CN107434330B - Artificial rapid infiltration sewage treatment method - Google Patents
Artificial rapid infiltration sewage treatment method Download PDFInfo
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- CN107434330B CN107434330B CN201610361832.5A CN201610361832A CN107434330B CN 107434330 B CN107434330 B CN 107434330B CN 201610361832 A CN201610361832 A CN 201610361832A CN 107434330 B CN107434330 B CN 107434330B
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- 239000010865 sewage Substances 0.000 title claims abstract description 81
- 230000008595 infiltration Effects 0.000 title claims abstract description 37
- 238000001764 infiltration Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000007599 discharging Methods 0.000 claims abstract description 29
- 238000005345 coagulation Methods 0.000 claims abstract description 21
- 230000015271 coagulation Effects 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 17
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 16
- 238000004062 sedimentation Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 14
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 239000006228 supernatant Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 208000034699 Vitreous floaters Diseases 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000000701 coagulant Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an artificial rapid infiltration sewage treatment method, which comprises the following steps: s1, enabling the domestic sewage to enter a grid pool, and separating large floating objects in the sewage by the grid pool; s2, the sewage enters a grit chamber, and sand grain substances in the sewage are removed by the grit chamber; s3, discharging the sewage into a coagulation tank, and carrying out coagulation treatment on the sewage by the coagulation tank; s4, discharging the sewage into a primary sedimentation tank, and completing sludge-water separation by the primary sedimentation tank; s5, discharging the sewage into a pre-aeration tank, and aerating by the pre-aeration tank to improve the concentration of dissolved oxygen in the water; s6, distributing water by a water distribution system, and then discharging the sewage into an artificial rapid infiltration tank; s7, discharging the effluent into a disinfection tank, and performing ultraviolet disinfection on the effluent by the disinfection tank; and S8, discharging the effluent reaching the discharge standard into a water outlet pool, and discharging the effluent into a receiving water body through a main discharge port. The sewage treatment method has the advantages of simple process flow, high hydraulic load of the system, low investment and operation cost, short construction period and good water outlet effect.
Description
Technical Field
The invention relates to an artificial rapid infiltration sewage treatment method, belonging to the technical field of sewage treatment.
Background
At present, due to the fact that the discharged sewage exceeds the standard and other environmental problems, along with the development of social economy, the environmental awareness of people is continuously enhanced, the national requirements for environmental protection are more and more strict, environmental pollution is treated, energy conservation and emission reduction are carried out, and otherwise, the sustainable development of social economy is seriously hindered.
The meaning of sustainable development is that the method not only meets the needs of the contemporary people, but also does not endanger the development of the offspring people to meet the needs of the contemporary people. This definition is gaining acceptance worldwide. The core of sustainable development is economic development, which is an irreversible inevitable trend, so that the requirements of social and economic development are met, the bearing capacity of the environment is fully considered, and meanwhile, water resources are effectively and practically protected, so that the water resources are continuously utilized, and the sustainable development of economy is supported. The comprehensive treatment of sewage is required, the water environment and the living environment are improved, and the sustainable utilization of water resources is realized, so that the requirement of economic sustainable development is met.
Disclosure of Invention
The invention aims to provide an artificial rapid infiltration sewage treatment method aiming at the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: an artificial rapid infiltration sewage treatment method comprises the following steps:
s1, collecting domestic sewage to a sewage treatment station through a pipe network, then feeding the domestic sewage into a grid pond, and removing large floaters in the sewage through the grid pond;
s2, lifting the sewage treated by the grid tank to a grit chamber by a lifting pump, and removing sand grain substances in the sewage by the grit chamber;
s3, discharging the sewage treated by the grit chamber into a coagulation tank, and carrying out coagulation treatment on the sewage by the coagulation tank;
s4, discharging the sewage treated by the coagulation tank into a primary sedimentation tank, completing sludge-water separation by the primary sedimentation tank, and removing suspended matters and total phosphorus in the sewage;
s5, discharging the sewage obtained after the treatment in the primary sedimentation tank into a pre-aeration tank, and aerating by the pre-aeration tank to improve the concentration of dissolved oxygen in the water;
s6, distributing water in the sewage treated by the pre-aeration tank through a water distribution system, and then discharging the sewage into an artificial rapid infiltration tank; wherein, the sewage is evenly and intermittently distributed on the upper part of the filler in the artificial rapid infiltration tank by a water distribution system, and the supernatant fluid is subjected to comprehensive physical, chemical and biological reactions in the process of flowing through the filler from top to bottom in an alternate dry-wet operation mode, so that pollutants are removed; wherein the outer surface of the filler is full of a biological film;
s7, discharging the effluent treated by the artificial rapid infiltration tank into a disinfection tank, and performing ultraviolet disinfection on the effluent by the disinfection tank;
and S8, discharging the effluent treated by the disinfection tank into a water outlet tank according to the discharge standard, and discharging the effluent into a receiving water body through a main discharge port.
Preferably, a regulation tank is further provided between step S2 and step S3, and the sewage is homogenized and homogenized by a stirring device provided in the regulation tank.
Preferably, a coagulation reagent or a phosphorus removal reagent is added into the coagulation tank in step S3.
Preferably, the sludge subjected to sludge-water separation in the primary sedimentation tank in step S4 is pumped into a sludge concentration tank by a sludge pump, the sludge is concentrated and dehydrated, the dehydrated sludge is made into a sludge cake and is transported outside, and the dehydrated supernatant is discharged into a grid tank for circulation treatment.
Preferably, the end of the pre-aeration tank in the step S5 is provided with a drop aeration platform.
The invention has the beneficial effects that: the sewage treatment method has the advantages of simple process flow, high hydraulic load of the system, low investment and operation cost, short construction period, good water outlet effect, simple and convenient operation and maintenance, no generation of activated sludge, and capability of quickly removing organic pollutants or nitrogen pollutants in the sewage, effectively improving the water quality, saving water resources and realizing the development of circular economy.
Drawings
FIG. 1 is a schematic view of a wastewater treatment system according to the present invention.
FIG. 2 is a schematic view of the sewage treatment process of the present invention.
Detailed Description
FIG. 1 shows an artificial rapid infiltration sewage treatment system, which mainly comprises a pretreatment unit, an artificial rapid infiltration treatment unit and a post-treatment unit.
1. Pre-processing unit
If the incoming water of the CRI system (Constructed Rapid Infiltration Sewage treatment System, CRI system for short) contains a large amount of inorganic and organic particles, the problems of blockage of the Rapid Infiltration tank, increase of drying time, reduction of hydraulic load and the like can be caused when the sewage is directly dosed onto the Rapid Infiltration tank. In order to comprehensively exert the advantages of the manual rapid infiltration system to the maximum extent, carry out the clearance treatment on the particles and reduce the load of other pollutants, a pretreatment system is usually arranged before the sewage enters the rapid infiltration tank. CRI systems typically employ a coagulation precipitation process, a complex hydrolysis process, and a modified A2O process as pretreatment units.
2. Artificial rapid infiltration treatment unit
The artificial rapid infiltration tank is a main treatment unit of the CRI system, the artificial rapid infiltration technology simulates and strengthens the traditional land treatment process, and the CRI medium with good infiltration performance is used as a filler, and the sewage flows through the filler from top to bottom in an alternating dry-wet operation mode to generate comprehensive physical, chemical and biological reactions so as to remove pollutants. The most important dirt cleaning task is carried out by the rich biological membrane attached to the surface of the filter material particles. A great amount of living microorganisms are the most unique dirt cleaning and benefiting devices of the manual rapid infiltration processing unit. A large amount of dissolved oxygen is brought in by the ingenious water distribution mode, the sewage purification of the manual rapid infiltration treatment unit is most effectively guaranteed, and no matter organic pollutants or nitrogen pollutants are well treated under the action of microorganisms, so that the water quality is effectively improved.
3. Post-processing unit
The post-treatment unit of the CRI system can adopt a clear water collecting tank or an ultraviolet disinfection channel, and can further improve the quality of the effluent of the CRI system according to requirements, so that the effluent of the CRI system can be suitable for being discharged into a closed water body with higher eutrophication risk, and a high-efficiency composite biological pond and a high-efficiency denitrification filter tank can be adopted to further improve the treatment effect of the CRI system on TN and TP.
FIG. 2 shows that the invention discloses an artificial rapid infiltration sewage treatment method, which comprises the following steps:
s1, collecting domestic sewage to a sewage treatment station through a pipe network, then feeding the domestic sewage into a grid pond, and removing large floaters in the sewage through the grid pond;
s2, lifting the sewage treated by the grid tank to a grit chamber by a lifting pump, and removing sand grain substances in the sewage by the grit chamber;
s3, discharging the sewage treated by the grit chamber into a coagulation tank, and carrying out coagulation treatment on the sewage by the coagulation tank;
s4, discharging the sewage treated by the coagulation tank into a primary sedimentation tank, completing sludge-water separation by the primary sedimentation tank, and removing suspended matters and total phosphorus in the sewage;
s5, discharging the sewage obtained after the treatment in the primary sedimentation tank into a pre-aeration tank, and aerating by the pre-aeration tank to improve the concentration of dissolved oxygen in the water;
s6, distributing water in the sewage treated by the pre-aeration tank through a water distribution system, and then discharging the sewage into an artificial rapid infiltration tank; wherein, the sewage is evenly and intermittently distributed on the upper part of the filler in the artificial rapid infiltration tank by a water distribution system, and the supernatant fluid is subjected to comprehensive physical, chemical and biological reactions in the process of flowing through the filler from top to bottom in an alternate dry-wet operation mode, so that pollutants are removed; wherein the outer surface of the filler is full of a biological film;
s7, discharging the effluent treated by the artificial rapid infiltration tank into a disinfection tank, and performing ultraviolet disinfection on the effluent by the disinfection tank;
and S8, discharging the effluent treated by the disinfection tank into a water outlet tank according to the discharge standard, and discharging the effluent into a receiving water body through a main discharge port.
In the present invention, it is preferable that a conditioning tank is further provided between step S2 and step S3, and the sewage is homogenized and homogenized by a stirring device provided in the conditioning tank.
In the present invention, it is preferable that a coagulation reagent or a phosphorus removal reagent is added into the coagulation tank in step S3.
In the present invention, it is preferable that the sludge subjected to sludge-water separation in the primary sedimentation tank in step S4 is pumped and discharged into a sludge concentration tank by a sludge pump, the sludge is concentrated and dehydrated, the dehydrated sludge is made into a sludge cake and is transported to an outside, and the dehydrated supernatant is discharged into a grid tank for circulation treatment.
In the present invention, it is preferable that the pre-aeration tank in step S5 has a drop aeration table at its end.
In the process, the traditional sewage treatment process is enhanced by adopting an artificial rapid infiltration technology, the CRI medium (mainly comprising natural river sand with a certain gradation and doped with active mineral filler) with good permeability is used as the filler, and the sewage is subjected to comprehensive physical, chemical and biological reactions in the process of flowing through the filler from top to bottom in an alternate dry-wet operation mode so as to remove pollutants. The most important dirt cleaning task is carried out by the abundant biofilm attached to the surface of the filler particles. A great amount of living microorganisms are the most unique dirt cleaning and benefiting devices of the manual rapid infiltration processing unit. A large amount of dissolved oxygen is brought in by the ingenious water distribution mode, the sewage purification of the manual rapid infiltration treatment unit is most effectively guaranteed, and no matter organic pollutants or nitrogen pollutants are well treated under the action of microorganisms, so that the water quality is effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. An artificial rapid infiltration sewage treatment method is characterized by comprising the following steps:
s1, collecting domestic sewage to a sewage treatment station through a pipe network, then feeding the domestic sewage into a grid pond, and removing large floaters in the sewage through the grid pond;
s2, lifting the sewage treated by the grid tank to a grit chamber by a lifting pump, and removing sand grain substances in the sewage by the grit chamber;
s3, discharging the sewage treated by the grit chamber into a coagulation tank, and carrying out coagulation treatment on the sewage by the coagulation tank;
s4, discharging the sewage treated by the coagulation tank into a primary sedimentation tank, completing sludge-water separation by the primary sedimentation tank, and removing suspended matters and total phosphorus in the sewage;
s5, discharging the sewage obtained after the treatment in the primary sedimentation tank into a pre-aeration tank, and aerating by the pre-aeration tank to improve the concentration of dissolved oxygen in the water;
s6, distributing water in the sewage treated by the pre-aeration tank through a water distribution system, and then discharging the sewage into an artificial rapid infiltration tank; wherein, the sewage is evenly and intermittently distributed on the upper part of the filler in the artificial rapid infiltration tank by a water distribution system, and the supernatant fluid is subjected to comprehensive physical, chemical and biological reactions in the process of flowing through the filler from top to bottom in an alternate dry-wet operation mode, so that pollutants are removed; wherein the outer surface of the filler is full of a biological film;
s7, discharging the effluent treated by the artificial rapid infiltration tank into a disinfection tank, and performing ultraviolet disinfection on the effluent by the disinfection tank;
s8, discharging the effluent treated by the disinfection tank into a water outlet tank after reaching the discharge standard, and discharging the effluent into a receiving water body through a main discharge port;
and (4) pumping the sludge subjected to sludge-water separation in the primary sedimentation tank in the step (S4) into a sludge concentration tank by a sludge pump, concentrating and dehydrating the sludge, preparing the dehydrated sludge into a sludge cake for outward transportation, and discharging the dehydrated supernatant into a grid tank for circular treatment.
2. The artificial rapid infiltration sewage treatment method of claim 1, wherein a regulation tank is further provided between step S2 and step S3, and sewage is homogenized and homogenized by a stirring device provided in the regulation tank.
3. The artificial rapid infiltration sewage treatment method of claim 1, wherein a coagulating agent or a dephosphorizing agent is added into the coagulation tank in step S3.
4. The artificial rapid infiltration sewage treatment method of claim 1, wherein the end of the pre-aeration tank in step S5 is provided with a drop aeration table.
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| CN201610361832.5A CN107434330B (en) | 2016-05-26 | 2016-05-26 | Artificial rapid infiltration sewage treatment method |
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| CN107434330B true CN107434330B (en) | 2020-11-10 |
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| CN108689720A (en) * | 2018-05-29 | 2018-10-23 | 江苏宏发海绵城市科技有限公司 | A kind of manufacturing method of mixed sponge water-permeable brick |
| CN113072260A (en) * | 2021-04-21 | 2021-07-06 | 成都理工大学 | Treatment method of enhanced nitrogen and phosphorus removal resource recycling pig raising wastewater |
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| CN105084669A (en) * | 2015-08-21 | 2015-11-25 | 东莞市科达环保工程有限公司 | System and technique for treating town sewage into standard surface water Class IV |
| CN205045957U (en) * | 2015-09-28 | 2016-02-24 | 南平正大欧瑞信生物科技开发有限公司 | Energy -saving leather waste water integrated processing system |
| CN105481198A (en) * | 2016-01-22 | 2016-04-13 | 陈璟 | Comprehensive sewage treatment device |
-
2016
- 2016-05-26 CN CN201610361832.5A patent/CN107434330B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201010606Y (en) * | 2007-05-11 | 2008-01-23 | 王宝贞 | Sewage treatment system with zero discharge of sludge |
| CN102826726A (en) * | 2012-09-25 | 2012-12-19 | 重庆三峰环境产业集团有限公司 | Refuse incineration plant leachate treatment process |
| CN102942285A (en) * | 2012-11-06 | 2013-02-27 | 中国石油集团工程设计有限责任公司 | Sewage treatment system and method for natural gas purifying factory in H2S-containing gas field |
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Effective date of registration: 20220211 Address after: 214000 south of Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee after: Jiangsu Qingquan Environmental Protection Group Co.,Ltd. Address before: 214000 south of Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee before: JIANGSU QINGQUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |