CN105502857A - Sewage treatment equipment - Google Patents
Sewage treatment equipment Download PDFInfo
- Publication number
- CN105502857A CN105502857A CN201610088716.0A CN201610088716A CN105502857A CN 105502857 A CN105502857 A CN 105502857A CN 201610088716 A CN201610088716 A CN 201610088716A CN 105502857 A CN105502857 A CN 105502857A
- Authority
- CN
- China
- Prior art keywords
- biological reaction
- aeration tank
- pond
- tank
- filtering layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 66
- 238000005273 aeration Methods 0.000 claims abstract description 51
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 235000009496 Juglans regia Nutrition 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 235000020234 walnut Nutrition 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 240000007049 Juglans regia Species 0.000 claims 1
- 239000010802 sludge Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000005345 coagulation Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 241000758789 Juglans Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 241000385736 bacterium B Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000001364 upper extremity Anatomy 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003643 water by type 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
- 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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
-
- 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
- C02F3/30—Aerobic and anaerobic 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides sewage treatment equipment which comprises a water inlet pipe, an anaerobic tank, an aeration tank, a membrane biological reaction tank, a membrane assembly and a suction pump, wherein the membrane biological reaction tank is arranged inside the aeration tank; the aeration tank is arranged inside the anaerobic tank, the water inlet pipe leads to the bottom of the anaerobic tank, the membrane assembly is arranged in the membrane biological reaction tank, the upper portion of the membrane assembly is connected with the upper portion of the membrane biological reaction tank through a connecting plate, a vibration motor is fixed to the top of the membrane assembly, and the membrane assembly is connected with the suction pump; a transverse filter layer is arranged at the bottom of the membrane biological reaction tank, so that the membrane biological reaction tank is communicated with the aeration tank, and a longitudinal filter layer is arranged on the upper portion of the side wall of the aeration tank, so that the aeration tank is communicated with the anaerobic tank; an air blower is connected with an aeration pipe, and the aeration pipe is transversely arranged between the transverse filter layer and the aeration tank; the longitudinal filter layer is made of honeycomb activated carbon.
Description
Technical field
The invention belongs to energy-conserving and environment-protective technical field, be specially a kind of sewage disposal device.
Background technology
Sewage disposal device effectively can process the sanitary sewage in city, trade effluent etc., avoids sewage and pollutent to flow directly into waters, to improving the ecological environment, promoting city taste and promote economic development significant.Modern sewage treatment technology, divides by degree for the treatment of, can be divided into one-level, secondary and tertiary treatment.Coagulation, the main solid pollution material removed in suspended state in sewage, physical treatment process major part can only complete the requirement of coagulation.Through the sewage of coagulation, BOD generally can remove about 30%, does not reach emission standard.Coagulation belongs to the pre-treatment of second-stage treatment.Second-stage treatment, be the organic pollution materials (BOD, COD material) of colloid and dissolved state in main removal sewage, clearance can reach more than 90%, makes organic pollutant reach emission standard.Tertiary treatment, processes the soluble inorganic matter etc. that the organism of difficult degradation, nitrogen and phosphorus etc. can cause body eutrophication further.Main method has biological carbon and phosphorous removal method, coagulant sedimentation, sand filtration method, active carbon adsorption, ion exchange method and electric osmose analytical method etc.
The Novel state Waste Water Treatment that film-bioreactor (MembraneBio-Reactor, MBR) is membrane separation technique and biologic treating technique combination.Replace traditional biological treatment technology end second pond with membrane module, in bio-reactor, keep high reactivity sludge concentration, improve biological treatment organic loading, thus reduce sewage treatment facility floor space, and by keeping low sludge loading to reduce surplus sludge volume.Mainly utilize the active sludge in membrane separation plant trap water and larger molecular organics.In membrane bioreactor system, active sludge (MLSS) concentration can be promoted to 8000 ~ 10,000mg/L, even higher; Sludge age (SRT) can extend to more than 30 days.Membrane bioreactor is because of its effective crown_interception, and can retain generation cycle longer microorganism, can realize deep purification of waste water, Simultaneous Nitrification bacterium can fully breed in system, and its nitrification effect is obvious, provides possibility to deep phosphorous removal denitrogenation.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provides a kind of sewage disposal device.
Sewage disposal device of the present invention comprises water inlet pipe, be sick of pond, aeration tank, membrane biological reaction pond, membrane module, suction pump, and described membrane biological reaction pond is arranged in described aeration tank; Described aeration tank is arranged in described lonely pond, described water inlet pipe leads to bottom described lonely pond, described membrane module is arranged in described membrane biological reaction pond, the top of described membrane module connects the top in described membrane biological reaction pond by web plate, the top of described membrane module is fixed with a vibrating motor, and described membrane module connects described suction pump; The bottom in described membrane biological reaction pond is provided with horizontal filtering layer, described aeration tank and described membrane biological reaction pond is communicated with by described horizontal filtering layer, the side wall upper part of described aeration tank is provided with longitudinal filtering layer, is communicated with described lonely pond and described aeration tank by described longitudinal filtering layer; Have a gas blower to connect aeration tube, described aeration tube is horizontally installed between horizontal filtering layer and described aeration tank; Described longitudinal filtering layer is made up of cellular activated carbon; Described horizontal filtering layer by the zeolite filler of particle diameter to be the walnut shell filtering material of 1.25-1.60mm and particle diameter be 2-2.5mm mix by weight 4:11.Be sick of pond, aeration tank, membrane biological reaction pond upper limb height is identical.
As optimization, select Zhengzhou Qi Xin water-purifying material company limited hole internal diameter 4-5mm, through the water-fast cellular activated carbon of footpath 0.5-0.7mm; Grand of Wen County gac water treatment company limited particle diameter is the walnut shell filtering material of 1.25-1.60mm and particle diameter is the zeolite filler of 2-2.5mm.Cangzhou Zhongxin Biological Technology Co., Ltd. sewage disposal special bacteria bacterium B is added in lonely pond; Cangzhou Zhongxin Biological Technology Co., Ltd. sewage disposal special bacteria bacterium A is added in aeration tank and membrane biological reaction pond.In lonely pond, sludge concentration remains 18 ~ 19g/L; In aeration tank, sludge concentration remains 15 ~ 16g/L.In membrane biological reaction pond, sludge concentration remains 12 ~ 13g/L.
Sewage disposal device of the present invention, have employed the project organization that lonely pond, aeration tank, membrane biological reaction pond are nested one by one, intensive optimization is taken up an area little; Be communicated with aeration tank by longitudinal filtering layer pond of being sick of simultaneously; Waste water through anaerobic biological treatment enters in aeration tank after longitudinal filtering layer filters; By horizontal filtering layer, aeration tank is communicated with membrane biological reaction pond; Enter membrane biological reaction pond through the waste water of aeration and biological process through horizontal filtering layer and carry out secondary aerated reaction, after being filtered by membrane module, extract the waste water after filtering out through suction pump.Arrange vibrating motor by the top at membrane module, vibrating motor drives membrane module vibration, thus the pollution decreasing membrane module enhances the life-span of membrane module; The horizontal filtering layer of the present invention by optimization and the filtration of longitudinal filtering layer, and dual aerated reaction; When substantially increasing sewage disposal, the concentration of sludge concentration and the efficiency of anaerobe reaction and aeration and biological reaction in pond.The design that the present invention is intensive, operation controls simple, and floor space is little, reliability and processing efficiency high; Especially to TP(total phosphorus) process there is very outstanding effect, outlet effect is higher than higher than GB18918-2002 " urban wastewater treatment firm pollutant emission standard " one-level A standard.
Accompanying drawing explanation
Fig. 1 is sewage disposal device structural representation of the present invention.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; those skilled in the art to nonessential improvement and adjustment more of the present invention, still belong to protection scope of the present invention according to content of the present invention.
Embodiment: as shown in Figure 1, sewage disposal device comprises water inlet pipe 1, be sick of pond 2, aeration tank 3, membrane biological reaction pond 4, membrane module 6, suction pump 5, the hollow fiber film assembly that membrane module 6 is arranged for immersion; Lonely pond 2, aeration tank 3, membrane biological reaction pond 4 upper limb height are consistent; Membrane biological reaction pond 4 is arranged in aeration tank 3; Aeration tank 3 is arranged in lonely pond 2, and water inlet pipe 1 leads to bottom lonely pond 2, and membrane module 6 is arranged in membrane biological reaction pond 4, and the top of web plate 7 junctional membrane biological reaction tank 4 is passed through on the top of membrane module 6, and web plate 7 can be made up of steel wire or steel disc; The top of membrane module 6 is fixed with a vibrating motor 8, and vibrating motor 8 drives membrane module 6 to vibrate.Membrane module 6 connects suction pump 5; The bottom in membrane biological reaction pond 4 is provided with horizontal filtering layer 9 thus is communicated with membrane biological reaction pond 4 aeration tank 3, and sewage can enter in membrane biological reaction pond 4 by aeration tank 3 by horizontal filtering layer 9; The side wall upper part of aeration tank 3 is provided with longitudinal filtering layer 10 thus is communicated with lonely pond 2 aeration tank 3; Sewage can be entered in aeration tank 3 by lonely pond 2 by longitudinal filtering layer 10.Have a gas blower 11 to connect aeration tube 12, aeration tube 12 is horizontally installed between horizontal filtering layer 9 and aeration tank 3; Longitudinal filtering layer 10 is Zhengzhou Qi Xin water-purifying material company limited hole internal diameter 4-5mm, through the water-fast cellular activated carbon filtering layer of footpath 0.5-0.7mm; The walnut shell filtering material of horizontal filtering layer 9 be grand of Wen County gac water treatment company limited particle diameter be 1.25-1.60mm and particle diameter are the zeolite filler filtering layer that mixes of 4:11 by weight of 2-2.5mm.Being sick of, pond 2 is interior adds Cangzhou Zhongxin Biological Technology Co., Ltd. sewage disposal special bacteria bacterium B; Cangzhou Zhongxin Biological Technology Co., Ltd. sewage disposal special bacteria bacterium A is added in aeration tank 3 and membrane biological reaction pond 4.In lonely pond 2, sludge concentration remains 18 ~ 19g/L; In aeration tank 3, sludge concentration remains 15 ~ 16g/L.In membrane biological reaction pond 4, sludge concentration remains 12 ~ 13g/L.
Experiment sewage, its water quality is: COD, 139.78 ~ 1143.27mg/L, NH4+-N, 12.43 ~ 48.18mg/L, TN, 26.55 ~ 53.18mg/L, TP, 70 ~ 331mg/L, pH value 7.15 ~ 7.9lmg/L, and temperature is 23 ~ 35 DEG C.Aeration time should control at about 4h.COD, 4.33mg/L, NH4+-N, 1.12mg/L, TN, 3.44mg/L, TP, 0.07mg/L after sewage disposal device process of the present invention.Higher than GB18918-2002 " urban wastewater treatment firm pollutant emission standard " one-level A standard.
Claims (2)
1. a sewage disposal device, comprise water inlet pipe, lonely pond, aeration tank, membrane biological reaction pond, membrane module, suction pump, described membrane biological reaction pond is arranged in described aeration tank; Described aeration tank is arranged in described lonely pond, described water inlet pipe leads to bottom described lonely pond, it is characterized in that described membrane module is arranged in described membrane biological reaction pond, the top of described membrane module connects the top in described membrane biological reaction pond by web plate, the top of described membrane module is fixed with a vibrating motor, and described membrane module connects described suction pump; The bottom in described membrane biological reaction pond is provided with horizontal filtering layer, described aeration tank and described membrane biological reaction pond is communicated with by described horizontal filtering layer, the side wall upper part of described aeration tank is provided with longitudinal filtering layer, is communicated with described lonely pond and described aeration tank by described longitudinal filtering layer; Have a gas blower to connect aeration tube, described aeration tube is horizontally installed between horizontal filtering layer and described aeration tank.
2. sewage disposal device according to claim 1, is characterized in that described longitudinal filtering layer is made up of cellular activated carbon; Described horizontal filtering layer by the zeolite filler of particle diameter to be the walnut shell filtering material of 1.25-1.60mm and particle diameter be 2-2.5mm mix by weight 4:11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088716.0A CN105502857B (en) | 2016-02-17 | 2016-02-17 | A kind of sewage disposal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088716.0A CN105502857B (en) | 2016-02-17 | 2016-02-17 | A kind of sewage disposal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105502857A true CN105502857A (en) | 2016-04-20 |
| CN105502857B CN105502857B (en) | 2018-12-11 |
Family
ID=55711240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610088716.0A Expired - Fee Related CN105502857B (en) | 2016-02-17 | 2016-02-17 | A kind of sewage disposal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105502857B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045205A (en) * | 2016-07-07 | 2016-10-26 | 何颖 | Industrial wastewater treatment device |
| CN107162328A (en) * | 2017-06-08 | 2017-09-15 | 合肥同创园林科技有限公司 | A kind of gardens sewage-treatment plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07275887A (en) * | 1994-04-06 | 1995-10-24 | Toto Ltd | Purifying tank |
| CN1785829A (en) * | 2005-11-15 | 2006-06-14 | 中国科学院生态环境研究中心 | Composite membrane bioreactor |
| CN201538734U (en) * | 2009-10-15 | 2010-08-04 | 河南科达节能环保有限公司 | Sewage treatment device |
| CN201896111U (en) * | 2010-11-10 | 2011-07-13 | 成都达源环保工程有限公司 | Membrane treatment equipment |
-
2016
- 2016-02-17 CN CN201610088716.0A patent/CN105502857B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07275887A (en) * | 1994-04-06 | 1995-10-24 | Toto Ltd | Purifying tank |
| CN1785829A (en) * | 2005-11-15 | 2006-06-14 | 中国科学院生态环境研究中心 | Composite membrane bioreactor |
| CN201538734U (en) * | 2009-10-15 | 2010-08-04 | 河南科达节能环保有限公司 | Sewage treatment device |
| CN201896111U (en) * | 2010-11-10 | 2011-07-13 | 成都达源环保工程有限公司 | Membrane treatment equipment |
Non-Patent Citations (1)
| Title |
|---|
| 罗永明: "《中药化学成分提取分离技术与方法》", 31 January 2016, 上海科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045205A (en) * | 2016-07-07 | 2016-10-26 | 何颖 | Industrial wastewater treatment device |
| CN107162328A (en) * | 2017-06-08 | 2017-09-15 | 合肥同创园林科技有限公司 | A kind of gardens sewage-treatment plant |
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| Publication number | Publication date |
|---|---|
| CN105502857B (en) | 2018-12-11 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181116 Address after: 221700 No. 16 Beiyuan Road, Fengxian County, Xuzhou City, Jiangsu Province Applicant after: Xuzhou Kangda environmental protection water service Co., Ltd. Address before: 030009 Building 4, South West Bank District, 140 Qianfeng South Road, Wanbailin District, Taiyuan City, Shanxi Province Applicant before: Wang Wei |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181211 Termination date: 20190217 |