CN104556570A - Method for utilizing zinc ions in zinc industrial wastewater resources - Google Patents
Method for utilizing zinc ions in zinc industrial wastewater resources Download PDFInfo
- Publication number
- CN104556570A CN104556570A CN201410815069.XA CN201410815069A CN104556570A CN 104556570 A CN104556570 A CN 104556570A CN 201410815069 A CN201410815069 A CN 201410815069A CN 104556570 A CN104556570 A CN 104556570A
- Authority
- CN
- China
- Prior art keywords
- zinc
- exchange resin
- ion exchange
- ion
- zinc ion
- 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
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000011701 zinc Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 15
- 239000010842 industrial wastewater Substances 0.000 title abstract 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 28
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 28
- 239000000706 filtrate Substances 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000010865 sewage Substances 0.000 claims description 30
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000012141 concentrate Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 230000001580 bacterial effect Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 10
- 230000000813 microbial effect Effects 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 238000010828 elution Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000017060 Arachis glabrata Nutrition 0.000 claims description 5
- 244000105624 Arachis hypogaea Species 0.000 claims description 5
- 235000010777 Arachis hypogaea Nutrition 0.000 claims description 5
- 235000018262 Arachis monticola Nutrition 0.000 claims description 5
- 241000194108 Bacillus licheniformis Species 0.000 claims description 5
- 244000063299 Bacillus subtilis Species 0.000 claims description 5
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 5
- 240000007594 Oryza sativa Species 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 5
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 5
- 241000235342 Saccharomycetes Species 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 5
- 235000005822 corn Nutrition 0.000 claims description 5
- 238000000855 fermentation Methods 0.000 claims description 5
- 230000004151 fermentation Effects 0.000 claims description 5
- 235000013312 flour Nutrition 0.000 claims description 5
- 235000014655 lactic acid Nutrition 0.000 claims description 5
- 239000004310 lactic acid Substances 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 5
- 235000020232 peanut Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 235000015099 wheat brans Nutrition 0.000 claims description 5
- 244000060011 Cocos nucifera Species 0.000 claims description 4
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 4
- 240000003183 Manihot esculenta Species 0.000 claims description 4
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- 235000013405 beer Nutrition 0.000 claims description 4
- 239000010794 food waste Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 239000003480 eluent Substances 0.000 claims description 3
- 241001465754 Metazoa Species 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 238000003911 water pollution Methods 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000003674 animal food additive Substances 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 9
- 239000011573 trace mineral Substances 0.000 description 9
- 235000013619 trace mineral Nutrition 0.000 description 9
- 239000011651 chromium Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 201000010099 disease Diseases 0.000 description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 6
- 241000282412 Homo Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010015150 Erythema Diseases 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 206010022971 Iron Deficiencies Diseases 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010033733 Papule Diseases 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 210000000436 anus Anatomy 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 210000004392 genitalia Anatomy 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000007233 immunological mechanism Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material 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
- C02F1/001—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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
-
- 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
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)
- Fodder In General (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410815069.XA CN104556570B (en) | 2014-12-25 | 2014-12-25 | Method for utilizing zinc ions in zinc industrial wastewater resources |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410815069.XA CN104556570B (en) | 2014-12-25 | 2014-12-25 | Method for utilizing zinc ions in zinc industrial wastewater resources |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104556570A true CN104556570A (en) | 2015-04-29 |
CN104556570B CN104556570B (en) | 2017-01-11 |
Family
ID=53073768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410815069.XA Expired - Fee Related CN104556570B (en) | 2014-12-25 | 2014-12-25 | Method for utilizing zinc ions in zinc industrial wastewater resources |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104556570B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104961193A (en) * | 2015-07-19 | 2015-10-07 | 长春黄金研究院 | Separation method of zinc cyanide complex ions |
CN108794105A (en) * | 2017-04-28 | 2018-11-13 | 唐健发 | A kind of resource utilization method of zinc-containing water |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108794104A (en) * | 2017-04-28 | 2018-11-13 | 唐健发 | A kind of ecological utilization method of potassium sewage |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT123590B (en) * | 1928-06-04 | 1931-06-25 | Leopold Geyer | Control device on spring-loaded vehicles against external tilting when taking a bow. |
JPS62152590A (en) * | 1985-12-27 | 1987-07-07 | Jiyunsui Service:Kk | Treatment of zinc waste water |
ATA123590A (en) * | 1990-06-06 | 1994-04-15 | Erber Erich Ing | FEED ADDITIVE AND METHOD FOR THE PRODUCTION THEREOF |
CN102084931A (en) * | 2009-12-04 | 2011-06-08 | 滨州市正元畜牧发展有限公司 | Method for preparing organic zinc enzyme preparation |
CN102126801A (en) * | 2011-02-17 | 2011-07-20 | 江门市崖门新财富废水处理有限公司 | Process and equipment for treating waste water containing copper, nickel, zinc and other heavy metal ions |
CN102342371A (en) * | 2011-09-01 | 2012-02-08 | 安徽金农惠民生物技术有限公司 | Process for preparing compound feed additive from bacillus subtilis natto and bacillus licheniformis |
CN103951127A (en) * | 2014-04-23 | 2014-07-30 | 苏州羽帆新材料科技有限公司 | Method for treating galvanization sewage |
CN104129831A (en) * | 2014-07-29 | 2014-11-05 | 南京大学 | Method for simultaneous removal and recovery of heavy metal ions and organic acid by using chelating resin |
-
2014
- 2014-12-25 CN CN201410815069.XA patent/CN104556570B/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT123590B (en) * | 1928-06-04 | 1931-06-25 | Leopold Geyer | Control device on spring-loaded vehicles against external tilting when taking a bow. |
JPS62152590A (en) * | 1985-12-27 | 1987-07-07 | Jiyunsui Service:Kk | Treatment of zinc waste water |
ATA123590A (en) * | 1990-06-06 | 1994-04-15 | Erber Erich Ing | FEED ADDITIVE AND METHOD FOR THE PRODUCTION THEREOF |
CN102084931A (en) * | 2009-12-04 | 2011-06-08 | 滨州市正元畜牧发展有限公司 | Method for preparing organic zinc enzyme preparation |
CN102126801A (en) * | 2011-02-17 | 2011-07-20 | 江门市崖门新财富废水处理有限公司 | Process and equipment for treating waste water containing copper, nickel, zinc and other heavy metal ions |
CN102342371A (en) * | 2011-09-01 | 2012-02-08 | 安徽金农惠民生物技术有限公司 | Process for preparing compound feed additive from bacillus subtilis natto and bacillus licheniformis |
CN103951127A (en) * | 2014-04-23 | 2014-07-30 | 苏州羽帆新材料科技有限公司 | Method for treating galvanization sewage |
CN104129831A (en) * | 2014-07-29 | 2014-11-05 | 南京大学 | Method for simultaneous removal and recovery of heavy metal ions and organic acid by using chelating resin |
Non-Patent Citations (1)
Title |
---|
张翠霞: "固态发酵工程与生物饲料添加剂的生产", 《微生物学》, vol. 23, no. 6, 30 November 2003 (2003-11-30) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104961193A (en) * | 2015-07-19 | 2015-10-07 | 长春黄金研究院 | Separation method of zinc cyanide complex ions |
CN108794105A (en) * | 2017-04-28 | 2018-11-13 | 唐健发 | A kind of resource utilization method of zinc-containing water |
Also Published As
Publication number | Publication date |
---|---|
CN104556570B (en) | 2017-01-11 |
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C41 | Transfer of patent application or patent right or utility model | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20160927 Address after: Qingxiu District Dong Ge road Nanning 530000 the Guangxi Zhuang Autonomous Region No. 1118 Nanning Wanda Plaza Green Building No. 3802 West 1 Applicant after: GUANGXI NANNING ZHICUI TECHNOLOGY CONSULTING CO., LTD. Address before: 530022 Nanning National Road, the Guangxi Zhuang Autonomous Region, No. 89 Applicant before: Chen Cheng Applicant before: Li Hongmei Applicant before: Luo Yongcheng |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
CB03 | Change of inventor or designer information |
Inventor after: Liang Yingqiang Inventor before: Chen Cheng Inventor before: Li Hongmei Inventor before: Luo Yongcheng |
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COR | Change of bibliographic data | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170216 Address after: 527300 stone in Guangdong province Yunfu City Expo Center Patentee after: Yunfu stone Research Institute Address before: Qingxiu District Dong Ge road Nanning 530000 the Guangxi Zhuang Autonomous Region No. 1118 Nanning Wanda Plaza Green Building No. 3802 West 1 Patentee before: GUANGXI NANNING ZHICUI TECHNOLOGY CONSULTING CO., LTD. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20171225 |
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CF01 | Termination of patent right due to non-payment of annual fee |