AU2020103871A4 - A self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond - Google Patents

A self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond Download PDF

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Publication number
AU2020103871A4
AU2020103871A4 AU2020103871A AU2020103871A AU2020103871A4 AU 2020103871 A4 AU2020103871 A4 AU 2020103871A4 AU 2020103871 A AU2020103871 A AU 2020103871A AU 2020103871 A AU2020103871 A AU 2020103871A AU 2020103871 A4 AU2020103871 A4 AU 2020103871A4
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Australia
Prior art keywords
water
pond
crab
area
pool
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Ceased
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AU2020103871A
Inventor
Leilei Chen
Zhou DU
Qingsong HU
Jun Li
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Shanghai Ocean University
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Shanghai Ocean University
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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04Arrangements for treating water specially adapted to receptacles for live fish
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00Aeration of stretches of water
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/045Filters for aquaria
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007Contaminated open waterways, rivers, lakes or ponds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention discloses a self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond, which comprises a river crab culture area and a water purification area. The water purification area comprises a filtration pool, a sterilization pool and a cooling pool. A separation wall is arranged at the junction of the outlet end of the cooling pool and the culture area; The separation wall is provided with an air stripping device which comprises a compressor, an air inlet pipe and a water outlet pipe, and the air stripping device is used for mixing the water treated by the water purification area with air and conveying the mixed air to the crab culture area. According to the invention, the water in the river crab culture area is discharged into the water purification area, and the purified water is pushed into the river crab culture area by a air stripping device after multi-level purification treatment of filtration, sterilization and temperature reduction, so that the water is recycled and the waste of water resources is reduced. -1/3 5 131 17 i i 12 S Flow N' 2-3 Figure 1. The schematic diagram of a self-cleaning system for crab pond aquaculture with air lift and push water and full pond flow

Description

-1/3
5 131
17
i i
12
S Flow N'
2-3
Figure 1.
The schematic diagram of a self-cleaning system for crab pond aquaculture with air lift and push water and full pond flow
A SELF-PURIFICATION SYSTEM FOR CRAB POND AQUACULTURE WITH AIR STRIPPING AND WATER RETRACING FLOWING AROUND THE WHOLEPOND TECHNICAL FIELD
The invention relates to the field of river crab aquaculture, in particular to a self
purification system for crab pond aquaculture with air stripping and water retracing flowing
around the whole pond.
BACKGROUND
River crab is the most important freshwater crab in China. It has tender meat, with
delicious taste and rich nutrition, and it has high economic value. At present, the culture of
river crabs in ponds mainly uses aquatic plants planted in still water ponds to cultivate river
crabs (i.e., planting grass to raise crabs). This model has achieved certain success by
planting grass and changing water regularly to ensure the habitat and growth environment
of river crabs, but there are also some obvious problems: (1) During the process of changing
water, the waste water discharged causes pollution to the surrounding water bodies, and
the utilization efficiency of water resources is low. (2) Water purification makes the
dissolved oxygen in pond water body unsatisfactory, especially the disclosure of oxygen
content in water body at night. (3) Summer is the peak season of crab culture, which is the
key stage of crab growth. However, the high temperature in summer makes the water body
temperature of culture pond high, which threatens the growth and even survival of crab. (4)
There is a significant difference in the living state between the pond still water culture and the river crab in the natural living environment, which hinders the further improvement of the river crab culture quality.
SUMMARY
The purpose of the present invention is to provide a self-purification system for crab
pond aquaculture with air stripping and water retracing flowing around the whole pond,
which can realize the cyclic utilization of water resources, self-purification of water bodies
and river crab culture in flowing water without changing water. In addition, the problems
existing in the cultivation of river crabs in still water ponds are solved, such as the slow
growth of river crabs due to poor dissolved oxygen in pond water and the poor growth
environment of river crabs due to high water temperature in summer.
The technical problem solved by the invention can be realized by adopting the
following technical scheme:
The system comprises a pond (1) which is provided with a river crab culture area (2)
and a water purification area (3).
A drainage plate (18) is arranged between the crab culture area (2) and the water
purification area (3), and water in the crab culture area (2) flows to the water purification
area (3) through the drainage plate (18).
The water purification zone (3) comprises a filter pool (11) communicated with the
river crab culture zone (2), wherein the filter pool (11) is used for removing impurities in
water flowing from the river crab culture zone (2); the outlet of the filter pool (11) is communicated with a sterilization pool (12); a sterilization lamp (14) is arranged in the sterilization pool (12) . The outlet of the sterilization pool (12) is communicated with the cooling pool (13), and the top of the cooling pool (13) is covered with a shading net (15), which is used for avoiding sunlight to reduce the temperature of water. A separation wall
(4) is arranged at the junction of the outlet end of the cooling pool (13) and the river crab
culture area (2).
A stripping device (5) is arranged at the separation wall (4), and the stripping device
(5) comprises a compressor (9), an air inlet pipe (8) and a water outlet pipe (10), wherein
the compressor (9) is installed on the separation wall (4), and a compressed gas outlet of
the compressor (9) is communicated with the air inlet pipe (8). The air inlet pipe (8) extends
to the bottom of the outlet end of the cooling pond (13) and is communicated with the water
outlet pipe (10), the diameter of which is larger than that of the air inlet pipe (8), one end
of the water outlet pipe (10) is communicated with the air inlet pipe (8), and the other end
of the water outlet pipe (10) extends to the crab culture area (2).
Further, a plurality of soft enclosures (17) are arranged in the river crab culture area
(2), and the soft enclosures (17) divide the river crab culture area (2) into folded waterways,
the starting point of which is adjacent to the cooling pool (13) of the water purification area
(3), and the ending point of which is adjacent to the filtration pool (11) of the water
purification area (3).
In addition, the self-purification system for crab pond aquaculture with air stripping
and water retracing flowing around the whole pond according to claim 1, which is
characterized in that a plurality of groups of water outlets (16) distributed up and down are arranged on the drainage plate (18), a chute is arranged on the inner wall of the water outlets
(16), and a movable baffle (19) for switching the opening/closing of the water outlets (16)
is arranged in the chute.
Furthermore, the other end of the water outlet pipe (10) is provided with an anti-reflux
plate (7), one side of which is a crab breeding area (2), the other side of which is a water
purification area (3), and the other side of which is also provided with a guide plate (6).
Further, the outlet end of the cooling pool (13) and the depth of the river crab culture
area (2) have a drop of 80-120cm.
Additional, there are some aquatic plants planted in the water body of the filtration
pool (11), as well as aquatic animals cultured in the water body of the filtration pool (11).
Beneficial effect:
It realizes water recycling and reduces the waste of water resources. The water in the
crab aquaculture area is introduced into the water purification area, and then the purified
water is pushed into the aquaculture pond by the multi-level purification process of
filtration, sterilization, and cooling, and then the purified water is retraced into the
aquaculture pond by the air lifting device. The vertical height difference between the
aquaculture tank and the purification tank is designed to push the deep water in the
purification tank into the aquaculture tank, which maintains the temperature of the
aquaculture tank and increases the amount of dissolved oxygen in the water. Crab
excrement and other impurities are collected for vegetable cultivation, and the remaining
bait can be used for aquatic animal consumption.
BRIEF DESCRIPTION OF THE FIGURES
Fig. 1 is the schematic diagram of a self-cleaning system for crab pond aquaculture
with air lift and push water and full pond flow.
Fig. 2 is the schematic diagram of the air stripping device of the present invention.
Fig. 3 is the schematic diagram of the drainage plate of the present invention.
DESCRIPTION OF THE INVENTION
In order to make it easy to understand the technical means, creative features,
achievement purpose and efficacy of the invention, the invention is further described in
combination with specific implementation methods.
As shown in Fig I to Fig 3, the system comprises a pond (1) which is provided with a
river crab culture area (2) and a water purification area (3).
A drainage plate (18) is arranged between the crab culture area (2) and the water
purification area (3), and water in the crab culture area (2) flows to the water purification
area (3) through the drainage plate (18).
The water purification zone (3) comprises a filter pool (11) communicated with the
river crab culture zone (2), wherein the filter pool (11) is used for removing impurities in
water flowing from the river crab culture zone (2); the outlet of the filter pool (11) is
communicated with a sterilization pool (12); a sterilization lamp (14) is arranged in the
sterilization pool (12) . The outlet of the sterilization pool (12) is communicated with the
cooling pool (13), and the top of the cooling pool (13) is covered with a shading net (15), which is used for avoiding sunlight to reduce the temperature of water. A separation wall
(4) is arranged at the junction of the outlet end of the cooling pool (13) and the river crab
culture area (2).
A stripping device (5) is arranged at the separation wall (4), and the stripping device
(5) comprises a compressor (9), an air inlet pipe (8) and a water outlet pipe (10), wherein
the compressor (9) is installed on the separation wall (4), and a compressed gas outlet of
the compressor (9) is communicated with the air inlet pipe (8). The air inlet pipe (8) extends
to the bottom of the outlet end of the cooling pond (13) and is communicated with the water
outlet pipe (10), the diameter of which is larger than that of the air inlet pipe (8), one end
of the water outlet pipe (10) is communicated with the air inlet pipe (8), and the other end
of the water outlet pipe (10) extends to the crab culture area (2).
Moreover, a plurality of soft enclosures (17) are arranged in the river crab culture area
(2), and the soft enclosures (17) divide the river crab culture area (2) into folded waterways,
the starting point of which is adjacent to the cooling pool (13) of the water purification area
(3), and the ending point of which is adjacent to the filtration pool (11) of the water
purification area (3).
In addition, the self-purification system for crab pond aquaculture with air stripping
and water retracing flowing around the whole pond according to claim 1, which is
characterized in that a plurality of groups of water outlets (16) distributed up and down are
arranged on the drainage plate (18), a chute is arranged on the inner wall of the water outlets
(16), and a movable baffle (19) for switching the opening/closing of the water outlets (16)
is arranged in the chute.
Besides, the other end of the water outlet pipe (10) is provided with an anti-reflux
plate (7), one side of which is a crab breeding area (2), the other side of which is a water
purification area (3), and the other side of which is also provided with a guide plate (6).
The outlet end of the cooling pool (13) and the depth of the river crab culture area (2)
have a drop of 80-120cm. With this structure, the deep water in the water purification area
(3) can be introduced into the river crab culture area (2), which not only maintains the
temperature of the water in the river crab culture area (2), but also increases the dissolved
oxygen in the water.
Also, there are some aquatic plants planted in the water body of the filtration pool
(11), as well as aquatic animals cultured in the water body of the filtration pool (11).
Aquatic plants can absorb suspended matter in the water and purify the water. Aquatic
animals can feed on the excrement of crabs, so as to reduce pollution and realizing
ecological farming.
The above shows and describes the basic principles and main features of the present
invention and the advantages of the present invention. It should be understood by those
skilled in the art that the present invention is not limited by the above embodiments. The
above embodiments and descriptions only illustrate the principles of the present invention.
Without departing from the spirit and scope of the present invention, there will be various
changes and improvements in the present invention, all of which fall within the scope of
the claimed invention. The claim scope of that present invention is defined by the append
claims and their equivalents.

Claims (6)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A self-purification system for crab pond aquaculture with air stripping and water
retracing flowing around the whole pond, which is characterized in that the system
comprises a pond (1) which is provided with a river crab culture area (2) and a water
purification area (3).
A drainage plate (18) is arranged between the crab culture area (2) and the water
purification area (3), and water in the crab culture area (2) flows to the water purification
area (3) through the drainage plate (18).
The water purification zone (3) comprises a filter pool (11) communicated with the
river crab culture zone (2), wherein the filter pool (11) is used for removing impurities in
water flowing from the river crab culture zone (2); the outlet of the filter pool (11) is
communicated with a sterilization pool (12); a sterilization lamp (14) is arranged in the
sterilization pool (12) . The outlet of the sterilization pool (12) is communicated with the
cooling pool (13), and the top of the cooling pool (13) is covered with a shading net (15),
which is used for avoiding sunlight to reduce the temperature of water. A separation wall
(4) is arranged at the junction of the outlet end of the cooling pool (13) and the river crab
culture area (2).
A stripping device (5) is arranged at the separation wall (4), and the stripping device
(5) comprises a compressor (9), an air inlet pipe (8) and a water outlet pipe (10), wherein
the compressor (9) is installed on the separation wall (4), and a compressed gas outlet of
the compressor (9) is communicated with the air inlet pipe (8). The air inlet pipe (8) extends
to the bottom of the outlet end of the cooling pond (13) and is communicated with the water outlet pipe (10), the diameter of which is larger than that of the air inlet pipe (8), one end of the water outlet pipe (10) is communicated with the air inlet pipe (8), and the other end of the water outlet pipe (10) extends to the crab culture area (2).
2. The self-purification system for crab pond aquaculture with air stripping and water
retracing flowing around the whole pond according to claim 1, which is characterized in
that a plurality of soft enclosures (17) are arranged in the river crab culture area (2), and
the soft enclosures (17) divide the river crab culture area (2) into folded waterways, the
starting point of which is adjacent to the cooling pool (13) of the water purification area
(3), and the ending point of which is adjacent to the filtration pool (11) of the water
purification area (3).
3. The self-purification system for crab pond aquaculture with air stripping and water
retracing flowing around the whole pond according to claim 1, which is characterized in
that a plurality of groups of water outlets (16) distributed up and down are arranged on the
drainage plate (18), a chute is arranged on the inner wall of the water outlets (16), and a
movable baffle (19) for switching the opening/closing of the water outlets (16) is arranged
in the chute.
4. The self-purification system for crab pond aquaculture with air stripping and water
retracing flowing around the whole pond according to claim 1, which is characterized in
that the other end of the water outlet pipe (10) is provided with an anti-reflux plate (7), one
side of which is a crab breeding area (2), the other side of which is a water purification area
(3), and the other side of which is also provided with a guide plate (6).
5. The self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond according to claim 1, which is characterized in that the outlet end of the cooling pool (13) and the depth of the river crab culture area (2) have a drop of 80-120cm.
6. The self-purification system for crab pond aquaculture with air stripping and water
retracing flowing around the whole pond according to claim 1, there are some aquatic
plants planted in the water body of the filtration pool (11), as well as aquatic animals
cultured in the water body of the filtration pool (11).
-1/3- 2020103871
Figure 1.
The schematic diagram of a self-cleaning system for crab pond aquaculture with air lift and push water and full pond flow
-2/3- 2020103871
Figure 2.
The schematic diagram of the air stripping device of the present invention
-3/3- 2020103871
Figure 3.
The schematic diagram of the drainage plate of the present invention
AU2020103871A 2020-12-03 2020-12-03 A self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond Ceased AU2020103871A4 (en)

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AU2020103871A AU2020103871A4 (en) 2020-12-03 2020-12-03 A self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2020103871A AU2020103871A4 (en) 2020-12-03 2020-12-03 A self-purification system for crab pond aquaculture with air stripping and water retracing flowing around the whole pond

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AU2020103871A4 true AU2020103871A4 (en) 2021-02-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113100154A (en) * 2021-05-10 2021-07-13 中国水产科学研究院渔业机械仪器研究所 Convenient pond of growing seedlings intercepting device who adjusts
CN114403062A (en) * 2022-01-14 2022-04-29 中国水产科学研究院渔业机械仪器研究所 Double-channel pollution discharge device of sea cucumber culture pond and working method thereof
CN114793994A (en) * 2022-05-13 2022-07-29 湖南文和友乔口小龙虾养殖有限公司 Temporary crayfish breeding system and temporary crayfish breeding method
CN115589972A (en) * 2022-09-07 2023-01-13 南京市水产科学研究所(Cn) Snail river crab relay ecological breeding method based on pond transformation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113100154A (en) * 2021-05-10 2021-07-13 中国水产科学研究院渔业机械仪器研究所 Convenient pond of growing seedlings intercepting device who adjusts
CN113100154B (en) * 2021-05-10 2023-02-10 中国水产科学研究院渔业机械仪器研究所 Convenient pond of growing seedlings intercepting device who adjusts
CN114403062A (en) * 2022-01-14 2022-04-29 中国水产科学研究院渔业机械仪器研究所 Double-channel pollution discharge device of sea cucumber culture pond and working method thereof
CN114403062B (en) * 2022-01-14 2022-11-01 中国水产科学研究院渔业机械仪器研究所 Double-channel sewage draining device of sea cucumber culture pond and working method of double-channel sewage draining device
CN114793994A (en) * 2022-05-13 2022-07-29 湖南文和友乔口小龙虾养殖有限公司 Temporary crayfish breeding system and temporary crayfish breeding method
CN115589972A (en) * 2022-09-07 2023-01-13 南京市水产科学研究所(Cn) Snail river crab relay ecological breeding method based on pond transformation
CN115589972B (en) * 2022-09-07 2023-10-20 南京市水产科学研究所 Snail river crab relay ecological breeding method based on pond transformation

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