CN206624743U - Liquid crystal panel advanced waste treatment apparatus - Google Patents
Liquid crystal panel advanced waste treatment apparatus Download PDFInfo
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- CN206624743U CN206624743U CN201720188041.7U CN201720188041U CN206624743U CN 206624743 U CN206624743 U CN 206624743U CN 201720188041 U CN201720188041 U CN 201720188041U CN 206624743 U CN206624743 U CN 206624743U
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- pond
- organic
- liquid crystal
- crystal panel
- treatment apparatus
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 18
- 239000002699 waste material Substances 0.000 title claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 230000007062 hydrolysis Effects 0.000 claims abstract description 18
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000001728 nano-filtration Methods 0.000 claims abstract description 9
- 239000010865 sewage Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000005189 flocculation Methods 0.000 claims abstract description 5
- 230000016615 flocculation Effects 0.000 claims abstract description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000012510 hollow fiber Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 21
- 239000003344 environmental pollutant Substances 0.000 abstract description 7
- 231100000719 pollutant Toxicity 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 7
- 244000005700 microbiome Species 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910001431 copper ion Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Substances [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 3
- HADKRTWCOYPCPH-UHFFFAOYSA-M trimethylphenylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C1=CC=CC=C1 HADKRTWCOYPCPH-UHFFFAOYSA-M 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 235000012489 doughnuts Nutrition 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000001477 organic nitrogen group Chemical group 0.000 description 2
- 125000001741 organic sulfur group Chemical group 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The utility model belongs to environmental technology field, it is related to a kind of liquid crystal panel advanced waste treatment apparatus, including inorganic processing section and organic process section, inorganic processing section includes the inorganic regulating reservoir being sequentially connected, reaction tank, flocculation basin and high-efficiency clarifier, organic process section includes the organic regulating reservoir being sequentially connected, hydrolyze anaerobic pond, anoxic pond, Aerobic Pond, MBR membrane cisternas, cartridge filter, nanofiltration membrane separation device and Treated sewage reusing pond, high-efficiency clarifier water outlet is pumped into hydrolysis anaerobic pond, organic regulating reservoir water outlet is pumped into hydrolysis anaerobic pond and anoxic pond simultaneously, anoxic pond local return is to hydrolyzing anaerobic pond, Aerobic Pond local return is to anoxic pond, MBR membrane cisternas local return is to Aerobic Pond.Present apparatus processing load is especially big, and gained reclaimed water is better than III class water, and caused sludge quantity is few, and sludge bulking does not occur；And in the case where pollutant organic loading is low, reach operational excellence, equipment simple installation, the advantages that repair and maintenance is easy.
Description
Technical field
Environmental technology field is the utility model is related to, more particularly to a kind of liquid crystal panel advanced waste treatment apparatus.
Background technology
Liquid crystal electron industrial trade is heavy polluted industry, and its production process is complicated, is related to miscellaneous chemistry
Product, technique waste water, waste liquid species are relatively more caused by each operation, and sewage composition is complicated, and liquid crystal electron waste water includes inorganic wastewater
And organic wastewater, the major pollutants in inorganic wastewater are fluoride, heavy metal copper ion, phosphate etc., in organic wastewater
Major pollutants are the recalcitrant substances such as organic nitrogen, organic sulfur, macromolecule, also containing certain density quaternary ammonium salt, TMAH
(TMAH) etc. has the material of strong inhibition effect or excellent bactericidal property, its COD (chemical oxygen demand to microorganism
Amount), ammonia nitrogen and total nitrogen concentration it is high, pH fluctuation ranges are big.
There are chemical coagulation-sedimentation method, biological contact oxidation process, ion currently for liquid crystal panel Sewage advanced treatment technology
Exchange adsorption method, membrane separation process, ozone and activated carbon method etc., as national new environmental law is put into effect, to enterprise's waste discharge water quality
It is required that more and more higher, in order to reduce gross contamination emission, saving water resource, terminal water outlet requires reuse, and reuse water quality will reach
Arrive《Water environment quality standard》(GB3838-2002) IV class water quality standard, enterprise is according to original conventional processing device, it is difficult to
Reach high standard Treated sewage reusing standard.
Therefore, it is necessary to a kind of new treatment technology is provided to avoid problem above.
Utility model content
Main purpose of the present utility model is to provide a kind of liquid crystal panel advanced waste treatment apparatus.
The utility model is achieved through the following technical solutions above-mentioned purpose：A kind of liquid crystal panel advanced waste treatment apparatus,
Including inorganic processing section and organic process section, inorganic processing section include be sequentially connected inorganic regulating reservoir, reaction tank, flocculation basin and
High-efficiency clarifier, organic process section include organic regulating reservoir, hydrolysis anaerobic pond, anoxic pond, Aerobic Pond, the MBR films being sequentially connected
Pond, cartridge filter, nanofiltration membrane separation device and Treated sewage reusing pond, high-efficiency clarifier water outlet is pumped into hydrolysis anaerobic pond, organic
Regulating reservoir water outlet is pumped into hydrolysis anaerobic pond and anoxic pond simultaneously, and anoxic pond local return is locally returned to anaerobic pond, Aerobic Pond is hydrolyzed
It flow to anoxic pond, MBR membrane cisternas local return to Aerobic Pond.
Specifically, it is provided with boring aeration pipe in the inorganic regulating reservoir.
Specifically, it is provided with boring aeration pipe in organic regulating reservoir.
Specifically, the hydrolysis anaerobic pond is disposed with collapsible biologic packing material.
Further, the collapsible biologic packing material material is plastics, specific surface area >=200m of filler2/m3, filling rate
25%.
Specifically, the MBR films are doughnut pvdf membrane, membrane aperture is 0.1 μm.
Specifically, the NF membrane is polyamide composite nanofiltration membrane, aperture 1nm.
Using above-mentioned technical proposal, the beneficial effect of technical solutions of the utility model is：
Present apparatus processing load is especially big, and CODcr, BOD5, N, P clearance are high, and gained reclaimed water is better than《Surface water environment matter
Amount standard》(GB3838-2002) III class water, caused sludge quantity is few, and sludge bulking does not occur；It is and low in pollutant organic loading
In the case of, reach operational excellence, equipment simple installation, the advantages that repair and maintenance is easy.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model liquid crystal panel advanced waste treatment apparatus.
Numeral represents in figure：
The inorganic regulating reservoirs of 11-,
12- reaction tanks,
13- flocculation basins,
14- high-efficiency clarifiers；
The organic regulating reservoirs of 21-,
22- hydrolyzes anaerobic pond,
23- anoxic ponds,
24- Aerobic Ponds,
25-MBR membrane cisternas,
26- cartridge filters,
27- nanofiltration membrane separation devices,
28- Treated sewage reusings pond.
Embodiment
The utility model is described in further detail with reference to specific embodiment.
As shown in figure 1, a kind of liquid crystal panel advanced waste treatment apparatus, including inorganic processing section and organic process section, nothing
Machine processing section includes inorganic regulating reservoir 11, reaction tank 12, flocculation basin 13 and the high-efficiency clarifier 14 being sequentially connected, organic process section
Including be sequentially connected organic regulating reservoir 21, hydrolysis anaerobic pond 22, anoxic pond 23, Aerobic Pond 24, MBR membrane cisternas 25, security personnel filtering
Device 26, nanofiltration membrane separation device 27 and Treated sewage reusing pond 28, the water outlet of high-efficiency clarifier 14 are pumped into hydrolysis anaerobic pond 22, organic tune
The section water outlet of pond 21 is pumped into hydrolysis anaerobic pond 22 and anoxic pond 23 simultaneously, and the local return of anoxic pond 23 is aerobic to hydrolysis anaerobic pond 22
The local return of pond 24 is to anoxic pond 23, the local return of MBR membrane cisternas 25 to Aerobic Pond 24.
The processing unit application method is as follows：
1. inorganic wastewater (major pollutants are fluoride, heavy metal copper ion, phosphate etc.) enters inorganic regulating reservoir 11
(bottom arranges that boring aeration pipe mixes for waste water) regulating water quality water, water outlet enters reaction tank 12, by adding hydroxide
Calcium regulation pH is 8.5, adds calcium chloride, aluminium polychloride, polyacrylamide, and mud-water separation is carried out into high-efficiency clarifier 14,
Remove fluoride, copper ion water outlet；
2. organic wastewater (major pollutants be the recalcitrant substance such as organic nitrogen, organic sulfur, macromolecule, quaternary ammonium salt,
TMAH etc.) enter organic regulating reservoir 21 (bottom arranges that boring aeration pipe mixes for waste water), by adding sodium hydroxide or sulphur
Acid for adjusting pH is 8.
3. inorganic wastewater and organic wastewater, after above-mentioned processing, water outlet enters hydrolysis anaerobic pond 22, hydrolyzes anaerobic pond 22
Middle arrangement hanging type plastic biologic packing material, by hydrolysis acidification Anaerobic treatment technique, turn the organic macromolecule of difficult degradation
Degradable organic molecule is turned to, improves wastewater biochemical, BOD/COD is improved to 0.3 from 0.15.Technological parameter：Hydrolysis is detested
Oxygen pond 22 load 0.8kgBOD/m3.d, sludge concentration 3500mg/L, provided with single sludge recirculation system, reflux ratio 30%, water
8 hours power residence times.
(roused 4. the water outlet 50% of hydrolysis anaerobic pond 22 enters anoxic pond 23 and 50% into Aerobic Pond 24 by frequency conversion magnetic levitation
Blower fan supplies oxygen), control anoxic end DO is less than 0.5mg/L, and aerobic end DO is 2mg/L, technological parameter：During 23 hydraulic retention of anoxic pond
Between 7 hours, denitrification load 0.02kgNO3-N/kgMLVSS.d, sludge concentration 4500mg/L, the hydraulic detention time of Aerobic Pond 24
15 hours, sludge loading 0.194kg BOD5/ kgMLSS.d, sludge concentration 5500mg/L, gas-water ratio 23:1, mainly remove organic
Thing, total nitrogen, ammonia nitrogen.
5. the water outlet of Aerobic Pond 24 enters MBR membrane cisternas 25, MBR films are doughnut pvdf membrane, and membrane aperture is 0.1 micron, is put down
Equal membrane flux be 18.3LMH, and the activated sludge concentration of MBR membrane cisternas 25 is 8000-12000mg/L, dissolved oxygen 2mg/L, and PLC is controlled
Fully automatic operation processed, the technological parameter of MBR membrane cisternas 25 are as follows：Sludge concentration 8000mg/L, return sludge ratio 400%.
6. the water outlet of MBR membrane cisternas 25 enters cartridge filter 26, aperture is 5 μm, and water outlet enters nanofiltration membrane separation device 27, receives
Filter membrane is polyamide composite nanofiltration membrane, aperture 1nm, the system rate of recovery >=80%, the control of system salt rejection rate >=95%, PLC entirely from
Dynamic operation, water outlet pass through hypochlorite disinfectant, control chlorine residue 0.3mg/L.
MBR membrane cisternas 25 can organically combine activated sludge process and membrane separation technique.Membrane separation process substitutes traditional activated dirt
Second pond in mud method, the microorganism that biological treatment is relied on are separated from bio-culture solution, and microorganism is able to
Remain, while ensure in water outlet substantially free of microorganism and other suspensions in high concentration in biochemical reaction tank.By
Efficient separation of solid and liquid can be carried out in membrane module, overcomes that effluent quality in traditional handicraft is not sufficiently stable, sludge easily expands
The deficiencies of, so as to have following advantages：
1. efficiently carrying out separation of solid and liquid, capacity of resisting impact load is strong, effluent quality high-quality stable, can remove completely
SS, also there is good rejection effect to bacterium and virus, water outlet can direct reuse；
2. due to the efficient crown_interception of film, microorganism can be made to be completely trapped in bioreactor, realize reactor water
Power residence time (HRT) and sludge age (SRT's) is kept completely separate, and makes operation control more flexibly stable；
3. bioreactor interior energy maintains the microbial biomass of high concentration, up to more than 8000--12000mg/L, processing dress
Volumetric loading height is put, floor space may decrease to 1/3 to the 1/5 of traditional activated sludge process,
4. being advantageous to breed the retention and growth of slow microorganism such as nitrobacteria, system nitrification efficiency is improved.
Also the hydraulic detention time of some hardly degraded organic substances in systems can be increased, will effectively decompose micro- life of hardly degraded organic substance
Thing is trapped in MBR membrane cisternas, is advantageous to the raising of hardly degraded organic substance degradation efficiency；
5. MBR is run under low sludge loading, excess sludge production is low, reduces Treatment of Sludge expense.
Water quality index is as follows before and after the processing for each step：
Present apparatus processing load is especially big, and CODcr, BOD5, N, P clearance are high, and gained reclaimed water is better than《Surface water environment matter
Amount standard》(GB3838-2002) III class water, caused sludge quantity is few, and sludge bulking does not occur；It is and low in pollutant organic loading
In the case of, reach operational excellence, equipment simple installation, the advantages that repair and maintenance is easy.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this practicality
New protection domain.
Claims (7)
1. a kind of liquid crystal panel advanced waste treatment apparatus, including inorganic processing section and organic process section, it is characterised in that：It is inorganic
Processing section includes inorganic regulating reservoir, reaction tank, flocculation basin and the high-efficiency clarifier being sequentially connected, and organic process section includes connecting successively
Organic regulating reservoir for connecing, hydrolysis anaerobic pond, anoxic pond, Aerobic Pond, MBR membrane cisternas, cartridge filter, nanofiltration membrane separation device and
Treated sewage reusing pond, high-efficiency clarifier water outlet are pumped into hydrolysis anaerobic pond, and organic regulating reservoir water outlet is pumped into hydrolysis anaerobic pond and lacked simultaneously
Oxygen pond, anoxic pond local return is to hydrolyzing anaerobic pond, Aerobic Pond local return to anoxic pond, and MBR membrane cisternas local return is to aerobic
Pond.
2. liquid crystal panel advanced waste treatment apparatus according to claim 1, it is characterised in that：In the inorganic regulating reservoir
Provided with boring aeration pipe.
3. liquid crystal panel advanced waste treatment apparatus according to claim 1, it is characterised in that：In organic regulating reservoir
Provided with boring aeration pipe.
4. liquid crystal panel advanced waste treatment apparatus according to claim 1, it is characterised in that：The hydrolysis anaerobic pond cloth
It is equipped with collapsible biologic packing material.
5. liquid crystal panel advanced waste treatment apparatus according to claim 4, it is characterised in that：The collapsible biology is filled out
Material material is plastics, specific surface area >=200m of filler2/m3, filling rate 25%.
6. liquid crystal panel advanced waste treatment apparatus according to claim 1, it is characterised in that：The MBR films are hollow
Fiber PVDF membrane, membrane aperture are 0.1 μm.
7. liquid crystal panel advanced waste treatment apparatus according to claim 1, it is characterised in that：The NF membrane is polyamides
Amine composite nanofiltration membrane, aperture 1nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188041.7U CN206624743U (en) | 2017-02-28 | 2017-02-28 | Liquid crystal panel advanced waste treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720188041.7U CN206624743U (en) | 2017-02-28 | 2017-02-28 | Liquid crystal panel advanced waste treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206624743U true CN206624743U (en) | 2017-11-10 |
Family
ID=60210905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720188041.7U Expired - Fee Related CN206624743U (en) | 2017-02-28 | 2017-02-28 | Liquid crystal panel advanced waste treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206624743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249704A (en) * | 2018-02-01 | 2018-07-06 | 无锡深南电路有限公司 | The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board |
-
2017
- 2017-02-28 CN CN201720188041.7U patent/CN206624743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249704A (en) * | 2018-02-01 | 2018-07-06 | 无锡深南电路有限公司 | The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board |
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| GR01 | Patent grant | ||
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Granted publication date: 20171110 |