CN114620888A - Leading clean system of lake reservoir - Google Patents
Leading clean system of lake reservoir Download PDFInfo
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- CN114620888A CN114620888A CN202210192412.4A CN202210192412A CN114620888A CN 114620888 A CN114620888 A CN 114620888A CN 202210192412 A CN202210192412 A CN 202210192412A CN 114620888 A CN114620888 A CN 114620888A
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- lake
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000000746 purification Methods 0.000 claims abstract description 49
- 238000004062 sedimentation Methods 0.000 claims abstract description 13
- 230000033228 biological regulation Effects 0.000 claims abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 230000006641 stabilisation Effects 0.000 claims abstract description 9
- 238000011105 stabilization Methods 0.000 claims abstract description 9
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 8
- 239000011147 inorganic material Substances 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 241001465754 Metazoa Species 0.000 claims abstract description 4
- 230000004888 barrier function Effects 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims abstract 2
- 241000196324 Embryophyta Species 0.000 claims description 24
- 238000005273 aeration Methods 0.000 claims description 16
- 241000555922 Potamogeton crispus Species 0.000 claims description 14
- 241001123263 Zostera Species 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 235000009499 Vanilla fragrans Nutrition 0.000 claims description 3
- 244000263375 Vanilla tahitensis Species 0.000 claims description 3
- 235000012036 Vanilla tahitensis Nutrition 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 5
- 229940079593 drug Drugs 0.000 abstract description 2
- 239000003814 drug Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001536526 Nuphar pumila Species 0.000 description 1
- 241000209490 Nymphaea Species 0.000 description 1
- 235000016791 Nymphaea odorata subsp odorata Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241000543445 Vallisneria spiralis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- VDKPKGSKAWIEIN-UHFFFAOYSA-L dipotassium;hydrogen arsorate Chemical compound [K+].[K+].O[As]([O-])([O-])=O VDKPKGSKAWIEIN-UHFFFAOYSA-L 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Hydroponics (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to the field of water treatment and purification, in particular to a preposed purification system for a lake reservoir, which avoids using chemical drugs to purify water so as to avoid secondary pollution to the water quality of the reservoir/lake; comprises the following components in mutual communication: an interception pond, a diversion channel, a regulation pond, a sedimentation pond, a plant purification pond and a biological stabilization pond; an intercepting mechanism for intercepting floating objects in the incoming upstream water is arranged in the intercepting pond; one end of the diversion channel is communicated with the interception pond, and the other end of the diversion channel is provided with two water outlets, wherein one water outlet is communicated with the regulation pond, and the other water outlet is directly communicated with a lake/reservoir through a flood discharge channel; a separation part is arranged between the sedimentation pond and the plant purification pond; the barrier portion is made of a porous inorganic material; filter-feeding fishes are cultured in the upper layer and the middle layer of water area in the biological stabilization pond, and benthonic animals are cultured in the bottom layer of water area.
Description
Technical Field
The invention relates to the field of water treatment and purification, in particular to a lake and reservoir front purification system.
Background
When the existing reservoir/lake receives upstream water inflow, a water storage pond is generally dug in front of the reservoir and is uniformly purified in the water storage pond, but when the reservoir/lake encounters a flood discharge period, the hydraulic impact in the water storage pond is large, the pressure is also large, and the overflow phenomenon is easy to occur;
with the technical progress, the reservoir prepositive purification system slowly replaces a water storage pond, the inlet water is purified through the purification effect of various sections, and then the purified inlet water is directly communicated to a reservoir/lake; however, many of the existing pre-reservoir systems are provided with dosing sections to chemically purify the intake water, thereby affecting the water quality of reservoirs/lakes, and the existing pre-reservoir systems do not consider the problem of hydraulic impact during flood discharge, so that the whole purification system is easy to collapse.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a lake and reservoir preposition purification system, which realizes different purification characteristics through different purification sections and shares different purification tasks; in addition, the water body is prevented from being purified by chemical drugs, so that the secondary pollution to the water quality of the reservoir/lake is avoided, and in addition, the diversion channel is arranged at the front end, so that the large hydraulic impact can be effectively coped with, and the whole system is protected.
According to the embodiment of the invention, the front purification system for the lake and reservoir comprises the following components in communication with each other: an interception pond, a diversion channel, a regulation pond, a sedimentation pond, a plant purification pond and a biological stabilization pond;
an intercepting mechanism for intercepting floating objects in the incoming upstream water is arranged in the intercepting pond; one end of the diversion channel is communicated with the interception pond, and the other end of the diversion channel is provided with two water outlets, wherein one water outlet is communicated with the regulation pond, and the other water outlet is directly communicated with a lake/reservoir through a flood discharge channel;
further, a blocking part is arranged between the sedimentation pond and the plant purification pond; the barrier portion is made of a porous inorganic material;
furthermore, filter-feeding fishes are cultured in the upper layer water area and the middle layer water area in the biological stabilization pond, and benthonic animals are cultured in the bottom layer water area.
Furthermore, the interior of the regulation and storage pond is divided into an aeration area and a purification area according to the water inlet direction; an aeration device is arranged in the aeration zone; and floating plants are planted in the upper water area in the purification area.
Further, the plant purification pond comprises a curly pondweed pond and a bitter herb pond, and the curly pondweed and the bitter herb are respectively planted.
Furthermore, the intercepting mechanism plants aquatic plants with roots in clusters, including reed or/and vanilla.
Further, the depth of the sedimentation pond is 2-4 meters; the hydraulic retention time was 24 hours.
Further, the potamogeton crispus pond has a water depth of 1.5 meters; the water depth of the eel grass pond is 0.5 to 1 meter.
Furthermore, the depth of the biological stabilization pond is 1.5-2 meters, and the hydraulic retention time is 36 hours.
Further, the porous inorganic material is volcanic rock.
Further, the flow guide channel comprises: the water distribution channel comprises a water inlet channel and two water distribution channels communicated with the water inlet channel; the water outlets at the tail ends of the two water distribution channels are respectively communicated with the regulation pond and the lake/reservoir; a weir plate is movably arranged in the water diversion channel communicated with the lake/reservoir; a Pasteur groove for calibrating flow scales is arranged in the diversion channel communicated with the storage pond.
Compared with the prior art, the invention has the following beneficial effects:
compared with the existing preposed reservoir system, the lake reservoir preposed purification system provided by the invention uses pure biological and physical purification modes, so that the secondary pollution of water quality is avoided by adding chemicals, different purification sections have different purification characteristics, and different purification tasks are shared; in addition, the diversion channel at the front end can directly select to discharge flood to the lake/reservoir when the water inlet pressure is high, thereby avoiding the breakdown of the whole system.
Drawings
FIG. 1 is a schematic structural diagram of a lake and reservoir advanced purification system provided by the invention;
fig. 2 is a schematic structural diagram of a diversion trench of the lake and reservoir preposition purification system provided by the invention.
In the drawings, wherein:
1. intercepting a pond; 11. an interception mechanism; 2. a diversion channel; 21. a water inlet channel; 22. dividing a water channel; 221. a weir plate; 222. a pasteurization tank; 3. a storage pond; 31. an aeration zone; 311. an aeration device; 32. a purification zone; 321. a floating plant; 4. a settling zone; 41. a blocking section; 5. a plant purification pond; 51. curly pondweed pond; 52. a eel grass pond; 6. a biostable pond.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
The front purification system for the lakes and reservoirs is characterized by comprising: an interception pond 1, a diversion channel 2, a regulation and storage pond 3, a sedimentation pond, a plant purification pond 5 and a biostabilization pond 6;
the intercepting pond 1 is used as a first treatment section for directly receiving upstream incoming water, and an intercepting mechanism 11 for intercepting floating objects in the upstream incoming water is arranged in the intercepting pond 1 and is used for intercepting floating garbage and some large-volume particles; one end of the diversion channel 2 is communicated with the interception pond 1, the other end of the diversion channel is provided with two water outlets, one water outlet is communicated with the storage pond 3, the other water outlet is directly communicated with a lake/reservoir through a flood discharge channel, and when a flood discharge period is met, flood can be directly discharged into the lake/reservoir, so that the system is prevented from being broken down;
aquatic plants are planted in the plant purification pond 5 and used for biologically adsorbing metal ions and organic matters in the upstream incoming water; a blocking part 41 is arranged between the sedimentation pond and the plant purification pond 5; the blocking part 41 is made of porous inorganic materials, so that water flow entering the plant purification pond 5 is uniform, plants in the pond are not easy to damage, and the porous inorganic materials can adsorb some organic matters, so that the treatment pressure of the plant purification pond 5 is reduced;
filter-feeding fishes are cultured in the upper layer water area and the middle layer water area in the biological stabilization pond 6, and benthonic animals are cultured in the bottom layer water area.
The interior of the regulation and storage pond 3 is divided into an aeration zone 31 and a purification zone 32 according to the water inlet direction; the aeration zone 31 is internally provided with an aeration device 311 for carrying out aeration treatment on upstream incoming water and carrying out oxidative decomposition on organic matters, in the embodiment, a blast aeration system is selected as the aeration system, and it is worth mentioning that the energy supply source of the blast aeration system can be solar power generation or hydroelectric power generation, so that the aeration zone is environment-friendly and convenient; the upper water area in the purification area 32 is planted with water-floating plants 321, such as water lily or Nuphar pumilum and other plants, the roots of which can adsorb and filter particles in water, the bacteria around the roots can decompose organic matters in water, including phenol and other toxic organic matters, and the whole plants can absorb inorganic matters, including lead, mercury and other toxic heavy metals, so that the seriously polluted water is purified.
The plant purification pond 5 comprises a curly pondweed pond 51 and a bitter herb pond 52 which are respectively planted with curly pondweed and bitter herb, the curly pondweed has higher enrichment capacity on zinc, the curly pondweed is cultivated for about one month by using zinc-containing mixed wastewater, and the zinc content in the body is more than 8 times of the original zinc content; the potamogeton crispus has strong arsenic purifying capacity, its natural arsenic content is about 6ppm, but under the condition of cultivating mixed waste water containing respectively 2ppm of dipotassium arsenate, zinc sulfate, mercury chloride and potassium dichromate, the arsenic content in potamogeton crispus body can be up to 16 times of original arsenic content; the tape grass can rapidly absorb substances such as nitrogen, phosphorus and the like from the water body, has obvious purification effect and absorption effect on TN and TP in the polluted water body, can obviously improve the oxidation-reduction environment of bottom mud of the urban slow flow polluted river, reduces the content of ferrous serving as a blackening substance, can promote the natural circulation of iron and sulfur in the black and odorous river, and prevents the accumulation of ferrous and H2S.
The intercepting mechanisms 11 are used for intercepting floating garbage and particulate matters in upstream incoming water through the blocking effect of the clustered reed or/and vanilla.
The depth of the sedimentation pond is 2-4 meters; the hydraulic retention time is 24 hours, and silt, phosphorus and the like in the incoming water are effectively removed through gravity sedimentation in the sedimentation zone 4.
The potamogeton crispus pond 51 is 1.5 meters in water depth; the water depth of the eel grass pond 52 is 0.5-1 m.
The depth of the biological stabilization pond 6 is 1.5-2 meters, and the hydraulic retention time is 36 hours.
The porous inorganic material is volcanic rock which is corrosion resistant and inert, does not participate in biochemical reaction of a biological membrane in the environment, does not promote growth of microorganisms in water, and has long replacement period.
The flow guide channel 2 includes: an inlet channel 21 and two distribution channels 22 in communication with the inlet channel 21; the water inlet channel 21 receives upstream incoming water, and water outlets at the tail ends of the two water distribution channels 22 are respectively communicated with the storage pond 3 and the lake/reservoir; a weir plate 221 is movably arranged in the water diversion channel 22 communicated with the lake/reservoir, at ordinary times, the weir plate 221 plays a role of blocking, upstream water enters the regulation and storage pond 3 completely, and when a flood discharge period is met, the weir plate 221 is opened to divert water; a pasteurizing groove 222 with calibrated flow scales is arranged in the diversion channel 22 communicated with the storage pond 3, and whether the weir plate 221 is opened or not can be judged by observing the water level scales of the pasteurizing groove 222.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The front purification system for the lakes and reservoirs is characterized by comprising: an interception pond, a diversion channel, a storage pond, a sedimentation pond, a plant purification pond and a biological stabilization pond;
an intercepting mechanism for intercepting floating objects in the incoming upstream water is arranged in the intercepting pond; one end of the diversion channel is communicated with the interception pond, and the other end of the diversion channel is provided with two water outlets, wherein one water outlet is communicated with the regulation pond, and the other water outlet is directly communicated with a lake/reservoir through a flood discharge channel;
a separation part is arranged between the sedimentation pond and the plant purification pond; the barrier portion is made of a porous inorganic material;
filter-feeding fishes are cultured in the upper layer water area and the middle layer water area in the biological stabilization pond, and benthonic animals are cultured in the bottom layer water area.
2. The system of claim 1, wherein the regulation pond is divided into an aeration zone and a purification zone according to the water inlet direction; an aeration device is arranged in the aeration zone; and floating plants are planted in the upper water area in the purification area.
3. The advanced lake reservoir purification system as claimed in claim 1, wherein the plant purification ponds comprise potamogeton crispus ponds and eel grass ponds, and potamogeton crispus and eel grass are planted respectively.
4. The system of claim 1, wherein the intercepting means is used for planting root aquatic plants including reed and/or vanilla in clusters.
5. The front purification system for lakes and reservoirs of claim 1, wherein the depth of the sedimentation pond is 2-4 meters; the hydraulic retention time was 24 hours.
6. The advanced purification system of lake and reservoir as claimed in claim 3 wherein said potamogeton crispus pond has a water depth of 1.5 m; the water depth of the eel grass pond is 0.5-1 m.
7. The pre-purification system for lakes and reservoirs of claim 1, wherein the biostabilization pond has a water depth of 1.5-2 m and a hydraulic retention time of 36 hours.
8. The system of claim 1, wherein the porous inorganic material is volcanic rock.
9. The pre-purification system for lakes and reservoirs of claim 1, wherein the diversion trench comprises: the water distribution channel comprises a water inlet channel and two water distribution channels communicated with the water inlet channel; the water outlets at the tail ends of the two water distribution channels are respectively communicated with the regulation pond and the lake/reservoir; a weir plate is movably arranged in the water diversion channel communicated with the lake/reservoir; a Pasteur groove for calibrating flow scales is arranged in the diversion channel communicated with the storage pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192412.4A CN114620888A (en) | 2022-02-28 | 2022-02-28 | Leading clean system of lake reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210192412.4A CN114620888A (en) | 2022-02-28 | 2022-02-28 | Leading clean system of lake reservoir |
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| CN114620888A true CN114620888A (en) | 2022-06-14 |
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| CN202210192412.4A Pending CN114620888A (en) | 2022-02-28 | 2022-02-28 | Leading clean system of lake reservoir |
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| CN107619103A (en) * | 2017-10-27 | 2018-01-23 | 河海大学 | A kind of tipping bucket type power-assisted is aerated Ecosystem restoration system |
| CN207418392U (en) * | 2017-10-30 | 2018-05-29 | 南京师范大学 | A kind of intermission aeration type activated sludge merges water plant purifier |
| CN209857978U (en) * | 2019-06-14 | 2019-12-27 | 广州市波华水处理设备有限公司 | Novel Parshall flowmeter |
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