shells, the dead shrimps, the sick shrimps and the residual bait excrement are convenient to observe, meanwhile, the live shrimps can automatically return to the culture water body, and the shrimp shells, the dead shrimps and the sick shrimps with poor vitality are also convenient to manually remove;
(2) the two filter screens are movable, the filter screens with different specifications can be conveniently replaced in different culture stages, the second filter screen can concentrate residual bait and excrement and automatically discharge the residual bait and excrement, and automatic back washing of the second fine filter screen can be realized while pollution discharge is realized;
(3) the water consumption for sewage discharge is low. The second filter screen can concentrate residual bait and excrement, so that the sewage discharge and water consumption in the culture can be greatly reduced;
in conclusion, the continuous concentration and pollution discharge device and method for the shrimp culture system are suitable for culture ponds in various shapes in the existing shrimp culture system, and particularly solve the problem that shrimp shells, dead shrimps and dirt are difficult to discharge in high-density industrial culture. The invention can timely, efficiently and continuously discharge sewage, effectively prevent live shrimps from escaping and automatically separate shrimp shells, dead shrimps and live shrimps.
Drawings
FIG. 1 is a schematic sectional view of a continuous concentration and drainage device of a shrimp culture system according to the present invention;
FIG. 2 is a top view of the dirt storage bin of the present invention;
fig. 3 is a working principle diagram of the continuous concentration and sewage discharge device of the shrimp culture system.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Detailed description of the preferred embodiment
A shrimp culture system continuous concentration and pollution discharge device is shown in figure 1, figure 2 and figure 3, and comprises a sewage collecting pipe 1, an air lifting pipe 2, a sewage storage bin 3 and a pollution discharge pipe 4, wherein the sewage collecting pipe 1 is tightly attached to the bottom of a culture pond 5, the open end of the sewage collecting pipe 1 is positioned at the center of the bottom of the culture pond 5, the other end of the sewage collecting pipe is communicated with the air lifting pipe 2, the upper side wall of the air lifting pipe 2 is positioned at the water surface and is communicated with the sewage storage bin 3 through a sewage suction pipe 6, the sewage storage bin 3 is formed by a bottom plate 7 which is obliquely and downwards arranged, side baffles 8 which are symmetrically arranged at two sides of the bottom plate 7, a detachable coarse filter screen 9 for intercepting large-size particles and a detachable fine filter screen 10 for intercepting small-size particles, the coarse filter screen 9 is horizontally arranged between the two side baffles 8, the horizontal position is slightly lower than the top of the side baffles 8, the fine filter screen 10 is obliquely or vertically arranged between the two side baffles 8, one end of the coarse filter screen, the bottom of the fine filter screen 10 is connected with the bottom of the bottom plate 7, the top of the bottom plate 7 is connected with the bottom of the sewage suction pipe 6, the lowest part of the bottom plate 7 is communicated with the sewage discharge pipe 4 in a butt joint mode, a positive baffle 11 is vertically arranged at the connecting part of the coarse filter screen 9 and the fine filter screen 10, and a large-size particle intercepting area is defined between the positive baffle 11 and the two side baffles 8.
In this embodiment, the pipe wall of the sewage collecting pipe 1 and the bottom side of the culture pond 5 are provided with a plurality of sewage sucking holes 12, and the opening at the bottom of the sewage collecting pipe 1 is provided with a diameter-reducing direct 13 for reducing the pipe diameter at the opening. The open-top of air-lift pipe 2 stretches out the surface of water of breeding pond 5, is provided with at least one nanometer aeration pipe 14 in the air-lift pipe 2, and nanometer aeration pipe 14 passes through compressed air pipe 15 and is connected with outside oxygen-increasing machine.
In this embodiment, a perforated water distribution plate 16 for reducing hydraulic impact is vertically arranged in the lower part of the front one third of the coarse strainer 9 in the sewage storage bin 3. The coarse strainer 9 is a plastic strainer with the mesh number of 10-80 meshes, and the top of the side baffle 8 is 1-2cm higher than the horizontal height of the coarse strainer 9. The fine filter screen 10 is a W-shaped filter bag made of flexible material with 150-300 meshes. The blow-off pipe 4 is connected with a vacuum pipe 18 through a water stopper 17, the vacuum pipe 18 is connected with an external vacuum pump, and the blow-off pipe 4 is provided with an electromagnetic valve 19. The coarse filter screen 9 and the fine filter screen 10 are respectively fixed in the side baffle 8 in a clamping and embedding way.
Detailed description of the invention
The method for continuously concentrating and discharging the sewage of the shrimp culture system by using the device in the first embodiment comprises the following steps:
(1) when feeding, closing the air intake of the air, and stopping water lifting and dirt collection;
(2) after bait is thrown for 1.0-1.5h, the prawn finishes feeding, and the air is lifted and air is introduced to begin water lifting and dirt collection; after the air stripping works for 1 hour, closing the vacuum pipe 18 paths, starting siphon to automatically discharge sewage, performing back flushing on the fine filter screen 10, discharging sewage for 2-3 minutes, closing the vacuum pipe 18 paths, opening the electromagnetic valve 19, destroying siphon, and stopping sewage discharge; simultaneously, gas stripping is started again, and the next working cycle is started;
(3) the coarse strainer 9 is inspected once a day, and shrimp shells, dead shrimps and ill shrimps with poor vitality which are trapped on the coarse strainer 9 are manually removed.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Those skilled in the art should also realize that changes, modifications, additions and substitutions can be made without departing from the true spirit and scope of the invention.
Claims (10)
1. The utility model provides a continuous concentrated waste fitting discharging of shrimp culture system which characterized in that: comprises a sewage collecting pipe, an air lifting pipe, a sewage storage bin and a sewage discharge pipe, wherein the sewage collecting pipe is tightly attached to the bottom of a culture pond for placing, the open end of the sewage collecting pipe is positioned at the center of the bottom of the culture pond and the other end of the sewage collecting pipe is communicated with the air lifting pipe, the upper side wall of the air lifting pipe is positioned at the water surface and is communicated with the sewage storage bin through a sewage suction pipe, the sewage storage bin is formed by downwards inclined bottom plates and symmetrically arranged side baffles arranged at two sides of the bottom plate, a detachable coarse strainer used for intercepting large-size particles and a detachable fine strainer used for intercepting small-size particles, the coarse strainer is horizontally arranged between the two side baffles and is slightly lower than the top of the side baffles, the fine strainer is inclined or vertically arranged between the two side baffles, one end of the coarse strainer is connected with the bottom of the sewage suction pipe and the other end of the coarse strainer is connected with the top of the fine strainer, the bottom of thin filter screen with the bottom of bottom plate meet, the top of bottom plate with the bottom of soil pick-up pipe meet, the bottom plate the lowest with blow off pipe butt joint intercommunication, the coarse strainer with the department of meeting of thin filter screen vertically be provided with positive baffle, positive baffle and two the side shield between enclose into jumbo size particulate matter entrapment area.
2. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the pipe wall of collection dirty pipe on and be close to breed bottom of the pool side open and be equipped with a plurality of soil pick-up hole, the bottom opening part of collection dirty pipe be provided with the reducing that is used for reducing the opening part pipe diameter directly.
3. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the open-top of air-lift pipe stretch out the surface of water of breeding the pond, air-lift intraductal being provided with an at least nanometer aeration pipe, nanometer aeration pipe be connected with outside oxygen-increasing machine through compressed air pipe.
4. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the sewage storage bin is internally provided with a perforated water distribution plate which is used for reducing hydraulic impact and is vertically arranged at the lower part of one third of the front end of the coarse filter screen.
5. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the coarse filter screen is a plastic filter screen with the mesh number of 10-80 meshes, and the top of the side baffle is higher than the horizontal position of the coarse filter screen by 1-2 cm.
6. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the fine filter screen is a W-shaped filter bag type filter made of flexible materials with the mesh number of 150-300.
7. The filtered water is directly returned to the aquaculture water body.
8. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the sewage draining pipe is connected with a vacuum pipe through a water blocking device, the vacuum pipe is connected with an external vacuum pump, and an electromagnetic valve is arranged on the sewage draining pipe.
9. The continuous concentration and drainage device of the shrimp culture system according to claim 1, characterized in that: the coarse filter screen and the fine filter screen are respectively fixed in the side baffle in a clamping and embedding manner.
10. A method of using the apparatus of any one of claims 1 to 8 and performing a continuous concentrated blowdown of a shrimp farming system, comprising the steps of:
(1) when feeding, closing the air intake of the air, and stopping water lifting and dirt collection;
(2) after bait is thrown for 1.0-1.5h, the prawn finishes feeding, and the air is lifted and air is introduced to begin water lifting and dirt collection; after the air stripping works for 1 hour, closing the air stripping, opening a vacuum pipeline to form siphon and start automatic sewage discharge, performing back flushing on the fine filter screen, after 2-3 minutes of sewage discharge, closing the vacuum pipeline, opening an electromagnetic valve, destroying the siphon, and stopping the sewage discharge; simultaneously, gas stripping is started again, and the next working cycle is started;
(3) the coarse strainer is inspected once every day, and shrimp shells, dead shrimps and ill shrimps with poor vitality which are trapped on the coarse strainer are manually removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450004.1A CN112715471A (en) | 2020-12-11 | 2020-12-11 | Continuous concentration and pollution discharge device and method for shrimp culture system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450004.1A CN112715471A (en) | 2020-12-11 | 2020-12-11 | Continuous concentration and pollution discharge device and method for shrimp culture system |
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| Publication Number | Publication Date |
|---|---|
| CN112715471A true CN112715471A (en) | 2021-04-30 |
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