CN110342645A - A kind of multistage pool joint control wet land water quality strengthened purification system - Google Patents
A kind of multistage pool joint control wet land water quality strengthened purification system Download PDFInfo
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- CN110342645A CN110342645A CN201910764263.2A CN201910764263A CN110342645A CN 110342645 A CN110342645 A CN 110342645A CN 201910764263 A CN201910764263 A CN 201910764263A CN 110342645 A CN110342645 A CN 110342645A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000000746 purification Methods 0.000 title claims abstract description 50
- 241000196324 Embryophyta Species 0.000 claims abstract description 45
- 238000005273 aeration Methods 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims abstract description 27
- 238000005276 aerator Methods 0.000 claims abstract description 25
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 14
- 235000015225 Panicum colonum Nutrition 0.000 claims description 2
- 230000009189 diving Effects 0.000 claims description 2
- 244000058871 Echinochloa crus-galli Species 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- 239000011574 phosphorus Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000236458 Panicum colonum Species 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- 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
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
A kind of multistage pool joint control wet land water quality strengthened purification system, it include: the pretreatment pool, facultative lagoon, efficient wetland purification system, ecological pond, Aquatic-plant Pond, separation levee and bionic aquatic weed, the pretreatment pool is connect by separation levee with facultative lagoon, facultative lagoon is connect by separation levee with efficient wetland purification system, efficient wetland purification system is connect by separation levee with ecological pond, ecological pond is connect by separation levee with Aquatic-plant Pond, is connect inside bionic aquatic weed and the pretreatment pool, facultative lagoon and efficient wetland purification system.Wherein, efficient wetland purification system includes: the first aeration aerobic ponds, the second aeration aerobic ponds, the first centrifugal submersible aerator, the second centrifugal submersible aerator, the first submersible type impeller and the second submersible type impeller.The present invention strengthens the Nitrogen/Phosphorus Removal of each pool body compared with traditional technology, reduces ingoing river pollutional load, promotes river water quality, constructs perfect wetland aquatic ecosystem.
Description
Technical field
The present invention relates to water treatment fields, and in particular to a kind of multistage pool joint control wet land water quality strengthened purification system.
Background technique
Ingoing river pollutional load is one of the main source of lake pollution load, and ingoing river water quality is promoted and pollution is negative
The reduction of lotus is most important for prevention and treatment lake eutrophication.The mode that ingoing river water quality is promoted mainly includes that water course in situ is net
Change and river dystopy purifies, it is common in current engineering for drawing river water body to enter artificial swamp to carry out river water body promotion purification
River water quality dystopy purification style takes up a large area, current wetland is long since traditional surface current artificial wetland's hydraulic loading is small
Phase operational process is easy to happen blocking, is not suitable for large area arrangement, and under stream entering lake side Wetland Area limited conditions, wet
Ground purifies water, and the time is shorter, and self-purification effect is limited, needs strengthened purification effect etc. on room and time.Therefore, urgently
It is yet-to-be developed go out it is a kind of limited using land area under the conditions of, there are efficient removal water body nitrogen and phosphorus pollutants, reach pair
The multistage pool-wet land system of water quality progress strengthened purification effect.
To solve the above-mentioned problems, we are made that a series of improvement.
Summary of the invention
The object of the present invention is to provide a kind of multistage pool joint control wet land water quality strengthened purification systems, to overcome existing skill
Disadvantages mentioned above present in art and deficiency.
A kind of multistage pool joint control wet land water quality strengthened purification system, comprising: the pretreatment pool, facultative lagoon, efficient wetland purification
System, ecological pond, Aquatic-plant Pond, separation levee and bionic aquatic weed, the pretreatment pool is connect by separation levee with facultative lagoon, described simultaneous
Property the pool connect with efficient wetland purification system by separation levee, the efficient wetland purification system passes through separation levee and connect with ecological pond,
The ecological pond is connect by separation levee with Aquatic-plant Pond, and the bionic aquatic weed and the pretreatment pool, facultative lagoon and efficient wetland are net
Change internal system connection；
Wherein, the efficient wetland purification system includes: the first aeration aerobic ponds, the second aeration aerobic ponds, the first centrifugation
Formula submersible aerator, the second centrifugal submersible aerator, the first submersible type impeller and the second submersible type impeller, described first
Aeration aerobic ponds one end is connect by separation levee with facultative lagoon, and the first aeration aerobic ponds other end passes through separation levee and the second aeration
The connection of aerobic ponds one end, the second aeration aerobic ponds other end are connect with ecological pond, the first centrifugal submersible aerator
It is connect with inside the first submersible type impeller and the first aeration aerobic ponds, the second centrifugal submersible aerator and the second diving
It is connect inside formula impeller and the second aeration aerobic ponds.
Further, the centrifugal submersible aerator of third and third submersible type impeller are equipped with inside the facultative lagoon.
Further, the ecological pond includes: the 4th submersible type impeller, fishing net, the first submerged plant and ecological floating island, institute
It states the 4th submersible type impeller to connect with bottom in ecological pond, two sides and intermediate connection in the fishing net and ecological pond, described the
One submerged plant connect with bottom in ecological pond, and the ecological floating island is set to top in ecological pond, and the ecological floating island is inserted link
Formula fixed structure.
Further, the Aquatic-plant Pond includes: the 5th submersible type impeller, the second submerged plant and emergent aquactic plant, institute
It states the 5th submersible type impeller and the second submerged plant connects with bottom in Aquatic-plant Pond, the emergent aquactic plant and water plant
The connection of pool inner sidewall.
Further, the arrangement volume of the bionic aquatic weed is no more than the 40% of corresponding pool body volume.
Further, the depth of water 3~4m, the hydraulic detention time >=0.05d on the pretreatment pool on the pretreatment pool.
Further, 1.5~3m of the depth of water of the facultative lagoon, hydraulic detention time >=0.3d of the facultative lagoon.
Further, 3~5m of the depth of water of the first aeration aerobic ponds, the hydraulic detention time of the first aeration aerobic ponds
>=0.8d, the depth of water 3~5m, hydraulic detention time >=0.3d of the second aeration aerobic ponds of the second aeration aerobic ponds.
Further, 0.3~2.5m of the depth of water of the ecological pond, hydraulic detention time >=0.4d of the ecological pond.
Further, 0.3~2m of the depth of water of the Aquatic-plant Pond, the hydraulic detention time of the Aquatic-plant Pond >=
0.4d。
Beneficial effects of the present invention:
The present invention is compared with traditional technology, by adding efficient wetland purification system, can lacked according to carbon source, denitrogenation demand
Oxygen and aerobic environment switching, while aerator, flow pulling equipment, bionic aquatic weed, ecological floating island etc. are laid by force in main pool body
Change control techniques, and carry out hydrophyte restoration and aquatile regulation, strengthen the Nitrogen/Phosphorus Removal of each pool body, reduce into
River pollution load in lake promotes river water quality, constructs perfect wetland aquatic ecosystem.
Detailed description of the invention:
Fig. 1 is left end structural schematic diagram of the invention.
Fig. 2 is right end structural schematic diagram of the invention.
Appended drawing reference:
Pre-process the pool 100, facultative lagoon 200, the centrifugal submersible aerator 210 of third and third submersible type impeller 220.
It is centrifugal latent that efficient wetland purification system 300, first is aerated the aeration of aerobic ponds 310, second aerobic ponds 320, first
Water aerator 330, the second centrifugal submersible aerator 340, the first submersible type impeller 360 and the second submersible type impeller 370.
Ecological pond 400, the 4th submersible type impeller 410, fishing net 420, the first submerged plant 430 and ecological floating island 440.
Aquatic-plant Pond 500, the 5th submersible type impeller 510, the second submerged plant 520, emergent aquactic plant 530, separation levee 600
With bionic aquatic weed 700.
Specific embodiment
Below in conjunction with specific embodiment, progress explanation is made to the present invention.It should be understood that following embodiment is merely to illustrate this hair
It is bright not for limiting the scope of the invention.
Embodiment 1
Fig. 1 is the structural diagram of the present invention.
As shown in Figure 1, a kind of multistage pool joint control wet land water quality strengthened purification system, comprising: the pretreatment pool 100, facultative lagoon
200, efficient wetland purification system 300, ecological pond 400, Aquatic-plant Pond 500, separation levee 600 and bionic aquatic weed 700 pre-process the pool
100 are connect by separation levee 600 with facultative lagoon 200, and facultative lagoon 200 is connect by separation levee 600 with efficient wetland purification system 300,
Efficient wetland purification system 300 is connect by separation levee 600 with ecological pond 400, and ecological pond 400 passes through separation levee 600 and water plant
The pool 500 connects, and bionic aquatic weed 700 connects inside wetland purification system 300 with the pretreatment pool 100, facultative lagoon 200 and efficiently；
Wherein, efficient wetland purification system 300 includes: the first aeration aerobic ponds 310, second aeration aerobic ponds 320, first
Centrifugal submersible aerator 330, the second centrifugal submersible aerator 340, the first submersible type impeller 360 and the second submersible type push away
Device 370 is flowed, first aeration 310 one end of aerobic ponds is connect by separation levee 600 with facultative lagoon 200, and the first aeration aerobic ponds 310 are another
End is connect by separation levee 600 with second aeration 320 one end of aerobic ponds, and second aeration 320 other end of aerobic ponds and ecological pond 400 connect
It connects, is connected inside the first centrifugal submersible aerator 330 and the first submersible type impeller 360 and the first aeration aerobic ponds 310, the
It is connected inside two centrifugal submersible aerators 340 and the second submersible type impeller 370 and the second aeration aerobic ponds 320.
The centrifugal submersible aerator 210 of third and third submersible type impeller 220 are equipped with inside facultative lagoon 200.
Ecological pond 400 includes: the 4th submersible type impeller 410, fishing net 420, the first submerged plant 430 and ecological floating island
440, the 4th submersible type impeller 410 is connect with bottom in ecological pond 400, and fishing net 420 connects with two sides in ecological pond 400 and centre
It connects, the first submerged plant 430 connect with bottom in ecological pond 400, and ecological floating island 440 is set to top in ecological pond 400, and ecology is floating
Island 440 is inserted-link type fixed structure.
Aquatic-plant Pond 500 includes: the 5th submersible type impeller 510, the second submerged plant 520 and emergent aquactic plant 530, and
Five submersible type impellers 510 are connected with the second submerged plant 520 with bottom in Aquatic-plant Pond 500, emergent aquactic plant 530 with it is aquatic
The connection of 500 inner sidewall of Plant Pond.
The arrangement volume of bionic aquatic weed 700 is no more than the 40% of corresponding pool body volume.
3~the 4m of the depth of water on the pool 100 is pre-processed, the hydraulic detention time >=0.05d on the pool 100 is pre-processed, it is bionical by arranging
Water plant strengthened purification measure removes silt and suspension organic particulate matter, while grid is arranged in wetland water inlet, intercepts upper water
Floating refuse and suspended matter；
1.5~3m of the depth of water of facultative lagoon 200, hydraulic detention time >=0.3d of facultative lagoon 200, by arranging bionical water
Grass, aerator, water plant remove soluble organic pollutant, connect with postposition aeration aerobic ponds, promote nitrogen and phosphorous nutrient
Removal；
The depth of water 3~the 5m, hydraulic detention time >=0.8d of the first aeration aerobic ponds 310, the of first aeration aerobic ponds 310
3~5m of the depth of water of two aeration aerobic ponds 320, second is aerated hydraulic detention time >=0.3d of aerobic ponds 320, bionical by arranging
Water plant, aerator, water plant are aerated the microbial activity for improving biofilm in the body of the pool using series connection, improve the removal of ammonia nitrogen
Ability, and aeration quantity is adjusted according to carbon source content in water body in due course, Denitrification Conditions are provided, the removal of total nitrogen in water body is improved；
0.3~2.5m of the depth of water of ecological pond 400, hydraulic detention time >=0.4d of ecological pond 400, it is floating by arrangement ecology
Material transport, conversion and the transmitting step by step of energy, the conversion of a plurality of food chain such as island, water plant, aquatic animal, in the pool
Pollutant is degraded and is converted；
0.3~2m of the depth of water of Aquatic-plant Pond 500, hydraulic detention time >=0.4d of Aquatic-plant Pond 500, passes through arrangement
Water plant eliminates bacterium algae in water, improves water body and goes out water clarity.
The working principle of the invention is to enter river side by river intake gate in river water body and multistage pool joint control is arranged
Wet land water quality strengthened purification system, multistage pool joint control wet land water quality strengthened purification system is by the pretreatment pool 100, facultative lagoon 200, the
One aeration aerobic ponds 310, second are aerated the plural serial stage composition of aerobic ponds 320, ecological pond 400 and Aquatic-plant Pond 500, wherein
First aeration aerobic ponds 310 and the second aeration aerobic ponds 320 switch according to carbon source, denitrogenation demand in anoxic and aerobic environment, shape
At efficient wetland purification system 300, aerator, flow pulling equipment, bionic aquatic weed 700, ecological floating island are laid in main pool body
440 equal strengthened purifications measures, and hydrophyte restoration and aquatile regulation are carried out, strengthen the Nitrogen/Phosphorus Removal of each pool body.
The present invention can be switched according to carbon source, denitrogenation demand in anoxic and aerobic environment by adding efficient wetland purification system, while
The strengthened purifications measures such as aerator, flow pulling equipment, bionic aquatic weed, ecological floating island are laid in the body of the main pool, and carry out aquatic plant
Object restores and aquatile regulation, strengthens the Nitrogen/Phosphorus Removal of each pool body, reduces ingoing river pollutional load, promotes river
Water quality constructs perfect wetland aquatic ecosystem.
A specific embodiment of the invention is illustrated above, but the present invention is not limited thereto, without departing from
Spirit of the invention, the present invention can also have various change.
Claims (10)
1. a kind of multistage pool joint control wet land water quality strengthened purification system characterized by comprising the pretreatment pool (100), facultative lagoon
(200), efficient wetland purification system (300), ecological pond (400), Aquatic-plant Pond (500), separation levee (600) and bionic aquatic weed
(700), the pretreatment pool (100) is connect by separation levee (600) with facultative lagoon (200), and the facultative lagoon (200) passes through separation levee
(600) it is connect with efficient wetland purification system (300), the efficient wetland purification system (300) passes through separation levee (600) and ecology
The pool (400) connection, the ecological pond (400) are connect by separation levee (600) with Aquatic-plant Pond (500), the bionic aquatic weed
(700) it is connect with inside the pretreatment pool (100), facultative lagoon (200) and efficient wetland purification system (300)；
Wherein, the efficient wetland purification system (300) includes: the first aeration aerobic ponds (310), the second aeration aerobic ponds
(320), the first centrifugal submersible aerator (330), the second centrifugal submersible aerator (340), the first submersible type impeller
(360) and the second submersible type impeller (370), first aeration aerobic ponds (310) one end pass through separation levee (600) and facultative lagoon
(200) it connects, first aeration aerobic ponds (310) other end passes through separation levee (600) and second aeration aerobic ponds (320) one end
Connection, the second aeration aerobic ponds (320) other end are connect with ecological pond (400), the first centrifugal submersible aerator
(330) and inside the first submersible type impeller (360) and the first aeration aerobic ponds (310) it connect, the second centrifugal diving
It is connect inside aerator (340) and the second submersible type impeller (370) and the second aeration aerobic ponds (320).
2. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described simultaneous
Property the pool (200) inside be equipped with the centrifugal submersible aerator of third (210) and third submersible type impeller (220).
3. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that the life
The state pool (400) includes: the 4th submersible type impeller (410), fishing net (420), the first submerged plant (430) and ecological floating island
(440), the 4th submersible type impeller (410) connect with ecological pond (400) interior bottom, the fishing net (420) and ecological pond
(400) interior two sides and intermediate connection, first submerged plant (430) connect with ecological pond (400) interior bottom, and the ecology is floating
Island (440) is set to top in ecological pond (400), and the ecological floating island (440) is inserted-link type fixed structure.
4. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that the water
The plant pool (500) includes: the 5th submersible type impeller (510), the second submerged plant (520) and emergent aquactic plant (530), described
5th submersible type impeller (510) is connected with the second submerged plant (520) with Aquatic-plant Pond (500) interior bottom, the very water
Plant (530) connect with Aquatic-plant Pond (500) inner sidewall.
5. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described imitative
The arrangement volume of unboiled water grass (700) is no more than the 40% of corresponding pool body volume.
6. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described pre-
Handle the depth of water 3~4m, hydraulic detention time >=0.05d of the pretreatment pool (100) of the pool (100).
7. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described simultaneous
1.5~the 3m of the depth of water, hydraulic detention time >=0.3d of the facultative lagoon (200) on the property pool (200).
8. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described the
3~5m of the depth of water of one aeration aerobic ponds (310), described first is aerated the hydraulic detention time >=0.8d of aerobic ponds (310), described
The depth of water 3~the 5m, hydraulic detention time >=0.3d of second aeration aerobic ponds (320) of second aeration aerobic ponds (320).
9. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that the life
The depth of water 0.3~the 2.5m, hydraulic detention time >=0.4d of the ecological pond (400) on the state pool (400).
10. a kind of multistage pool joint control wet land water quality strengthened purification system according to claim 1, which is characterized in that described
The depth of water 0.3~the 2m, hydraulic detention time >=0.4d of the Aquatic-plant Pond (500) of Aquatic-plant Pond (500).
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| CN111777278A (en) * | 2020-07-14 | 2020-10-16 | 中交 (天津) 生态环保设计研究院有限公司 | Deep purification pond chain treatment process for dredging tail water |
| CN113800723A (en) * | 2021-10-19 | 2021-12-17 | 盐城师范学院 | Bionic wetland system |
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