CN111204928A - Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method - Google Patents
Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 241000238553 Litopenaeus vannamei Species 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims abstract description 46
- 238000009360 aquaculture Methods 0.000 claims abstract description 38
- 244000144974 aquaculture Species 0.000 claims abstract description 38
- 239000013618 particulate matter Substances 0.000 claims abstract description 29
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 28
- 239000002351 wastewater Substances 0.000 claims abstract description 6
- 239000013535 sea water Substances 0.000 claims abstract description 4
- 239000002910 solid waste Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 20
- 239000010865 sewage Substances 0.000 claims description 5
- 230000003134 recirculating effect Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims 1
- 206010011409 Cross infection Diseases 0.000 abstract description 4
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 4
- 238000004062 sedimentation Methods 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
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- 230000001954 sterilising effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
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- 229910002651 NO3 Inorganic materials 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000000593 degrading effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
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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
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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Abstract
The invention relates to a circulating water aquaculture system for single pond aquaculture of penaeus vannamei boone and an operation method thereof, belonging to the field of aquatic facilities, and comprising an aquaculture unit and a water treatment unit, wherein the water treatment unit comprises a particulate matter precipitation removal unit, a biological treatment unit and an ultraviolet disinfection unit; the water treatment unit is arranged underground at the periphery of the culture unit, the upper edge of the water treatment unit is parallel and level to the ground, a grid which can be freely taken and placed is paved on the water treatment unit, the culture wastewater in the culture unit is discharged and then sequentially enters the particulate matter precipitation removal unit, the biological treatment unit and the ultraviolet disinfection unit, and the seawater after ultraviolet disinfection is pumped into the culture unit again. The invention takes a single culture pond as a system unit, and independently carries out water circulation and water treatment, thereby avoiding the problem of cross infection among different culture ponds; and the water circulation and water treatment system is arranged underground at the periphery of the culture pond, so that the culture space is saved, and convenience is provided for operations such as feeding, observation and the like of single-pond culture.
Description
Technical Field
The invention belongs to the field of aquatic product facilities, and particularly relates to a circulating water culture system for single-pond culture of penaeus vannamei boone and an operation method.
Background
At present, with the development of aquaculture technology, closed circulating water aquaculture becomes the sunward industry of aquaculture, has the advantages of water conservation, land conservation, environmental protection, strong controllability, high density, safe aquatic product quality and the like, and is considered to be one of the leading directions of the development of the aquaculture industry in the 21 st century. However, in a recirculating aquaculture system, the aquaculture density is generally very high, so that a large amount of solid waste is generated and is a main source of aquaculture water pollution, and timely removal of a large amount of excrement and residual bait (removed from the source) is the key for reducing organic matters and ammonia nitrogen in water. At present, equipment for removing solid wastes in recirculating aquaculture comprises a foam separator, a solid-liquid separator, a micro-filter and the like, and a lot of excrement and residual baits are easily decomposed into smaller particles or ammonia nitrogen in the movement of a pipeline and the impact of the rotary filtration of the micro-filter during treatment; if the solid wastes enter a circulating water system, the subsequent water treatment load is increased. And the cultivation cost is increased invisibly by adding equipment and facilities, and the cultivation space is occupied.
At present, a plurality of culture ponds commonly use one water treatment system in closed circulating water culture, but the system has the risk of pathogen cross infection, and particularly, in the culture and culture of aquatic animal parents, some diseases are horizontally transmitted. The conventional closed circulating water culture technology still has the problems of high cost and easy cross infection, and becomes one of limiting factors for the development of the industry, so that the solution of the problems in the current circulating water culture process becomes an urgent social demand and market demand.
Disclosure of Invention
The invention aims to solve the technical problem of providing a circulating water culture system for single-pond culture of penaeus vannamei boone, wherein a single culture pond is taken as a system unit, water circulation and water treatment are independently carried out, and the problem of cross infection among different culture ponds is avoided; and the water circulation and water treatment system is arranged underground at the periphery of the culture pond and is used as a part of a passage of a workshop and a water intake and drainage using area, so that the culture space is saved, and convenience is provided for operations such as feeding, observation and the like of single-pond culture.
The invention is realized by the following technical scheme:
a circulating water culture system for single-pond culture of penaeus vannamei boone comprises a culture unit and a water treatment unit, wherein the water treatment unit comprises a particulate matter precipitation removal unit, a biological treatment unit and an ultraviolet disinfection unit; the water treatment unit is arranged underground at the periphery of the culture unit, the upper edge of the water treatment unit is parallel and level to the ground, a grid which can be freely taken and placed is paved on the water treatment unit, the culture wastewater in the culture unit is discharged and then sequentially enters the particulate matter precipitation removal unit, the biological treatment unit and the ultraviolet disinfection unit, and the seawater after ultraviolet disinfection is pumped into the culture unit again.
Furthermore, the culture unit comprises a culture pond, a water inlet pipe and a water level control device, the water level control device is positioned in the particulate matter precipitation removal unit, the water level control device comprises an inner sleeve, an outer sleeve, a three-way pipe and a horizontal straight pipe, the three-way pipe is T-shaped, one end of the horizontal straight pipe is communicated with a drain outlet at the bottom of the culture pond, the other end of the horizontal straight pipe is connected with the horizontal end of the three-way pipe, the outer sleeve is connected with the vertical upper end of the three-way pipe, the vertical lower end of the three-way pipe is of a semi-closed structure, a circular hole is formed in the center of the vertical lower end, the edge, the water level in the culture unit can be adjusted by setting the height of the outer sleeve, when the solid waste in the culture unit needs to be discharged, the inner cannula is pulled out, and the solid waste in the culture unit is discharged from the bottom of the culture unit and enters a particulate matter precipitation discharge unit.
Further, the particle precipitation removal unit is a conical bottom, and a particle precipitation removal pipe is arranged in the center of the particle precipitation removal unit. And discharging the solid waste in the particulate matter precipitation removal unit by pulling out the particulate matter precipitation removal pipe.
Further, the particulate matter precipitation removal unit is provided with a micro-filter or a sieve bend to remove suspended particles in the aquaculture wastewater.
Furthermore, the water treatment unit is built according to the wall of the culture pond.
Furthermore, the biological treatment unit is internally provided with two water treatment groups, the biological treatment unit comprises a biological treatment tank, a water-stop wall, a biofilm reactor, a first overflow wall and a second overflow wall, the first overflow wall separates the biological treatment unit from the particle sediment removal unit, the second overflow wall separates the biological treatment unit from the ultraviolet disinfection unit, the water-stop wall separates the two water treatment groups, the upper parts of the first overflow wall and the second overflow wall are provided with communicating pipes and valves, the lower end of the water-stop wall is provided with a water passing port, and the biofilm reactor is arranged in each water treatment group.
Further, the plane views of the particle precipitation removal unit and the ultraviolet disinfection unit are both rectangular cultivation ponds with 1/4 removed, wherein two mutually perpendicular radiuses of the cultivation ponds are located on two sides of the rectangle, one radius of the cultivation pond is the width of the rectangle, the plane view of the water treatment group is a square with 1/4 circle removed, and two mutually perpendicular radiuses of the cultivation ponds are located on two sides of the square. The plane view of the whole culture system is a square and an inscribed circle, the inscribed circle is a culture pond, and the square edge is the edge of the water treatment unit.
Furthermore, the aquaculture water treated by the biological treatment unit enters the ultraviolet disinfection unit, is sterilized by ultraviolet rays and is pumped into the aquaculture unit by the water pump.
The invention also provides an operation method of the system, during recirculating aquaculture, aquaculture water of an aquaculture unit enters the three-way pipe and the outer sleeve pipe from the sewage discharge port through the horizontal straight pipe, solid waste is precipitated to the vertical downward end of the three-way pipe under the action of gravity, clear water overflows from the outer sleeve pipe, when the solid waste accumulated in the aquaculture unit or the vertical downward end of the three-way pipe needs to be discharged, the inner sleeve pipe is pulled off, the solid waste is discharged from the vertical downward end of the three-way pipe and enters the particulate matter precipitation removal unit, clear water in the particulate matter precipitation removal unit enters the first water treatment group of the biological treatment unit from the communicating pipe on the first overflow wall, water treated by the biofilm reactor enters the second water treatment group from the water outlet at the lower end of the water-resisting wall, water passing through the second water treatment group enters the ultraviolet disinfection unit through the communicating pipe on the second overflow wall, the disinfected water is pumped into the culture unit.
Compared with the prior art, the invention has the beneficial effects that:
the water treatment units are arranged at the underground parts around the culture units, each culture pond is a culture circulating unit, the water treatment space is saved, the grids are paved on the water treatment units to serve as passageways, and culture workers can carry out culture management operation; meanwhile, each culture pond is an independent circulating culture system, so that the chance of mutual infection of diseases among the culture ponds in the traditional circulating water culture is avoided.
Drawings
FIG. 1 is a top view of the system of the present invention;
FIG. 2 is a cross-sectional view of a particulate precipitation removal unit of the system of the present invention;
FIG. 3 is a cross-sectional view of a three-way pipe.
Note: 1. the device comprises a culture pond, 2, a water inlet pipe, 3, a water level control device, 4, a grid, 5, a horizontal straight pipe, 6, a funnel-shaped sedimentation pond, 7, a particle sedimentation discharge pipe, 81, a first water treatment group, 82, a second water treatment group, 9, a water-stop wall, 10, a first overflow wall, 11, a second overflow wall, 12, an ultraviolet disinfection unit, 13, a communicating pipe, 14, a valve, 15 and the ground.
31. Inner sleeve, 32, outer sleeve, 33, tee, 331, horizontal end, 332, vertical up end, 333, vertical down end, 334, edge.
Detailed Description
The technical solution of the present invention is further explained by the following examples, but the scope of the present invention is not limited in any way by the examples.
Example 1
A circulating water aquaculture system for single pond culture of Penaeus vannamei Boone is shown in figures 1 and 2 and comprises a culture unit and a water treatment unit, wherein the water treatment unit comprises a particulate matter precipitation removal unit, a biological treatment unit and an ultraviolet disinfection unit; the water treatment unit is arranged underground at the periphery of the culture unit, the upper edge of the water treatment unit is parallel and level with the ground 15, a grid 4 which can be freely taken and placed is paved on the water treatment unit, the culture wastewater in the culture unit is discharged and then sequentially enters the particulate matter precipitation removal unit, the biological treatment unit and the ultraviolet disinfection unit, and the seawater after ultraviolet disinfection is pumped into the culture unit again.
As shown in fig. 1 and 2, the culture unit comprises a culture pond 1, a water inlet pipe 2 and a water level control device 3. The culture pond is circular, and the specification is diameter 20m 1.2 m.
The water level control device is arranged in the particle precipitation removal unit and comprises an inner sleeve 31, an outer sleeve 32, a three-way pipe 33 and a horizontal straight pipe 5, the three-way pipe is T-shaped, as shown in figure 3, one end of the horizontal straight pipe 34 is communicated with a sewage outlet at the bottom of the culture pond, the other end is connected with the horizontal end 331 of the three-way pipe, the outer sleeve is connected with the vertical upward end 332 of the three-way pipe, the vertical downward end 333 of the three-way pipe is of a semi-closed structure, the center of the vertical downward end is provided with a circular hole, the edge of the circular hole is inwards protruded to form an edge 334, the inner sleeve 31 is just inserted on the edge 35, by setting the height of the outer casing 32, the water level in the cultivation unit can be adjusted, when solid waste in the vertically downward lower end of the cultivation unit or tee needs to be removed, the inner sleeve 31 is pulled out, and the solid waste is discharged from the bottom of the culture unit or the vertical lower end of the tee pipe and enters a particulate matter precipitation discharge unit.
The particulate matter precipitation removal unit is shown in plan view as a rectangular cut-away 1/4 cultivation pond having a length x width of 10m x 15m, wherein two mutually perpendicular radii of the cultivation pond are located on two sides of the rectangle, and one of the radii is the width of the rectangle. The particulate matter precipitation removal unit is approximately in a right trapezoid in plan view, the lower bottom of the particulate matter precipitation removal unit is tangent to the wall of the culture pond, the length of the particulate matter precipitation removal unit is 15m, the upper bottom of the particulate matter precipitation removal unit is the extension of the radius of the culture pond, the length of the particulate matter precipitation removal unit is 5m, the right-angle side of the particulate matter precipitation removal unit is 10m, and the area of the culture pond is formed by removing 1/4 from a 15.
The particle precipitation removal unit comprises a funnel-shaped sedimentation tank 6 and a particle precipitation removal pipe 7, the particle precipitation removal pipe is inserted at the bottom of the funnel-shaped sedimentation tank, the height of the particle precipitation removal pipe is slightly higher than the top end of the funnel-shaped sedimentation tank, and when solid waste in the particle precipitation removal unit is accumulated to a certain amount and needs to be discharged, the solid waste is discharged from the bottom of the funnel-shaped sedimentation tank by pulling out the particle precipitation removal pipe. Removing suspended particles in the aquaculture water body, and filtering: the common equipment comprises a micro-filter, a curved sieve and the like, and the micro-filter is suitable for the common equipment, so that the effluent quality is good.
Two water treatment groups, namely a first water treatment group 81 and a second water treatment group 82, are arranged in the biological treatment unit, and the plan view of each water treatment group is a square with the side length of 15m and a 1/4 circle removed, wherein two mutually perpendicular radiuses of the culture pond are positioned on two sides of the square. Each biological treatment unit comprises a biological treatment pool, a water-stop wall 9, a biological membrane reactor, a first overflow wall 10 and a second overflow wall 11, wherein the first overflow wall separates the biological treatment unit from the particle sediment removal unit, the second overflow wall separates the biological treatment unit from the ultraviolet disinfection unit 12, the water-stop wall separates two water treatment components, the height of the first overflow wall and the height of the second overflow wall are 0.8m, the upper parts of the first overflow wall and the second overflow wall are provided with a communicating pipe 13 and a valve 14, the height of the water-stop wall is 1m, the lower end of the water-stop wall is provided with a water passing port, and the water passing port is 0.3m to 0.3 m. Each water treatment group is internally provided with a biofilm reactor.
The ultraviolet disinfection pond is a 15m 10m rectangular culture pond with 1/4 circles removed, and one side shared by the rectangle and the biological treatment unit is also a second overflow wall.
The depth of the water treatment units is 1.2m underground.
In the circulating water culture, the culture water of the culture unit enters the three-way pipe and the outer sleeve pipe from the sewage draining outlet through the horizontal straight pipe, wherein the solid waste is precipitated to the vertical downward end of the three-way pipe under the action of gravity, the clear water overflows from the outer sleeve, when solid waste accumulated in the vertical downward end of the culture unit or the three-way pipe needs to be discharged, the inner sleeve is pulled out, the solid waste is discharged from the vertical downward end of the three-way pipe and enters the particulate matter precipitation removal unit, clear water in the particulate matter precipitation removal unit enters the first water treatment group of the biological treatment unit from the communicating pipe on the first overflow wall, water treated by the biofilm reactor enters the second water treatment group from the water passing port at the lower end of the water-stop wall, water passing through the second water treatment group enters the ultraviolet disinfection unit through the communicating pipe on the second overflow wall, and the disinfected water enters the culture unit.
A bioreactor: a common biological treatment tank for installing or placing biological filter materials mainly achieves the purpose of degrading harmful substances such as ammonia nitrogen, nitrite nitrogen and the like in a water body by strengthening the action of microorganisms. The biological filter material can be selected from PVC elastic three-dimensional filler or PVC porous ring, the filling rate is 20-50%, and the quantity is determined according to the basic biological bearing capacity of the circulating water system. The volume ratio of the effective water body of the biological treatment pond to the effective water body of the culture pond is preferably 1:3-1:5, an aeration device is arranged at the bottom of the biological treatment pond, and a small-sized blower is adopted for supplying air.
The water passing through the last water treatment unit enters the ultraviolet disinfection unit, and the water after ultraviolet disinfection finally enters the culture pond of the culture unit. The ultraviolet sterilization adopts a channel device, 3 ultraviolet lamps are uniformly arranged in an ultraviolet sterilization unit, and a lamp tube with the wavelength of 240-. The water body after ultraviolet disinfection is aerated fully and then can enter the culture water body.
And (3) culturing a biological membrane: 15-30 days before the circulating water treatment system is started, the biofilm is promoted to be rapidly formed by artificially and directionally inoculating the last batch of culture tail water or nitrifying bacteria. In the culture process, the temperature, salinity, pH, dissolved oxygen, COD, ammonia nitrogen, nitrite, nitrate and other relevant water quality indexes are monitored on time and controlled within a proper range.
Adjusting the circulation amount: the water circulation frequency of the system is preferably controlled to be 1-2 times per day. Along with the increase of the bait feeding amount, the system load is gradually increased, and the circulation amount needs to be increased according to the index changes of ammonia nitrogen, nitrite, suspended solid particles and the like of the aquaculture water body so as to ensure good water quality.
Claims (9)
1. A circulating water aquaculture system for single pond aquaculture of Penaeus vannamei Boone is characterized in that the system comprises an aquaculture unit and a water treatment unit, wherein the water treatment unit comprises a particulate matter precipitation removal unit, a biological treatment unit and an ultraviolet disinfection unit (12); the water treatment unit is arranged underground at the periphery of the culture unit, the upper edge of the water treatment unit is parallel and level with the ground (15), a grid (4) which can be freely taken and placed is paved on the water treatment unit, culture wastewater in the culture unit is discharged and then sequentially enters the particulate matter precipitation removal unit, the biological treatment unit and the ultraviolet disinfection unit, and seawater after ultraviolet disinfection is pumped into the culture unit again.
2. The circulating water aquaculture system for the single pond aquaculture of the penaeus vannamei boone according to the claim 1, wherein the aquaculture unit comprises an aquaculture pond (1), a water inlet pipe (2) and a water level control device (3), the water level control device is arranged in the particulate matter precipitation removal unit, the water level control device comprises an inner sleeve (31), an outer sleeve (32), a three-way pipe (33) and a horizontal straight pipe (5), the three-way pipe is T-shaped, one end of the horizontal straight pipe is communicated with a sewage outlet at the bottom of the aquaculture pond, the other end of the horizontal straight pipe is connected with a horizontal end (331) of the three-way pipe, the outer sleeve is connected with a vertical upper end (332) of the three-way pipe, a vertical lower end (333) of the three-way pipe is of a semi-closed structure, a circular hole is formed in the center of the vertical lower end, an edge (334) of the, when the solid waste in the culture unit needs to be removed, the inner sleeve is pulled out, and the solid waste in the culture unit is removed from the bottom of the culture unit and enters the particulate matter precipitation removal unit.
3. The circulating aquaculture system for the single-pond aquaculture of penaeus vannamei boone according to the claim 1, wherein the particulate precipitation removal unit is a funnel-shaped bottom, and a particulate precipitation removal pipe (7) is arranged in the center of the particulate precipitation removal unit.
4. The system of claim 1, wherein the particulate matter precipitation removal unit is provided with a micro-filter or a sieve bend to remove suspended particles in the aquaculture wastewater.
5. The system of claim 1, wherein the water treatment units are built according to the walls of the culture pond.
6. The circulating aquaculture system of claim 1, wherein the biological treatment unit comprises two water treatment groups, each water treatment group comprises a biological treatment tank, a water-separating wall (9), a biofilm reactor, a first overflow wall (10) and a second overflow wall (11), the first overflow wall separates the biological treatment unit from the particle precipitate removal unit, the second overflow wall separates the biological treatment unit from the ultraviolet disinfection unit, the water-separating wall separates the two water treatment groups, the upper parts of the first overflow wall and the second overflow wall are provided with communicating pipes (13) and valves (14), the lower ends of the water-separating walls are provided with water outlets, and each water treatment group is provided with the biofilm reactor.
7. The circulating aquaculture system for single-pond culture of Penaeus vannamei Boone according to claim 6, wherein the biological treatment unit is provided with two water treatment groups.
8. The system of claim 7, wherein the particulate matter precipitation removal unit and the ultraviolet disinfection unit are each rectangular in a plan view with 1/4 removed, wherein two mutually perpendicular radii of the culture pond are located on two sides of the rectangle, and one of the radii is the width of the rectangle; the plan view of the water treatment group is a square with 1/4 circles cut away, wherein two mutually perpendicular radii of the culture pond are located on two sides of the square.
9. The method of operating the system of claim 8, wherein in the recirculating aquaculture, the aquaculture water in the aquaculture unit is fed into the tee pipe and the outer casing from the sewage outlet through the straight horizontal pipe, wherein the solid waste is deposited at the vertically downward end of the tee pipe under the action of gravity, the clear water overflows from the outer casing, when the solid waste accumulated in the aquaculture unit or the vertically downward end of the tee pipe needs to be discharged, the inner casing is pulled off, the solid waste is discharged from the vertically downward end of the tee pipe and fed into the particulate precipitation removal unit, the clear water in the particulate precipitation removal unit is fed into the first water treatment group (81) of the biological treatment unit from the communicating pipe on the first overflow wall, the water treated by the biofilm reactor is fed into the second water treatment group (82) from the water outlet at the lower end of the water-stop wall, and the water passing through the second water treatment group is fed into the ultraviolet disinfection unit from the communicating pipe on the second, the disinfected water is pumped into the culture unit.
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| CN202010054742.8A CN111204928A (en) | 2020-01-17 | 2020-01-17 | Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method |
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| CN202010054742.8A CN111204928A (en) | 2020-01-17 | 2020-01-17 | Circulating water culture system for single-pond culture of penaeus vannamei boone and operation method |
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