CN205222888U - Lose waste liquid treatment device a little - Google Patents
Lose waste liquid treatment device a little Download PDFInfo
- Publication number
- CN205222888U CN205222888U CN201520924770.5U CN201520924770U CN205222888U CN 205222888 U CN205222888 U CN 205222888U CN 201520924770 U CN201520924770 U CN 201520924770U CN 205222888 U CN205222888 U CN 205222888U
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- CN
- China
- Prior art keywords
- groove
- subsider
- cell body
- electrodialysis
- electrolyzer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model discloses a lose waste liquid treatment device a little, including losing cistern, subsider, centrifugal separator, clear solution groove, solid fluid bowl, salt bath, alkali groove, electrodialysis groove, acid tank, copper cistern, electrolysis trough, rectifier, support, automatically controlled cabinet, process line, pumping a little, the support is equipped with upper and lower layer, and the upper strata is equipped with subsider, electrodialysis groove, rectifier and electrolysis trough, the lower floor is equipped with salt bath, alkali groove, acid tank and copper cistern, the support outside is equipped with centrifugal separator, clear solution groove and solid fluid bowl, be equipped with the agitator in the subsider, be equipped with the pumping in clear solution groove, solid fluid bowl, salt bath, alkali groove, acid tank and the copper cistern, automatically controlled cabinet is connected with agitator, pumping, centrifugal separator, valves, electrolysis trough, electrodialysis groove, rectifier electric signal, this novel adoption is subsided, separation, electrodialysis, electrolysis complete sets, and the optimal design is handled and is lost the waste liquid a little, solves the emission problem, and economic benefits is high, has really realized economic environmental protection discharge to reach standard's target.
Description
Technical field
The utility model relates to a kind of PCB manufacturing technology apparatus field, particularly a kind of micro-etched waste liquid treatment unit.
Background technology
In PCB industry, in PCB Production, the pre-treatment of many operations all needs microetch, and the effect of microetch is the surface forming micro-rough on layers of copper surface, to strengthen the bonding force with copper coating.Not only environmental pollution can be avoided to the regeneration of waste liquid, then the acid of bearing and copper also can create more economic benefit for enterprise.
Although in prior art, there are many micro-etched waste liquid treatment technologies, viewed from energy consumption and the aspect such as environmental protection and processing efficiency, had respective relative merits; But effective technological method is lacked really for the disposal and utilization of micro-etched waste liquid.Current micro-etched waste liquid is difficult to process, process approach mainly contains two kinds: the first is wiring board factory, and general manufacturer directly can be discharged into sewage lagoon micro-etching solution, then adds a large amount of alkali lye and carries out neutralization reaction, production copper sludge precipitates, and this is traditional processing mode; The second is that flower part expense transfers to waste plant process, acidic and alkaline waste etching solution the placing of normally arranging in pairs or groups, and reason is that independent micro-etched waste liquid copper content is low, and processing cost is high, and liquid medicine reclaims business and substantially do not purchase separately; Shortcoming/the deficiency of the treatment technology of micro-etched waste liquid is caused to be: 1. Sewage Plant is carried out neutralization reaction and can be produced a large amount of high density chemical waste fluid, needs secondary treatment, and is difficult to the standard reaching environment protection emission; 2. transfer to liquid medicine to reclaim business's process, a part of expense need be spent, and the requirement of economic environmental emission reduction can not be realized; 3. cause Direct Electrolysis energy consumption very large because copper ion concentration in micro-etching solution is low, electrolysis is simultaneously incomplete.Waste liquid after electrolysis can not reach emission standard, still needs subsequent disposal, such as adds flocculation agent etc.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of micro-etched waste liquid treatment unit, for deficiency of the prior art, adopt sedimentation, separation, electrodialysis, be electrolyzed to produce complete equipment, micro-etched waste liquid is focused on by optimization design, both can solve the problem of micro-etched waste liquid discharge, and considerable economic benefit can have been brought again, really achieve the target of economic environment protection emission.
For achieving the above object, the technical solution of the utility model is as follows: a kind of micro-etched waste liquid treatment unit, comprise microetch liquid bath, subsider, whizzer, clear liquid groove, solid solution groove, salt bath, alkali groove, electrodialysis cell, acid tank, copper liquid bath, electrolyzer, rectifier, support, electrical control cubicles, process pipe, pumping, it is characterized in that:
Described Bracket setting has the upper and lower, and upper strata is connected with subsider, electrodialysis cell, rectifier and electrolyzer by process pipe; Lower floor is connected with salt bath, alkali groove, acid tank and copper liquid bath by process pipe; Described bracket outer is connected with whizzer, clear liquid groove and solid solution groove by process pipe, agitator is equipped with in described subsider, pumping is equipped with in described clear liquid groove, solid solution groove, salt bath, alkali groove, acid tank and copper liquid bath, described process pipe is provided with control valve group, described bracket outer is provided with electrical control cubicles, and described electrical control cubicles is connected with agitator, pumping, whizzer, valve group, electrolyzer, electrodialysis cell, rectifier electric signal; Described subsider top is provided with micro-etched waste liquid entrance, and is communicated with microetch liquid bath.
Described micro-etched waste liquid treatment unit is provided with four functional sections, stirring → separation → electrodialysis → electrolysis; Described microetch liquid bath, subsider, clear liquid groove, solid solution groove, salt bath, alkali groove, electrodialysis cell, acid tank, copper liquid bath, electrolyzer, process pipe all adopt PP material welding manufacture, described rectifier, whizzer, electrical control cubicles and pumping are standardized component, be equipped with electrolyzer in electrolyzer, in electrodialysis cell, be equipped with electrodialytic membranes group.
Described subsider is square cell body, is provided with stirring motor, liquid-inlet pipe, drain pipe, and described liquid-inlet pipe is in subsider cell body top, and described drain pipe is in subsider cell body bottom; Described salt bath and alkali groove are the square cell body that integral type is arranged, and be made up of, be positioned at subsider and electrodialysis cell bottom, the side of acid tank two horizontal pumpings and cell body; Described acid tank is square cell body, is made up of, is positioned at electrodialysis cell bottom, between alkali groove and copper liquid bath a horizontal pumping and cell body; Described copper liquid bath is square cell body, is made up of, is positioned at below electrolyzer, the side of acid tank a pumping and cell body; Described clear liquid groove, solid solution groove are square identical cell body, are positioned at whizzer side side by side, are made up of pneumatic pump and cell body; Described electrolyzer is square cell body, and be made up of rectifier and cell body, mounted inside has battery lead plate, is positioned at directly over copper liquid bath; Described electrodialysis cell is square cell body, is made up of 6 little cell bodies and rectifier, is positioned at above salt bath and alkali groove, the side of subsider; Described rectifier is electrolyzer, electrodialysis cell integral part, and be electrolyzer, electrodialytic membranes group provides propulsion source; Be positioned at subsider and electrodialysis cell rear portion; Described electrical control cubicles is system control unit, and separated layout puts.
Principle of work of the present utility model is: described micro-etched waste liquid main ingredient is CuSO
415g/L, H
2sO
41mol/L, Na
2sO
4about 20g/L; Treatment system is mainly divided into four functional sections, stirring → separation → electrodialysis → electrolysis;
1, step one, micro-etched waste liquid is stored in micro-etching solution storage tank, and sent in the subsider be attached thereto by pumping, NaOH solution is imported by alkali groove, and following chemical reaction occurs under agitation:
CuSO
4++2NaOH→Cu(OH)
2+Na
2SO
4(1)
2, step 2, realizes solid-liquid separation through whizzer after reacting completely, containing Na
2sO
4centrifugal clear liquid import clear liquid groove; H is imported to whizzer by acid storage
2sO
4solution, dissolves the Cu (OH) in whizzer
2precipitation;
Cu(OH)
2+H
2SO
4→CuSO
4+2H
2O(2)
The H produced
2sO
4, CuSO
4mixed solution imports in copper liquid bath, realizes the concentrated of copper in micro-etched waste liquid thus and is separated;
3, step 3, the Na that step one obtains by the electrodialysis in described electrodialysis cell
2sO4 is regenerated as NaOH and H
2sO
4, react as follows;
Negative electrode: 2Na
++ 2H
2o+2e
-→ 2NaOH+H
2(3)
Anode: SO
4 2-+ H
2o – 2e
-→ H
2sO
4+ 1/2O
2(4)
4, step 4, H
2sO
4, CuSO
4mixed solution is cyclic electrolysis between copper liquid bath and electrolyzer, extracts copper coin, and realizes H
2sO
4regeneration, the anode of described electrolyzer is coated titanium, and negative electrode is pure titanium, and electrode surface generation chemical reaction is as follows;
Negative electrode; Cu
2++ 2e
-→ Cu (5)
Anode; SO
4 2-+ H
2o – 2e
-→ H
2sO
4+ 1/2O
2(4)
The sulfuric acid born again can repeat to use step 2 Cu (OH)
2in resolution of precipitate.
The utility model has following outstanding effect: 1. NaOH and H required for whole system
2sO
4be all transformed by micro-etched waste liquid obtained, add without any extra reagent; 2. to be separated concentrated copper more thorough for chemical precipitation method, disposablely makes copper ion concentration in centrifugate be down to emission standard; 3. electrolytic enrichment copper-containing solution efficiency is higher, and energy consumption is low; 4. the H that extra generation is unnecessary
2sO
4can be back to use on microetch production line, full processing procedure contamination-free produces.
Pass through technique scheme, the beneficial effect of technical solutions of the utility model is: adopt sedimentation, separation, electrodialysis, be electrolyzed to produce complete equipment, micro-etched waste liquid is focused on by optimization design, both the problem of micro-etched waste liquid discharge can have been solved, considerable economic benefit can be brought again, really achieve the target of economic environment protection emission; Copper content in micro-etched waste liquid is reduced to zero, and generate not containing heavy metal waste liquid, output high purity copper coin, brings direct economic benefit; Output high-concentration sulfuric acid, can for personal or sale.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of micro-etched waste liquid treatment unit schematic flow sheet disclosed in this new embodiment;
Fig. 2 is a kind of micro-etched waste liquid treatment unit front view schematic diagram disclosed in this new embodiment;
Fig. 3 is a kind of micro-etched waste liquid treatment unit vertical view schematic diagram disclosed in this new embodiment.
1 numeral and the corresponding component title represented by letter in figure:
1. microetch liquid bath 2. subsider 3. whizzer 4. clear liquid groove
5. solid solution groove 6. salt bath 7. alkali groove 8. electrodialysis cell
9. acid tank 10. bronze medal liquid bath 11. electrolyzer 12. rectifier
13. support 14. electrical control cubicles 15. process pipe 16. pumpings
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of micro-etched waste liquid treatment unit, comprises microetch liquid bath 1, subsider 2, whizzer 3, clear liquid groove 4, solid solution groove 5, salt bath 6, alkali groove 7, electrodialysis cell 8, acid tank 9, copper liquid bath 10, electrolyzer 11, rectifier 12, support 13, electrical control cubicles 14, process pipe 15, pumping 16.
Described support 13 is provided with the upper and lower, and upper strata is connected with subsider 2, electrodialysis cell 8, rectifier 12 and electrolyzer 11 by process pipe 15; Lower floor is connected with salt bath 6, alkali groove 7, acid tank 9 and copper liquid bath 10 by process pipe 15; Described support 13 outside is connected with whizzer 3, clear liquid groove 4 and solid solution groove 5 by process pipe 15, agitator is equipped with in described subsider 2, pumping 16 is equipped with in described clear liquid groove 4, solid solution groove 5, salt bath 6, alkali groove 7, acid tank 9 and copper liquid bath 10, described process pipe 15 is provided with control valve group, described support 13 outer setting has electrical control cubicles 14, and described electrical control cubicles 14 is connected with agitator, pumping 16, whizzer 3, valve group, electrolyzer 11, electrodialysis cell 8, rectifier 12 electric signal; Described subsider 2 top is provided with micro-etched waste liquid entrance, and is communicated with microetch liquid bath 1.
Described micro-etched waste liquid treatment unit is provided with four functional sections, stirring → separation → electrodialysis → electrolysis; Described microetch liquid bath 1, subsider 2, clear liquid groove 4, solid solution groove 5, salt bath 6, alkali groove 7, electrodialysis cell 8, acid tank 9, copper liquid bath 10, electrolyzer 11, process pipe 15 all adopt PP material welding manufacture, described rectifier 12, whizzer 3, electrical control cubicles 14 and pumping 16 are standardized component, be equipped with electrolyzer in electrolyzer 11, in electrodialysis cell 8, be equipped with electrodialytic membranes group.
Described subsider 2 is square cell body, is provided with stirring motor, liquid-inlet pipe, drain pipe, and described liquid-inlet pipe is in subsider 2 cell body top, and described drain pipe is in subsider 2 cell body bottom; The square cell body that described salt bath 6 and alkali groove 7 are arranged for integral type, is made up of two horizontal pumpings 16 and cell body, is positioned at subsider 2 and electrodialysis cell 8 bottom, the side of acid tank 9; Described acid tank 9 is square cell body, is made up of, is positioned at electrodialysis cell 8 bottom, between alkali groove 7 and copper liquid bath 10 a horizontal pumping 16 and cell body; Described copper liquid bath 10 is square cell body, is made up of a pumping 16 and cell body, is positioned at below electrolyzer 11, the side of acid tank 9; Described clear liquid groove 4, solid solution groove 5 are square identical cell body, are positioned at whizzer 3 side side by side, are made up of pneumatic pump and cell body; Described electrolyzer 11 is square cell body, and be made up of rectifier 12 and cell body, mounted inside has battery lead plate, is positioned at directly over copper liquid bath 10; Described electrodialysis cell 8 is square cell body, is made up of 6 little cell bodies and rectifier 12, is positioned at above salt bath 6 and alkali groove 7, the side of subsider 2; Described rectifier 12 is electrolyzer 11, electrodialysis cell 8 integral part, and be electrolyzer 11, electrodialytic membranes group provides propulsion source; Be positioned at subsider 2 and electrodialysis cell 8 rear portion; Described electrical control cubicles 14 is system control unit, and separated layout puts.
The utility model concrete operation step is: first collect micro-etched waste liquid in microetch liquid bath 1, send into subsider 2, the NaOH solution of massfraction 20% is imported by alkali groove 7, makes CuSO under agitation
4change Cu (OH) into
2precipitation; Described subsider 2 is connected with whizzer 3, and the solidliquid mixture after stirring imports whizzer 3 and carries out solid-liquid separation, containing 70g/LNa
2sO
4centrifugate enters clear liquid groove 4, imports H by acid tank 9 to whizzer 3
2sO
4solution, dissolves Cu (OH)
2precipitation; The H produced
2sO
4, CuSO
4(40g/L) mixed solution imports copper liquid bath 10; Described containing Na
2sO
4centrifugal clear liquid imports salt bath 6 by clear liquid groove 4; Electrodialytic membranes group unit is three chamber structures that zwitterion membrane sepn is opened, and wherein intermediate cavity is the Na of 70g/L
2sO
4solution, anode cavities is H
2sO
4, cathode cavity is NaOH solution; Na after the process of electrodialytic membranes group
2sO
4be converted into H
2sO
4and NaOH solution; H
2sO
4can supply the reuse of microetch production line, NaOH is for step one precipitated copper technique; Containing H
2sO
4, CuSO
4(40g/L) mixed solution cyclic electrolysis between copper liquid bath 10 and electrolyzer 11, extracts copper coin; When copper ion concentration is reduced to about 20g/L, repeat to dissolve Cu (OH) with electrolytic solution
2step, to improve copper ion concentration, improves electrolytic efficiency; Whole system uniquely discharges as copper ion concentration is lower than the Na of 10ppm
2sO
4solution, without the need to adding any extra chemical reagent.
Micro-etched waste liquid is squeezed in subsider 2 by microetch liquid bath 1 via pumping 16, squeezes into NaOH solution enter subsider 2 by alkali groove 7; Subsider 2 starts to stir, and after reacting completely, solid-liquid mixed solution is separated through whizzer 3, and liquid enters clear liquid groove 4, is squeezing into salt bath 6 through pumping 16; In whizzer 3, remaining solid squeezes into H by acid tank 9
2sO
4solution dissolves, and enters copper liquid bath 10 after solution, and then solution is got back in whizzer 3; In alkali groove 7, acid tank 9, solution enters in electrodialysis cell 8, the NaOH that regeneration consumes; Copper liquid bath 10 solution enters electrolyzer 11 and carries out electrolysis, by heavy metal copper the ion extraction in solution out.
By above-mentioned specific embodiment, the beneficial effects of the utility model are: adopt sedimentation, separation, electrodialysis, be electrolyzed to produce complete equipment, micro-etched waste liquid is focused on by optimization design, both the problem of micro-etched waste liquid discharge can have been solved, considerable economic benefit can be brought again, really achieve the target of economic environment protection emission; Copper content in micro-etched waste liquid is reduced to zero, and generate not containing heavy metal waste liquid, output high purity copper coin, brings direct economic benefit; Output high-concentration sulfuric acid, can for personal or sale.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. a micro-etched waste liquid treatment unit, it is characterized in that, comprise microetch liquid bath, subsider, whizzer, clear liquid groove, solid solution groove, salt bath, alkali groove, electrodialysis cell, acid tank, copper liquid bath, electrolyzer, rectifier, support, electrical control cubicles, process pipe, pumping; Described Bracket setting has the upper and lower, and upper strata is connected with subsider, electrodialysis cell, rectifier and electrolyzer by process pipe; Lower floor is connected with salt bath, alkali groove, acid tank and copper liquid bath by process pipe; Described bracket outer is connected with whizzer, clear liquid groove and solid solution groove by process pipe, agitator is equipped with in described subsider, pumping is equipped with in described clear liquid groove, solid solution groove, salt bath, alkali groove, acid tank and copper liquid bath, described process pipe is provided with control valve group, described bracket outer is provided with electrical control cubicles, and described electrical control cubicles is connected with agitator, pumping, whizzer, valve group, electrolyzer, electrodialysis cell, rectifier electric signal; Described subsider top is provided with micro-etched waste liquid entrance, and is communicated with microetch liquid bath.
2. a kind of micro-etched waste liquid treatment unit according to claim 1, is characterized in that, described micro-etched waste liquid treatment unit is provided with four functional sections, stirring → separation → electrodialysis → electrolysis; Described microetch liquid bath, subsider, clear liquid groove, solid solution groove, salt bath, alkali groove, electrodialysis cell, acid tank, copper liquid bath, electrolyzer, process pipe all adopt PP material welding manufacture, described rectifier, whizzer, electrical control cubicles and pumping are standardized component, be equipped with electrolyzer in electrolyzer, in electrodialysis cell, be equipped with electrodialytic membranes group.
3. a kind of micro-etched waste liquid treatment unit according to claim 1, it is characterized in that, described subsider is square cell body, is provided with stirring motor, liquid-inlet pipe, drain pipe, described liquid-inlet pipe is in subsider cell body top, and described drain pipe is in subsider cell body bottom; Described salt bath and alkali groove are the square cell body that integral type is arranged, and be made up of, be positioned at subsider and electrodialysis cell bottom, the side of acid tank two horizontal pumpings and cell body; Described acid tank is square cell body, is made up of, is positioned at electrodialysis cell bottom, between alkali groove and copper liquid bath a horizontal pumping and cell body; Described copper liquid bath is square cell body, is made up of, is positioned at below electrolyzer, the side of acid tank a pumping and cell body; Described clear liquid groove, solid solution groove are square identical cell body, are positioned at whizzer side side by side, are made up of pneumatic pump and cell body; Described electrolyzer is square cell body, and be made up of rectifier and cell body, mounted inside has battery lead plate, is positioned at directly over copper liquid bath; Described electrodialysis cell is square cell body, is made up of 6 little cell bodies and rectifier, is positioned at above salt bath and alkali groove, the side of subsider; Described rectifier is electrolyzer, electrodialysis cell integral part, and be electrolyzer, electrodialytic membranes group provides propulsion source; Be positioned at subsider and electrodialysis cell rear portion; Described electrical control cubicles is system control unit, and separated layout puts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924770.5U CN205222888U (en) | 2015-11-18 | 2015-11-18 | Lose waste liquid treatment device a little |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924770.5U CN205222888U (en) | 2015-11-18 | 2015-11-18 | Lose waste liquid treatment device a little |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205222888U true CN205222888U (en) | 2016-05-11 |
Family
ID=55897965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520924770.5U Active CN205222888U (en) | 2015-11-18 | 2015-11-18 | Lose waste liquid treatment device a little |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205222888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521552A (en) * | 2016-10-18 | 2017-03-22 | 河海大学 | Hydrogen peroxide-sulfuric acid micro-etching waste liquid copper recovery and electric waste liquid regeneration two-segment type platform rotational flow electrolysis device and method |
| CN106587449A (en) * | 2016-12-13 | 2017-04-26 | 深圳市瑞世兴科技有限公司 | Handling method of copper nitrate waste liquid |
-
2015
- 2015-11-18 CN CN201520924770.5U patent/CN205222888U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521552A (en) * | 2016-10-18 | 2017-03-22 | 河海大学 | Hydrogen peroxide-sulfuric acid micro-etching waste liquid copper recovery and electric waste liquid regeneration two-segment type platform rotational flow electrolysis device and method |
| CN106521552B (en) * | 2016-10-18 | 2018-05-18 | 河海大学 | A kind of hydrogen peroxide-sulfuric acid micro-etched waste liquid copper recycling two-part platform swirl electrolysis device regenerated with electric extraction raffinate and electrolytic method |
| CN106587449A (en) * | 2016-12-13 | 2017-04-26 | 深圳市瑞世兴科技有限公司 | Handling method of copper nitrate waste liquid |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215000, No. 6, Taishan Road, hi tech Zone, Jiangsu, Suzhou, 2 Patentee after: Environmental protection science and Technology (Suzhou) Co., Ltd. Address before: 215000, No. 6, Taishan Road, hi tech Zone, Jiangsu, Suzhou, 2 Patentee before: Tao Ke (Suzhou) Machinery Equipment Co., Ltd. |