CN203307434U - Regeneration treatment system of acidic etching waste liquid - Google Patents
Regeneration treatment system of acidic etching waste liquid Download PDFInfo
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- CN203307434U CN203307434U CN2013202060402U CN201320206040U CN203307434U CN 203307434 U CN203307434 U CN 203307434U CN 2013202060402 U CN2013202060402 U CN 2013202060402U CN 201320206040 U CN201320206040 U CN 201320206040U CN 203307434 U CN203307434 U CN 203307434U
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- waste liquid
- treatment system
- etching
- regeneration treatment
- absorption cell
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Abstract
The utility model discloses a regeneration treatment system of acidic etching waste liquid. The regeneration treatment system comprises an electrolytic cell, a waste gas collecting device arranged above the electrolytic cell, and a jet flow absorbing tank connected with the waste gas collecting device, wherein a cathode chamber of the electrolytic cell is mutually communicated with an anode chamber of the electrolytic cell, acidic etching waste liquid is circularly guided into the electrolytic cell and the jet flow absorbing tank, and is regenerated into regenerated liquid through the electrolytic cell and the jet flow absorbing tank, and then the regenerated liquid is returned to a production etching cylinder. According to the regeneration treatment system, electrolysis is carried out by adopting a conventional electrolytic cell, and chlorine generated by electrolysis of the acidic etching waste liquid is collected, one part of chlorine is used for oxidizing cupric ions in the etching waste liquid, excessive chlorine is used as an oxidizing agent after reacting with water in the etching waste liquid, and the oxidizing agent and acid are returned to the production etching cylinder, no additional oxidizing agent is added for regenerating the etching waste liquid, thus no environmental pollution is caused and resources can be saved. Meanwhile, the regeneration treatment system disclosed by the utility model is simple in structure, low in cost and easy to maintain.
Description
Technical field
The utility model relates to the trade effluent environmental protection treatment and metallic copper reclaims field, especially, relates to a kind of regeneration treatment system of acidic etching waste liquid.
Background technology
The rapid growth of electronic industry, make printed circuit board (PCB) output day by day increase, thereby caused generation and the discharge of a large amount of circuit card etching waste liquors, comprising: micro-etched waste liquid, acidic etching waste liquid and alkaline etching waste liquid for producing.There is family more than 3000 in China printed circuit board manufacturing concern at present, and the acidic etching liquid quantity discharged is about 8kt/d, and is increasing.For this reason, national environmental protection cloth promulgated by the ministries or commissions of the Central Government " the state environment protecting standard HG450-2008 of the People's Republic of China (PRC) ", the regulation printed-wiring board (PWB) is manufactured manufacturing enterprise and must be recycled its etching solution, and the rate of recovery of copper will reach 95%.The main component of acidic etching waste liquid comprises cupric chloride, hydrogenchloride, ammonia chloride or sodium-chlor etc., wherein the concentration of copper higher than 100g/L in the etching process that PCB produces, the Cu in acidic etching liquid
2+Ion and Copper Foil effect generate Cu
+Ion, and Cu
+Ionic concn constantly raises, Cu
2+Ionic concn constantly reduces, and etch capabilities reduces gradually.When the etch capabilities of acidic etching liquid is reduced to a certain degree, just must carry out manipulation of regeneration, reclaim copper wherein, make again etching solution reuse after treatment, very great economic worth and Significance for Environment are arranged.
At present, the regenerating waste acidic etching liquid treatment facility is mainly electrolyzer, and electrolyzer comprises conventional electrolysis groove and membrane electrolyser.
Cathode compartment and the anolyte compartment of conventional electrolysis groove are interconnected, so anolyte is all identical with composition and the concentration of catholyte, can produce a large amount of chlorine, to environment and murder by poisoning, simultaneously, has also caused the chlorine wasting of resources.Membrane electrolyser adopts ionic membrane as the physical isolation material, by anolyte, catholyte separately, thereby makes composition difference, the concentration of anolyte, catholyte different, reduces separating out of chlorine.But also there is following drawback in the film electrolysis: the work-ing life of film is short, and easily damaged, cost is high; And bath voltage is high, power consumption is high.In addition, the etching waste liquor of above two kinds of electrolytic systems after processing all needs to add extra oxygenant and regenerates; And the current electrolysis method is processed acidic etching waste liquid and is generally produced copper powder, need complicated copper system, application cost is higher.
The utility model content
The utility model purpose is to provide a kind of regeneration of adopting the conventional electrolysis groove to realize acidic etching waste liquid, and simple in structure, non-environmental-pollution, do not need to add the regeneration treatment system of the acidic etching waste liquid of oxygenant, to solve existing discharge chlorine pollution environment while adopting the conventional electrolysis groove to carry out the regeneration of acidic etching waste liquid, and short, easy breakage in work-ing life, the cost of film is high while adopting membrane electrolyser to carry out the regeneration of acidic etching waste liquid; And aforementioned two kinds of modes all need to add extra oxygenant, increase the technical problem of cost.
For achieving the above object, the utility model provides a kind of regeneration treatment system of acidic etching waste liquid, it is characterized in that, comprising: the electrolyzer that cathode compartment and anolyte compartment are interconnected, the waste gas collection device of being located at described electrolyzer top and the jet absorption cell be connected with described waste gas collection device;
The circulation of described acidic etching waste liquid imports in described electrolyzer and described jet absorption cell, through described electrolyzer with return to described production etching cylinder after described jet absorption cell manipulation of regeneration becomes regenerated liquid.
As further improvement of the utility model:
On described jet absorption cell, be provided with the alkali spray equipment.
The waste gas that described waste gas collection device will be collected from described electrolyzer top by ejector injects described jet absorption cell, and described jet absorption cell is communicated with described production etching cylinder by pipeline.
Described jet absorption cell is connected with the ORP instrument of the potential value of acidic etching waste liquid for monitoring described jet absorption cell, and will return to described production etching cylinder through the regenerated liquid that described jet absorption cell produces according to the detected result of described ORP instrument.
Described system also comprises that described waste liquid storage tanks is connected with described electrolyzer with described jet absorption cell respectively by pipeline be used to the waste liquid storage tanks of the acidic etching waste liquid that is installed in described production etching cylinder discharge.
Described electrolyzer is communicated with by the circulation of pipeline and circulation of elecrolyte groove, and described circulation of elecrolyte groove from described waste liquid storage tanks, importing described acidic etching waste liquid, and exports to the etching solution overflow groove by the regenerated liquid that described electrolyzer is processed generation by pipeline;
Described waste liquid storage tanks and described etching solution overflow groove are communicated with described production etching cylinder by pipeline respectively.
Described etching solution overflow groove is connected with specific gravity hydrometer.
Between described waste liquid storage tanks and described circulation of elecrolyte groove, between described circulation of elecrolyte groove and described electrolyzer, between described etching solution overflow groove and described production etching cylinder, be equipped with pump between described jet absorption cell and described production etching cylinder.
In described electrolyzer, be provided with and negative plate and positive plate, described negative plate and positive plate are electrically connected with negative pole and the positive pole of direct supply respectively, and described negative plate is the titanium plate, and described positive plate is for analysing chlorine type titanium coated anode plate.
The utlity model has following beneficial effect:
The regeneration treatment system of acidic etching waste liquid of the present invention, adopt the conventional electrolysis groove to realize the regeneration of acidic etching waste liquid, and collect the cuprous ion utilize in the chlorine part oxide etch waste liquid that the acidic etching waste liquid electrolysis produces, another part with as oxygenant and acid, return to production etching cylinder after water reacts, do not need additionally to add the oxygenant etching waste liquor of regenerating, non-environmental-pollution also can economize on resources; Simultaneously, due to the conventional electrolysis groove adopted without ion-exchange membrane, simple in structure, with low cost.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below with reference to figure, the utility model is described in further detail.
The accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the composition structural representation of regeneration treatment system of the acidic etching waste liquid of the utility model preferred embodiment;
Fig. 2 is the treatment scheme schematic diagram that the regeneration treatment system of the utility model preferred embodiment carries out the regeneration of acidic etching waste liquid; And
Fig. 3 is that another of regeneration treatment system of the acidic etching waste liquid of the utility model preferred embodiment forms structural representation.
Marginal data:
1, electrolyzer; 2, waste gas collection device; 3, jet absorption cell; 4, production etching cylinder; 5, alkali spray equipment; 6, ejector; 7, pump; 8, waste liquid storage tanks; 9, etching solution overflow groove; 10, circulation of elecrolyte groove.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, the regeneration treatment system of acidic etching waste liquid of the present utility model comprises: electrolyzer 1, the waste gas collection device 2 of being located at electrolyzer 1 top that cathode compartment and anolyte compartment are interconnected and the jet absorption cell 3 be connected with waste gas collection device 2; Acidic etching waste liquid circulation imports in electrolyzer 1 and jet absorption cell 3, through electrolyzer 1 with return to production etching cylinder 4 after jet absorption cell 3 manipulation of regeneration become regenerated liquid.
Referring to Fig. 2, when above-mentioned regeneration treatment system carried out the regeneration of acidic etching waste liquid, direct or indirect acidic etching waste liquid from production etching cylinder 4 entered electrolyzer 1 and carries out electrolysis, and following electrolytic reaction occurs in electrolyzer 1: the negative electrode main reaction is: Cu
2++ 2e → Cu; Cu
++ e → Cu; The anode main reaction is: 2Cl
--2e → Cl
2.The waste gas collection device 2 of being located at electrolyzer 1 top is collected the waste gas of electrolysis generation (main component is the hydrogen chloride gas that chlorine and volatilization produce) and is input in jet absorption cell 3, to the acidity that the cuprous ion in the acidic etching waste liquid in jet absorption cell 3 carries out oxidation and supplements etching waste liquor, following reaction occurs in jet absorption cell 3: reaction formula is as follows: Cl
2+ 2Cu
+→ 2Cl
-+ 2Cu
2+, following side reaction: Cl occurs in excessive chlorine
2+ H
2O → HCl+HClO, product hydrogenchloride and clorox enter in the etching solution of production etching cylinder 4 in the lump be used to improving acidity and supplemental oxidant.This system is closed cycle, but online production.As can be known by aforementioned analysis, the native system non-environmental-pollution also can economize on resources; Simultaneously, due to the conventional electrolysis groove 1 adopted without ion-exchange membrane, simple in structure, with low cost.
Simultaneously, be provided with and negative plate and positive plate in above-mentioned electrolyzer 1, negative plate and positive plate are electrically connected with negative pole and the positive pole of direct supply respectively.Positive plate and negative plate to above-mentioned electrolyzer 1 are in optimized selection, as, negative plate is the titanium plate, positive plate is for analysing chlorine type titanium coated anode plate; And electrolytic reaction in electrolyzer 1 is carried out to suitable parameter and control, as, current density is 450A/m
2, just can obtain product is the fine and close copper coin of purity more than 99.5%, can simplify the copper system.
Referring to Fig. 3, on the basis of above-mentioned regeneration treatment system, this system also can comprise and with production etching cylinder 4, being communicated with and be used to being installed in the waste liquid storage tanks 8 of the acidic etching waste liquid that production etching cylinder 4 discharges, waste liquid storage tanks 8 is connected with electrolyzer 1 (by circulation of elecrolyte groove 10 indirect communication) with jet absorption cell 3 respectively by pipeline.Electrolyzer 1 is communicated with 10 circulations of circulation of elecrolyte groove by pipeline, circulation of elecrolyte groove 10, and is processed by electrolyzer 1 regenerated liquid (overflowing liquid) produced and is exported to etching solution overflow groove 9 from waste liquid storage tanks 8, importing acidic etching waste liquid (it is good making cupric ion maintain 30-40g/L) by pipeline; Etching solution overflow groove 9 is communicated with production etching cylinder 4 by pipeline, and under the control of specific gravity hydrometer (the GH-120G type specific gravity hydrometer that the present embodiment adopts Taiwan agate sesame Haake instrument company limited to produce), partly adding overflowing liquid to production etching cylinder 4, reduce the proportion of etching waste liquor in the etching cylinder, this return course is successive processes.Thereby form the regeneration treatment system of closed cycle as shown in Figure 3.Can be between waste liquid storage tanks 8 and circulation of elecrolyte groove 10, between circulation of elecrolyte groove 10 and electrolyzer 1, between etching solution overflow groove 9 and production etching cylinder 4, between jet absorption cell 3 and production etching cylinder 4, pump 7 be set all.
In practical application, for make in jet absorption cell 3 unreacted completely waste gas fully react, can preferably on jet absorption cell 3, be provided with alkali spray equipment 5.Generally in alkali spray equipment 5, be installed in sodium hydroxide solution, thereby make alkali spray equipment 5 that following reaction: NaOH+HCl → NaCl+H occur
2O, 2NaOH+Cl
2→ NaCl+NaClO+H
2O, so that discharge without waste gas, system is the environmental protection close friend more.
In practical application, waste gas collection device 2 is to inject jet absorption cell 3 by the waste gas that ejector 6 will be collected from electrolyzer 1 top, and jet absorption cell 3 is communicated with production etching cylinder 4 by pipeline.ORP (the ORP of jet absorption cell 3 and the redox potential value of acidic etching waste liquid for monitoring jet absorption cell 3, Oxidation-Reduction Potential, redox potential) instrument is (not shown, the SY712 type ORP instrument that adopts Beijing good bodyguard water development in science and technology company limited to produce in the present embodiment) be connected, and will return to production etching cylinder 4 through the regenerated liquid that jet absorption cell 3 produces according to the detected result of ORP instrument.This step is step, and when the detected result of ORP instrument met default the requirement, the regenerated liquid just jet absorption cell 3 produced returned to production etching cylinder 4, and during actual production, this return action carried out once at interval of for some time.
In summary, the regeneration treatment system of acidic etching waste liquid of the present invention, adopt conventional electrolysis groove 1 to realize the regeneration of acidic etching waste liquid, and collect and utilize acidic etching waste liquid the electrolysis chlorine produced and the hydrogen chloride gas that volatilizees and produce, and do not need additionally to add the oxygenant etching waste liquor of regenerating, non-environmental-pollution also can economize on resources; Simultaneously, due to the conventional electrolysis groove 1 adopted without ion-exchange membrane, bath voltage is low, and power consumption is few; And the copper system of adopt simplifying, it is simple in structure, with low cost and be easy to safeguard.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. the regeneration treatment system of an acidic etching waste liquid, it is characterized in that, comprising: the electrolyzer (1) that cathode compartment and anolyte compartment are interconnected, the waste gas collection device (2) of being located at described electrolyzer (1) top and the jet absorption cell (3) be connected with described waste gas collection device (2);
The circulation of described acidic etching waste liquid imports in described electrolyzer (1) and described jet absorption cell (3), through described electrolyzer (1) with return to production etching cylinder (4) after described jet absorption cell (3) manipulation of regeneration becomes regenerated liquid.
2. regeneration treatment system according to claim 1, is characterized in that, on described jet absorption cell (3), is provided with alkali spray equipment (5).
3. according to the described regeneration treatment system of any one in claim 1 to 2, it is characterized in that, the waste gas that described waste gas collection device (2) will be collected from described electrolyzer (1) top by ejector (6) injects described jet absorption cell (3), and described jet absorption cell (3) is communicated with described production etching cylinder (4) by pipeline.
4. regeneration treatment system according to claim 3, it is characterized in that, described jet absorption cell (3) is connected with the ORP instrument of the potential value of acidic etching waste liquid for monitoring described jet absorption cell (3), and will return to described production etching cylinder (4) through the regenerated liquid that described jet absorption cell (3) produces according to the detected result of described ORP instrument.
5. regeneration treatment system according to claim 3, it is characterized in that, described system also comprises that described waste liquid storage tanks (8) is connected with described electrolyzer (1) with described jet absorption cell (3) respectively by pipeline be used to the waste liquid storage tanks (8) of the acidic etching waste liquid that is installed in described production etching cylinder (4) discharge.
6. regeneration treatment system according to claim 5, it is characterized in that, described electrolyzer (1) is communicated with circulation of elecrolyte groove (10) circulation by pipeline, described circulation of elecrolyte groove (10), and is processed by described electrolyzer (1) regenerated liquid produced and is exported to etching solution overflow groove (9) from described waste liquid storage tanks (8), importing described acidic etching waste liquid by pipeline;
Described waste liquid storage tanks (8) and described etching solution overflow groove (9) are communicated with described production etching cylinder (4) by pipeline respectively.
7. regeneration treatment system according to claim 6, is characterized in that, described etching solution overflow groove (9) is connected with specific gravity hydrometer.
8. regeneration treatment system according to claim 7, it is characterized in that, between described waste liquid storage tanks (8) and described circulation of elecrolyte groove (10), between described circulation of elecrolyte groove (10) and described electrolyzer (1), between described etching solution overflow groove (9) and described production etching cylinder (4), be equipped with pump (7) between described jet absorption cell (3) and described production etching cylinder (4).
9. according to the described regeneration treatment system of any one in claim 4 to 8, it is characterized in that, in described electrolyzer (1), be provided with and negative plate and positive plate, described negative plate and positive plate are electrically connected with negative pole and the positive pole of direct supply respectively, described negative plate is the titanium plate, and described positive plate is for analysing chlorine type titanium coated anode plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202060402U CN203307434U (en) | 2013-04-23 | 2013-04-23 | Regeneration treatment system of acidic etching waste liquid |
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|---|---|---|---|
| CN2013202060402U CN203307434U (en) | 2013-04-23 | 2013-04-23 | Regeneration treatment system of acidic etching waste liquid |
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| Publication Number | Publication Date |
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| CN203307434U true CN203307434U (en) | 2013-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630825A (en) * | 2015-01-20 | 2015-05-20 | 昆山美源达环保科技有限公司 | Device and process for electrolytically extracting copper in acidic etching liquid |
| CN105821413A (en) * | 2016-04-28 | 2016-08-03 | 上海八菱环保科技有限公司 | Circulating utilization system of acid waste liquid |
| CN106007114A (en) * | 2016-07-29 | 2016-10-12 | 陈铭 | Electronic factory waste liquid treatment system |
| CN114855171A (en) * | 2022-04-01 | 2022-08-05 | 安徽中科冉图环保科技有限公司 | Acidic etching solution waste liquid treatment system and method |
-
2013
- 2013-04-23 CN CN2013202060402U patent/CN203307434U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630825A (en) * | 2015-01-20 | 2015-05-20 | 昆山美源达环保科技有限公司 | Device and process for electrolytically extracting copper in acidic etching liquid |
| CN105821413A (en) * | 2016-04-28 | 2016-08-03 | 上海八菱环保科技有限公司 | Circulating utilization system of acid waste liquid |
| CN105821413B (en) * | 2016-04-28 | 2018-11-13 | 上海八菱环保科技有限公司 | Acid waste liquid cyclic utilization system |
| CN106007114A (en) * | 2016-07-29 | 2016-10-12 | 陈铭 | Electronic factory waste liquid treatment system |
| CN114855171A (en) * | 2022-04-01 | 2022-08-05 | 安徽中科冉图环保科技有限公司 | Acidic etching solution waste liquid treatment system and method |
| CN114855171B (en) * | 2022-04-01 | 2024-03-26 | 安徽中科冉图环保科技有限公司 | acidic etching liquid waste liquid treatment system and method |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20210423 |