CN105523668B - 一种pcb含氨氮废水零排放处理方法及装置 - Google Patents
一种pcb含氨氮废水零排放处理方法及装置 Download PDFInfo
- Publication number
- CN105523668B CN105523668B CN201510890376.9A CN201510890376A CN105523668B CN 105523668 B CN105523668 B CN 105523668B CN 201510890376 A CN201510890376 A CN 201510890376A CN 105523668 B CN105523668 B CN 105523668B
- Authority
- CN
- China
- Prior art keywords
- water
- etching
- nitrogen
- ultrafiltration
- filtrate
- 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.)
- Active
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 208000028659 discharge Diseases 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000005530 etching Methods 0.000 claims abstract description 40
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 29
- 238000005406 washing Methods 0.000 claims abstract description 28
- 239000000460 chlorine Substances 0.000 claims abstract description 26
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 20
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims abstract description 14
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000000706 filtrate Substances 0.000 claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 26
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 241000370738 Chlorion Species 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 229910001431 copper ion Inorganic materials 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 10
- 231100000719 pollutant Toxicity 0.000 description 10
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 229910052719 titanium Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 6
- 238000010979 pH adjustment Methods 0.000 description 5
- 229910000929 Ru alloy Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical compound [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- UUWCBFKLGFQDME-UHFFFAOYSA-N platinum titanium Chemical compound [Ti].[Pt] UUWCBFKLGFQDME-UHFFFAOYSA-N 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000009615 deamination Effects 0.000 description 2
- 238000006481 deamination reaction Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- RECVMTHOQWMYFX-UHFFFAOYSA-N oxygen(1+) dihydride Chemical compound [OH2+] RECVMTHOQWMYFX-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- -1 that is Substances 0.000 description 1
- 239000003403 water pollutant 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
污染物 | 浓度(mg/L) |
NH3-N | 400~40000 |
Cu2+ | 100~10000 |
Cl- | >20000 |
pH | 10~12 |
污染物 | 浓度(mg/L) |
NH3-N | <10 |
Cu2+ | <3 |
Cl- | <20000 |
pH | 6~11 |
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510890376.9A CN105523668B (zh) | 2015-12-04 | 2015-12-04 | 一种pcb含氨氮废水零排放处理方法及装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510890376.9A CN105523668B (zh) | 2015-12-04 | 2015-12-04 | 一种pcb含氨氮废水零排放处理方法及装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105523668A CN105523668A (zh) | 2016-04-27 |
CN105523668B true CN105523668B (zh) | 2018-04-13 |
Family
ID=55766250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510890376.9A Active CN105523668B (zh) | 2015-12-04 | 2015-12-04 | 一种pcb含氨氮废水零排放处理方法及装置 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105523668B (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106006856A (zh) * | 2016-07-11 | 2016-10-12 | 苏州美源达环保科技股份有限公司 | 一种电解催化氧化法处理氨性氯化铜废水中氨氮的*** |
CN108249637A (zh) * | 2016-12-29 | 2018-07-06 | 深圳安吉尔饮水产业集团有限公司 | 电解软水***和*** |
CN107010729B (zh) * | 2017-06-05 | 2022-08-19 | 济南大学 | 一种气水异向流渐变式全程自养脱氮***及其处理方法 |
CN108101163B (zh) * | 2017-12-21 | 2020-11-03 | 衢州华友钴新材料有限公司 | 一种从工业废水中回收有价金属并降氨氮及cod的方法 |
CN108996619A (zh) * | 2018-08-23 | 2018-12-14 | 广东海瑞环保科技有限公司 | Pcb含氨氮废水处理***及其处理方法 |
CN109650495A (zh) * | 2019-01-28 | 2019-04-19 | 中南大学 | 一种含氨氮、磷废水的处理装置及方法 |
CN110040887A (zh) * | 2019-05-10 | 2019-07-23 | 四川省科源工程技术测试中心 | 一种有机废液处理方法及装置 |
CN110453225B (zh) * | 2019-08-29 | 2021-07-30 | 深圳市祺鑫环保科技有限公司 | 酸性蚀刻废液的处理方法 |
CN110746010A (zh) * | 2019-11-07 | 2020-02-04 | 深圳市臻鼎环保科技有限公司 | 一种采用电解法处理高氨氮废水的方法 |
CN112225302A (zh) * | 2020-08-31 | 2021-01-15 | 金禄电子科技股份有限公司 | 氨氮废水处理方法和*** |
CN113200635B (zh) * | 2021-06-17 | 2022-05-10 | 徐鸿顺 | 一种电路板蚀刻废水处理装置及方法 |
CN113955830A (zh) * | 2021-10-18 | 2022-01-21 | 苏州美源达环保科技股份有限公司 | 一种协同处理含铜废水与氨氮废水的设备 |
CN117865287B (zh) * | 2024-03-11 | 2024-05-24 | 上海汲隆水务科技有限公司 | 一种高氨氮有机废水深度脱氮用除氮装置及脱氮方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4107674B2 (ja) * | 2005-03-28 | 2008-06-25 | 将 中嶋 | 洗浄液の製造方法および製造装置 |
CN101125719B (zh) * | 2007-07-13 | 2011-02-09 | 深圳市中冠环保科技有限公司 | 印刷电路酸性蚀刻废液回收盐酸及金属铜的方法 |
WO2011150532A1 (en) * | 2010-06-03 | 2011-12-08 | Kuttler Automation Systems (Suzhou) Co., Ltd. | System and method for recovering spent etching solution |
CN102120668A (zh) * | 2010-09-26 | 2011-07-13 | 东南大学 | 印刷线路板综合废水资源化利用方法 |
CN103523977A (zh) * | 2012-07-03 | 2014-01-22 | 库特勒自动化***(苏州)有限公司 | 印刷板蚀刻废液处理***和方法 |
CN203079779U (zh) * | 2013-01-30 | 2013-07-24 | 张强华 | Pcb废液环保化回收处理*** |
CN104711636B (zh) * | 2015-02-11 | 2018-09-25 | 昆山市益民环保技术开发有限公司 | 印刷电路板酸性蚀刻废液处理方法 |
CN205442898U (zh) * | 2015-12-04 | 2016-08-10 | 陈丽珊 | 一种用于pcb含氨氮废水零排放处理的装置 |
-
2015
- 2015-12-04 CN CN201510890376.9A patent/CN105523668B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN105523668A (zh) | 2016-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105523668B (zh) | 一种pcb含氨氮废水零排放处理方法及装置 | |
CN103466852B (zh) | 一种污泥减量化的硝基甲苯生产废水电催化还原氧化预处理方法 | |
CN205442898U (zh) | 一种用于pcb含氨氮废水零排放处理的装置 | |
CN111560615B (zh) | 一种酸性蚀刻废液在线回收铜、氯气及蚀刻液再生的方法 | |
CN106929857A (zh) | 含铜酸性蚀刻液循环再生回用设备及方法 | |
CN110921785B (zh) | 一种电过滤催化过硫酸盐水处理设备及利用其处理水的方法 | |
CN111115761A (zh) | 一种用于同步去除电镀废水中总氮的电化学反应装置及方法 | |
CN110422948A (zh) | 电镀硫酸铜废水回收金属铜处理工艺 | |
Zhang et al. | Recovery of phosphorus and metallic nickel along with HCl production from electroless nickel plating effluents: The key role of three-compartment photoelectrocatalytic cell system | |
CN110668614B (zh) | 电催化氧化结合电磁复合材料处理蚀刻废液的方法 | |
CN110683617A (zh) | 基于差别化控制的废水成对电解处理的方法 | |
CN115432870B (zh) | 一种针对高氨氮或硝态氮废水的电化学回收氨的***及方法 | |
CN112897771B (zh) | 一种稀土冶炼废水的处理装置及其处理方法 | |
CN109775817A (zh) | 一种电化学氨氮消解装置及消解方法 | |
CN103290415A (zh) | 酸性蚀刻液的处理工艺及*** | |
CN210559900U (zh) | 一种化学镍废水电催化氧化处理*** | |
CN108624900B (zh) | 一种以废液煤浆电解制氢的方法 | |
CN203613055U (zh) | 高盐高氯废水处理装置 | |
CN208517154U (zh) | 盐碱废水的处理*** | |
CN112830553A (zh) | 同步电催化氧化-还原降解反应器及处理膜滤浓缩液的方法 | |
CN201665596U (zh) | 一种焦化废水回用的预处理装置及组合处理*** | |
CN215627329U (zh) | 一种电路板蚀刻废水处理装置 | |
CN113200635B (zh) | 一种电路板蚀刻废水处理装置及方法 | |
CN216039065U (zh) | 一种eod生产装置废水预处理*** | |
CN114735863B (zh) | 一种针对后期垃圾渗滤液的处理方法与*** |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20181106 Address after: 519180 1-3, 7 floor, No. 11, new building two, Jing'an Road, Jing'an Town, Doumen District, Zhuhai, Guangdong, China Patentee after: Zhuhai Huatai environmental protection Polytron Technologies Inc Address before: 519000 5A 20, 449 Chang Gang Road, Xiangzhou District, Zhuhai, Guangdong. Co-patentee before: Li Hong Patentee before: Chen Lishan Co-patentee before: Hou Yanhui Co-patentee before: Wang Weiliang |
|
PP01 | Preservation of patent right | ||
PP01 | Preservation of patent right |
Effective date of registration: 20210823 Granted publication date: 20180413 |