CN110357142A - Copper-containing etching waste solution processing method and system - Google Patents
Copper-containing etching waste solution processing method and system Download PDFInfo
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- CN110357142A CN110357142A CN201910688391.3A CN201910688391A CN110357142A CN 110357142 A CN110357142 A CN 110357142A CN 201910688391 A CN201910688391 A CN 201910688391A CN 110357142 A CN110357142 A CN 110357142A
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- copper
- etching waste
- filter cake
- neutralizer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/10—Sulfates
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to technical field of waste water processing, a kind of copper-containing etching waste solution processing method and system are provided.This method comprises: carrying out acidic etching waste liquid and alkaline etching waste liquid for producing to be mixed to get neutralizer；Neutralizer is set to contact to obtain oxidation solution with oxygen；Pressure filtration is carried out to oxidation solution；First filter cake is beaten, the first slurries are subjected to pressure filtration；Second filter cake is beaten, by the second slurries of gained and strong sulfuric acid response；The reaction solution of sulfur acid copper is successively subjected to crystallisation by cooling and separation of solid and liquid, obtains copper sulfate crystal and copper sulphate mother liquor.After the present invention neutralizes cupric acidic etching waste liquid, neutralizer is aerated, due to the cuprous ion and chloride ion formation complex compound in neutralizer, under aeration state, cuprous ion is quickly oxidized to copper ion, forms basic copper chloride precipitating, and subsequent basic copper chloride precipitating is recycled by filters pressing and is used to prepare copper sulphate, while reducing waste water copper concentration, the rate of recovery of copper is improved.
Description
Technical field
The present invention relates to plating wastewater processing technology fields, and in particular to a kind of copper-containing etching waste solution processing method
And system.
Background technique
In the manufacturing process of printed circuit board, total amount of copper is in 60,000 tons/month or more, cupric in the copper waste etching solution of output
Etching waste liquor includes acid waste liquid and alkaline waste liquor, and the main component of acid waste liquid is copper chloride and hydrochloric acid, the master of alkaline waste liquor
Wanting ingredient is cuprammonia and ammonium hydroxide, and copper is that one kind is present in soil and the intracorporal heavy metal element of people and animals, content one in soil
As in 0.2ppm or so, with people and animals' intracorporal enzyme precipitating/complex reaction can occur for excessive copper, and poisoning by enzyme occurs and loses physiology
Function.Therefore, a large amount of copper waste etching solutions generated in the manufacturing process of printed circuit board are such as effectively treated, undoubtedly not in time
Serious pollution hidden trouble can be caused to the environment especially water resource of printed circuit board factory surrounding area and soil.
In the prior art, the general treatment process of cupric acidic etching waste liquid is neutralization precipitation method, in treated waste water
Copper concentration is higher.
In consideration of it, overcoming the above defect in the prior art, providing the new copper-containing etching waste solution processing method of one kind becomes
This field technical problem urgently to be resolved.
Summary of the invention
It is an object of the invention in view of the above drawbacks of the prior art, provide a kind of copper-containing etching waste solution processing method and
System.
The purpose of the present invention can be realized by technical measures below:
First aspect present invention provides a kind of copper-containing etching waste solution processing method, the treating method comprises:
S1 mixes acidic etching waste liquid and alkaline etching waste liquid for producing to neutralize to the acidic etching waste liquid,
Obtain neutralizer；
S2 contacts the neutralizer with oxygen to aoxidize the cuprous ion in the neutralizer, obtains oxidation solution；
S3 carries out pressure filtration to the oxidation solution, obtains the first waste liquid and the first filter cake；
First filter cake is added to the water and is beaten by S4, and the first slurries of gained are carried out pressure filtration, obtain second
Waste liquid and the second filter cake；
Second filter cake is added to the water and is beaten by S5, and the second slurries of gained are reacted with the concentrated sulfuric acid, are obtained
The reaction solution of sulfur acid copper；
The reaction solution of the sulfur acid copper is successively carried out crystallisation by cooling and separation of solid and liquid by S6, obtain copper sulfate crystal and
Copper sulphate mother liquor.
Preferably, in step sl, the pH of gained neutralizer is 4~5.
Preferably, step S1 includes: in neutralization reaction tank, under stiring by acidic etching waste liquid and alkaline etching waste liquid for producing
It is mixed to be neutralized to the acidic etching waste liquid, obtains neutralizer；
The processing method further include: will be in the copper sulphate mother liquor reflux to neutralizing tank.
Preferably, in step s 2, described to contact the neutralizer with oxygen to include:
Air or oxygen is passed through into the neutralizer；
Or, the neutralizer is sprayed in air or oxygen；
Or, the liquid level of the neutralizer is constantly updated, to promote air or oxygen to shift from gas-liquid interface to liquid phase.
Preferably, step S3 further include: the first filter cake of gained is washed；Step S4 further include: gained second is filtered
Cake is washed.
Preferably, step S3 includes:
The oxidation solution is introduced in filter press, the pressure generated by the filters pressing centrifugal pump of filter press is to the oxidation
Liquid carries out pressure filtration, to form the first filter cake；
Cleaning solution is passed through in the water pipe of filter press, makes to wash liquid stream by the pressure that the washing centrifugal pump of filter press generates
First filter cake is crossed, to wash to first filter cake.
Preferably, step S4 includes:
First filter cake is added to the water and is beaten, the first slurries are obtained；
First slurries are introduced in filter press, the pressure generated by the filters pressing centrifugal pump of filter press is to described the
One slurries carry out pressure filtration, to form the second filter cake；
Cleaning solution is passed through in the water pipe of filter press, makes to wash liquid stream by the pressure that the washing centrifugal pump of filter press generates
Second filter cake is crossed, to wash to second filter cake.
Preferably, in step s 5, the mass ratio of the copper content of the second slurries and the concentrated sulfuric acid is greater than or equal to 8:11.
Preferably, the density of second slurries is 1.40kg/m3~1.50kg/m3。
Second aspect of the present invention provides a kind of copper-containing etching waste solution processing system, the processing system include: neutralizing tank,
With the filter press for neutralizing tank connected aerator, being connect with the aerator, the mashing being connect with the filter press
Tank and with the tank connected acidizing crystal reaction kettle of the mashing.
Copper-containing etching waste solution processing method of the invention and system, after cupric acidic etching waste liquid is neutralized, centering
It is aerated with liquid, due to the cuprous ion and chloride ion formation complex compound in neutralizer, under aeration state, cuprous ion quilt
It is quickly oxidized to copper ion, forms basic copper chloride precipitating, subsequent basic copper chloride precipitating is recycled by filters pressing and is used to prepare sulphur
Sour copper improves the rate of recovery of copper while reducing waste water copper concentration.
Detailed description of the invention
Fig. 1 is the flow chart of the copper-containing etching waste solution processing method of the embodiment of the present invention.
Fig. 2 is the structural block diagram of the copper-containing etching waste solution processing system of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
Invention is further described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention,
It is not intended to limit the present invention.
In order to keep the narration of this disclosure more detailed with it is complete, below for embodiments of the present invention and specific real
It applies example and proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment
In cover multiple specific embodiments feature and to construction with operate these specific embodiments method and step it is suitable with it
Sequence.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.
The embodiment of the invention provides a kind of copper-containing etching waste solution processing methods, refering to Figure 1, the processing method
Include:
S1 mixes acidic etching waste liquid and alkaline etching waste liquid for producing to neutralize to the acidic etching waste liquid,
Obtain neutralizer.
S2 contacts the neutralizer with oxygen to aoxidize the cuprous ion in the neutralizer, obtains oxidation solution.
S3 carries out pressure filtration to the oxidation solution, obtains the first waste liquid and the first filter cake.
First filter cake is added to the water and is beaten by S4, and the first slurries of gained are carried out pressure filtration, obtain second
Waste liquid and the second filter cake.
Second filter cake is added to the water and is beaten by S5, and the second slurries of gained are reacted with the concentrated sulfuric acid, are obtained
The reaction solution of sulfur acid copper.
The reaction solution of the sulfur acid copper is successively carried out crystallisation by cooling and separation of solid and liquid by S6, obtain copper sulfate crystal and
Copper sulphate mother liquor.
The embodiment of the invention also provides a kind of copper-containing etching waste solution processing systems, please refer to shown in Fig. 2, the processing system
System includes: neutralizing tank 10, aerator 20, filter press 30, mashing tank 40 and acidizing crystal reaction kettle 50.
Copper-containing etching waste solution processing method is described in detail below with reference to copper-containing etching waste solution processing system.
Firstly, in step sl, acidic etching waste liquid and alkaline etching waste liquid for producing are transported to respectively in neutralizing tank 10, stirring
It mixes under state, acidic etching waste liquid and alkaline etching waste liquid for producing mixing carry out neutralization reaction, obtain neutralizer.
In the present embodiment, acidic etching waste liquid includes copper chloride, stannous chloride, hydrochloric acid and sodium chloride, wherein acidity erosion
The copper content for carving waste liquid is 10% (mass percent), copper ion including 8.5%~9% (mass percent) and 1%~
The cuprous ion of 1.5% (mass percent)；The molar concentration of HCl is 1~2mol/L in acidic etching waste liquid, and acid etching is useless
The content of sodium chloride is 2%~4% (mass percent) in liquid.
In the present embodiment, alkaline etching waste liquid for producing includes chlorination cuprammonium, ammonium hydroxide and ammonium chloride, wherein chlorination cuprammonium and ammonia
Water forms cupric ammine complex, and the molecular formula of the cupric ammine complex is Cu (NH3)4Cl2, the ratio of the cupric ammine complex weighs about 1.18~
1.25, the copper content of alkaline etching waste liquid for producing is 10% (mass percent)；In alkaline etching waste liquid for producing the molar concentration of ammonium hydroxide be 7~
9mol/L。
Wherein, the pH of neutralizer is in neutrality, and in a neutral state, cuprous ion and chloride ion form soluble complexing
Object.Further, by adjusting the volume ratio of the acidic etching waste liquid and alkaline etching waste liquid for producing that are passed through in neutralizing tank 10, in control
PH with liquid is 4~5.
Then, in step s 2, gained neutralizer is passed through into aerator 20, contacts the neutralizer with oxygen
To aoxidize the cuprous ion in the neutralizer, oxidation solution is obtained.
In the present embodiment, the mode for contacting the neutralizer with oxygen is one of the following: (1) to the neutralization
Air or oxygen is passed through in liquid；Or, (2) spray the neutralizer in air or oxygen；Or, (3) use mechanical aeration, no
The disconnected liquid level for updating the neutralizer, to promote air or oxygen to shift from gas-liquid interface to liquid phase.
It is illustrated in (1) kind mode as an example below, specifically, aerator 20 includes aeration tank 201, is set to aeration
Air-dispersing component 202 in slot 201 and the aeration pump 203 for conveying air or oxygen is connect with the air-dispersing component 202.In
It is transported in aeration tank 201 with liquid, is come into full contact with the air or oxygen to shed from air-dispersing component 202, it will be in neutralizer
Cuprous ion is oxidized to copper ion, obtains oxidation solution.
Then, in step s3, by gained oxidation solution be delivered to filter press 30 carry out pressure filtration, obtain the first waste liquid and
First filter cake.
In the present embodiment, the oxidation solution is introduced in filter press 30, is produced by the filters pressing centrifugal pump of filter press 30
Raw pressure carries out pressure filtration to the oxidation solution, to form the first filter cake and the first waste liquid.Wherein, sub- in the first waste liquid
The concentration of copper ion is 5~8g/L.Further, the first filter cake is washed, cleaning solution is passed through to the water pipe of filter press 30
It is interior, so that cleaning solution is flowed through first filter cake by the pressure that the washing centrifugal pump of filter press 30 generates, to first filter
Cake is washed.Wherein, it collects to the first cleaning solution of gained after the first Washing of Filter Cake, the first cleaning solution and the first waste liquid is carried out
Merge, in the waste liquid after merging, the concentration of cuprous ion is 3~5g/L.
Specifically, pressure filtration is carried out by the pressure of filters pressing centrifugal pump in filter press 30, filter cloth carries out sediment
Filtering retention (forms filter cake), and only clear liquid can reach the effect of pressure filtration by filter cloth (forming waste liquid).Washing is toward pressure
Cleaning solution (for example, cleaning solution is water) is passed through in the washing water pipeline of filter, under the pressure of washing centrifugal pump, water passes through filter
Soluble salt in filter cake is carried out dissolution washing removal by cake.Operation uses normal-temperature operation, and filtration time about 20 minutes, when washing
Between about 15 minutes.
Then, in step s 4, first filter cake is added to the water and is beaten, the first slurries of gained are pressurizeed
Filtering, obtains the second waste liquid and the second filter cake.
In the present embodiment, in mashing tank 40, first filter cake is added to the water and is beaten, the first slurry is obtained
Liquid；First slurries are introduced in filter press 30, the pressure generated by the filters pressing centrifugal pump of filter press 30 is to described the
One slurries carry out pressure filtration, to form the second filter cake and the second waste liquid.Wherein, entire pulping process can (example at normal temperature
Such as, 5 DEG C~35 DEG C) operation, beating time can be 20 minutes~40 minutes, for example, 30 minutes.Further, by cleaning solution
It is passed through in the water pipe of filter press 30, so that cleaning solution is flowed through second filter by the pressure that the washing centrifugal pump of filter press 30 generates
Cake, to be washed to second filter cake.Wherein, it collects to the second cleaning solution of gained after the second Washing of Filter Cake, second is washed
Liquid is washed to merge with the second waste liquid.
Specifically, the first filter cake of first time filters pressing enters in mashing tank 40, (originally with the clear water that is previously added in tank
Water) it is stirred mashing, the first filter cake is broken into muddy again, the soluble salt carried secretly in the first filter cake is dissolvable in water mashing water
In, it is further removed by subsequent secondary filters pressing, reaches washing more fully effect.
First cleaning solution is merged with the first waste liquid to gained waste liquid, waste liquid obtained by the second cleaning solution merges with the second waste liquid into
One step merges, the composition of final composite waste (ammonia nitrogen waste water) are as follows: ammonium chloride about 140g/L, sodium chloride about 8~10g/L, it is molten
Solve 3~5g/L of cuprous ion of state.
Final composite waste total amount is about that every one ton of copper sulphate of production generates 6~7 tons of ammonia nitrogen waste waters.Due to it is cuprous from
Son be in ammonium chloride waste-water it is soluble, cannot pass through precipitating filters pressing recycled, waste resource while increasing subsequent
Wastewater treatment pressure can be further by the final of collection it will be appreciated by those skilled in the art that in other embodiments
Cuprous ion in composite waste is oxidized to bivalent cupric ion, further reduces the copper content in final waste water, and further
Recycle copper ion in ground.
Then, in step s 5, second filter cake is added to the water and is beaten, by the second slurries of gained and the concentrated sulfuric acid
It is reacted, obtains the reaction solution of sulfur acid copper.
In the present embodiment, in mashing tank 40, second filter cake is added to the water and is beaten, the second slurry is obtained
Liquid.Second slurries are delivered in acidizing crystal reaction kettle 50, then the concentrated sulfuric acid is added in acidizing crystal reaction kettle 50, make second
Cupric sediment in slurries is by sulfuric acid dissolution at copper sulphate, while releasing heat makes reacting liquid temperature reach 100 DEG C or more.
Further, the density of the second slurries of control mashing gained is~1.50kg/m3, for example, being 1.45kg/m3；Second slurries contain
The mass ratio of amount of copper and the concentrated sulfuric acid is greater than or equal to 8:11, for example, the additional amount of the concentrated sulfuric acid is about that copper sulphate per ton is added
The 550kg concentrated sulfuric acid (sulfuric acid has excess), is added by sulfuric acid measuring tank.Further, acidizing crystal reaction kettle 50 is that enamel is anti-
Answer kettle.Further, the reaction time of the second slurries and the concentrated sulfuric acid is less than or equal to 30 minutes.
Finally, in step s 6, the reaction solution of the sulfur acid copper successively being carried out crystallisation by cooling and separation of solid and liquid, is obtained
Copper sulfate crystal and copper sulphate mother liquor.
In the present embodiment, it is crystallized in acidizing crystal reaction kettle 50, after previous step acidification reaction is complete, gained is anti-
It answers the copper sulphate in liquid close to saturation, cooling water is passed through in the collet of acidizing crystal reaction kettle 50, copper-bath is from 100 DEG C
It is cooled to 35~40 DEG C (winter temperature is lower, and summer water temperature is high, and temperature is higher) above, copper sulphate forms crystalline solid analysis
Out, it is centrifuged/washs, obtain sulfuric acid copper products.The time of crystallisation by cooling is 5~6 hours, compared with winter, summer
Time is slightly long.It is possible to further will be in the copper sulphate mother liquor reflux to neutralizing tank 10.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of copper-containing etching waste solution processing method, which is characterized in that the treating method comprises:
Acidic etching waste liquid and alkaline etching waste liquid for producing are mixed to neutralize to the acidic etching waste liquid, are obtained by S1
Neutralizer；
S2 contacts the neutralizer with oxygen to aoxidize the cuprous ion in the neutralizer, obtains oxidation solution；
S3 carries out pressure filtration to the oxidation solution, obtains the first waste liquid and the first filter cake；
First filter cake is added to the water and is beaten by S4, and the first slurries of gained are carried out pressure filtration, obtain the second waste liquid
With the second filter cake；
Second filter cake is added to the water and is beaten by S5, and the second slurries of gained are reacted with the concentrated sulfuric acid, obtain sulfur-bearing
The reaction solution of sour copper；
The reaction solution of the sulfur acid copper is successively carried out crystallisation by cooling and separation of solid and liquid, obtains copper sulfate crystal and sulfuric acid by S6
Copper mother liquor.
2. copper-containing etching waste solution processing method according to claim 1, which is characterized in that in step sl, gained neutralizes
The pH of liquid is 4~5.
3. copper-containing etching waste solution processing method according to claim 2, which is characterized in that step S1 includes: in and anti-
It answers in tank, acidic etching waste liquid and alkaline etching waste liquid for producing is mixed under stiring in carry out to the acidic etching waste liquid
With obtain neutralizer；
The processing method further include: will be in the copper sulphate mother liquor reflux to neutralizing tank.
4. copper-containing etching waste solution processing method according to claim 1, which is characterized in that in step s 2, described to make institute
It states neutralizer and is contacted with oxygen and include:
Air or oxygen is passed through into the neutralizer；
Or, the neutralizer is sprayed in air or oxygen；
Or, the liquid level of the neutralizer is constantly updated, to promote air or oxygen to shift from gas-liquid interface to liquid phase.
5. copper-containing etching waste solution processing method according to claim 1, which is characterized in that step S3 further include: to gained
First filter cake is washed；Step S4 further include: the second filter cake of gained is washed.
6. copper-containing etching waste solution processing method according to claim 5, which is characterized in that step S3 includes:
The oxidation solution is introduced in filter press, the pressure generated by the filters pressing centrifugal pump of filter press to the oxidation solution into
Row pressure filtration, to form the first filter cake；
Cleaning solution is passed through in the water pipe of filter press, so that cleaning solution is flowed through institute by the pressure that the washing centrifugal pump of filter press generates
The first filter cake is stated, to wash to first filter cake.
7. copper-containing etching waste solution processing method according to claim 5, which is characterized in that step S4 includes:
First filter cake is added to the water and is beaten, the first slurries are obtained；
First slurries are introduced in filter press, the pressure generated by the filters pressing centrifugal pump of filter press is to first slurry
Liquid carries out pressure filtration, to form the second filter cake；
Cleaning solution is passed through in the water pipe of filter press, so that cleaning solution is flowed through institute by the pressure that the washing centrifugal pump of filter press generates
The second filter cake is stated, to wash to second filter cake.
8. copper-containing etching waste solution processing method according to claim 1, which is characterized in that in step s 5, the second slurries
Copper content and the concentrated sulfuric acid mass ratio be greater than or equal to 8:11.
9. copper-containing etching waste solution processing method according to claim 1 or 8, which is characterized in that second slurries it is close
Degree is 1.40kg/m3~1.50kg/m3。
10. a kind of copper-containing etching waste solution processing system, which is characterized in that the processing system includes: neutralizing tank and the neutralization
Tank connected aerator, the filter press being connect with the aerator, the mashing tank being connect with the filter press and with institute
State the tank connected acidizing crystal reaction kettle of mashing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097946A1 (en) * | 2021-11-30 | 2023-06-08 | 中南大学 | Method for treating copper-containing etching waste liquid |
| WO2023123362A1 (en) * | 2021-12-31 | 2023-07-06 | 东江环保股份有限公司 | Method for preparing high-purity copper sulfate from acidic copper chloride etching waste liquid |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004359989A (en) * | 2003-06-03 | 2004-12-24 | Nittetsu Mining Co Ltd | Method for regenerating copper-etching waste liquid |
| CN1865166A (en) * | 2005-05-18 | 2006-11-22 | 陈晶 | Microwave circulating disposal process for printed plate board etching waste liquor |
| CN102190326A (en) * | 2010-03-05 | 2011-09-21 | 昶昕实业股份有限公司 | Methods for recovering copper from copper-containing waste liquor |
| CN102730744A (en) * | 2012-07-09 | 2012-10-17 | 昆山市千灯三废净化有限公司 | Process of removing calcium and magnesium from high-purity plating-stage copper sulfate |
| CN104355474A (en) * | 2014-11-07 | 2015-02-18 | 清远市中宇环保实业有限公司 | Technique for extracting copper ions from industrial wastewater |
| CN106348334A (en) * | 2016-11-18 | 2017-01-25 | 东莞市新意工业废物处理有限公司 | Feed-level copper sulfate and production technology thereof |
| CN206188415U (en) * | 2016-11-18 | 2017-05-24 | 东莞市新意工业废物处理有限公司 | Fodder level copper sulphate production system |
| CN206244575U (en) * | 2016-11-18 | 2017-06-13 | 东莞市新意工业废物处理有限公司 | A kind of cupric sulfate purified production system |
| CN207141935U (en) * | 2017-06-01 | 2018-03-27 | 广东省博罗县湘澧精细化工有限公司 | A kind of acidic and alkaline waste etching solution storage system |
-
2019
- 2019-07-29 CN CN201910688391.3A patent/CN110357142B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004359989A (en) * | 2003-06-03 | 2004-12-24 | Nittetsu Mining Co Ltd | Method for regenerating copper-etching waste liquid |
| CN1865166A (en) * | 2005-05-18 | 2006-11-22 | 陈晶 | Microwave circulating disposal process for printed plate board etching waste liquor |
| CN102190326A (en) * | 2010-03-05 | 2011-09-21 | 昶昕实业股份有限公司 | Methods for recovering copper from copper-containing waste liquor |
| CN102730744A (en) * | 2012-07-09 | 2012-10-17 | 昆山市千灯三废净化有限公司 | Process of removing calcium and magnesium from high-purity plating-stage copper sulfate |
| CN104355474A (en) * | 2014-11-07 | 2015-02-18 | 清远市中宇环保实业有限公司 | Technique for extracting copper ions from industrial wastewater |
| CN106348334A (en) * | 2016-11-18 | 2017-01-25 | 东莞市新意工业废物处理有限公司 | Feed-level copper sulfate and production technology thereof |
| CN206188415U (en) * | 2016-11-18 | 2017-05-24 | 东莞市新意工业废物处理有限公司 | Fodder level copper sulphate production system |
| CN206244575U (en) * | 2016-11-18 | 2017-06-13 | 东莞市新意工业废物处理有限公司 | A kind of cupric sulfate purified production system |
| CN207141935U (en) * | 2017-06-01 | 2018-03-27 | 广东省博罗县湘澧精细化工有限公司 | A kind of acidic and alkaline waste etching solution storage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097946A1 (en) * | 2021-11-30 | 2023-06-08 | 中南大学 | Method for treating copper-containing etching waste liquid |
| WO2023123362A1 (en) * | 2021-12-31 | 2023-07-06 | 东江环保股份有限公司 | Method for preparing high-purity copper sulfate from acidic copper chloride etching waste liquid |
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|---|---|
| CN110357142B (en) | 2022-02-01 |
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