CN102633392A - Cyclic utilization of waste liquor in small sulfate copper plating process test - Google Patents
Cyclic utilization of waste liquor in small sulfate copper plating process test Download PDFInfo
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- CN102633392A CN102633392A CN2012101366196A CN201210136619A CN102633392A CN 102633392 A CN102633392 A CN 102633392A CN 2012101366196 A CN2012101366196 A CN 2012101366196A CN 201210136619 A CN201210136619 A CN 201210136619A CN 102633392 A CN102633392 A CN 102633392A
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- Prior art keywords
- waste liquor
- small
- waste liquid
- copper
- cyclic utilization
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Abstract
The invention discloses cyclic utilization of waste liquor in a small sulfate copper plating process test and relates to the field of comprehensive utilization of waste liquor in the field of electroplating. The cyclic utilization of the waste liquor is realized through the following steps of: firstly filtering the waste liquor to remove indissolvable impurities in the waste liquor; then recovering copper in the waste liquor through an electrolytic process, wherein the density of the electrolysis current is 0.1-0.15A/dm<2>; adding NaOH and NaHSO3 into the solution and removing heavy metal ions in the waste liquor through a chemical deposition method; performing innocent treatment on a settlement; and finally performing ultrafitration on the waste liquor to obtain purified water. The cyclic utilization of the waste liquor serves as a simple and practical method with low cost for treating the virulent and environment-polluting electroplating waste liquor generated in the small process test.
Description
Technical field
The present invention relates to the recycle of the small-sized technological test waste liquid of vitriol copper facing, mainly discuss the effect and the working method of this method.
Background technology
The waste water that Electroplating Production produces contains acid, alkali, and prussiate, sexavalent chrome, copper, the nickel plasma also contains the benzene class, organism such as amine, these materials are all toxic, the meeting harm environment and the mankind in various degree.The small-sized technological test of vitriol copper facing is destructive test, is progressively to add the different substances observing effect during real the test, so after test finishes, contain acid in the plating bath; Alkali, prussiate, sexavalent chrome, copper; The nickel plasma also contains the benzene class, organism such as amine, and this plating bath can not be recycled.And when small-sized technological test, all directly be discharged into nature owing to lack the most of waste liquid of the equipment of handling electroplating wastewater, and environment and human body are caused very big injury, therefore just very important to the processing of small-sized technological test waste liquid.
Summary of the invention
Electroplating effluent in the small-sized technological test can not be utilized because plating bath is destroyed again, in order to reduce pollution, need handle.Copper plating bath composition: CuSO
4, H
2SO
4, vitriol copper brightener and a small amount of Cl
-, Cr
6+Severe toxicity and contaminate environment are arranged, so need handle.
The present invention is the recycle of the small-sized technological test waste liquid of vitriol copper facing.Provide a kind of simple, suitable laboratory to handle the recycle method of the small-sized technological test waste liquid of vitriol copper facing.
Concrete preparation method of the present invention comprises the step of following order:
A. the small-sized technological test waste liquid of vitriol copper facing is filtered, remove wherein indissoluble thing impurity;
B. the waste liquid of step a being handled advances through CI, with 0.1～0.15A/dm
2The low current density electrolysis treatment is processed slab as anode in advance with blister copper (cupric 99%), and fine copper is laminated and made negative electrode, carries out electrolysis 12 hours;
C. in the waste liquid that step b handled, add the sodium hydrate solid of 150～200g/L and the NaHSO of 70～75mg/L
3, the reaction that takes place in the waste liquid is following:
2H
2Cr
2O
7+6NaHO
3+3H
2SO
4→2Cr
2(SO
4)
3+3Na
2SO4+8H
2O；
Cr
2(SO
4)
3+6NaOH→2Cr(OH)
3↓+3Na
2SO
4；
Cu
2++2OH
-→Cu(OH)2↓；
Filter, throw out is burned buried processing;
D. the waste water utilization Treatment with Ultrafiltration after step c being handled is produced pure water;
Embodiment
Embodiment 1
Get the 2L waste plating solution, after the filtration, carried out electrolysis 12 hours, after the taking-up anode and cathode, to wherein adding 300g sodium hydrate solid and 100mg NaHSO
3After, stir, filter out throw out then after, get pure water 1.8L with Treatment with Ultrafiltration.The negative electrode weightening finish 52g that the experiment back is claimed.
Embodiment 2
Get the 3L waste plating solution, after the filtration, carried out electrolysis 12 hours, after the taking-up anode and cathode, to wherein adding 470g sodium hydrate solid and 140mg NaHSO
3After, stir, filter out throw out then after, get pure water 2.75L with Treatment with Ultrafiltration.The negative electrode weightening finish 80g that the experiment back is claimed.
Embodiment 3
Get the 5L waste plating solution, after the filtration, carried out electrolysis 12 hours, after the taking-up anode and cathode, to wherein adding 800g sodium hydrate solid and 200mg NaHSO
3After, stir, filter out throw out then after, get pure water 4.85L with Treatment with Ultrafiltration.The negative electrode weightening finish 150g that the experiment back is claimed.
Claims (3)
1. the small-sized technological test waste liquid of vitriol copper facing recycle comprises following sequential steps:
A. the small-sized technological test waste liquid of vitriol copper facing is filtered, remove thing impurity wherein hard to tolerate;
B. the waste liquid of step a being handled passes through CI, with 0.1～0.15A/dm
2The low current density electrolysis treatment is processed slab as anode in advance with blister copper (cupric 99%), and fine copper is laminated and made negative electrode, carries out electrolysis 12 hours;
C. in the waste liquid that step b handled, add the NaOH of 150～200g/L and the NaHSO of 70～75mg/L
3, filter, throw out is burned buried processing;
D. the waste water utilization Treatment with Ultrafiltration after step c being handled is produced pure water.
2. the recycle of the small-sized technological test waste liquid of vitriol copper facing according to claim 1 is characterized in that: step b processes slab as anode in advance with blister copper (cupric 99%), and fine copper is laminated and made negative electrode, carries out electrolysis 12 hours.
3. the recycle of the small-sized technological test waste liquid of vitriol copper facing according to claim 1, it is characterized in that: steps d utilizes Treatment with Ultrafiltration to make pure water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101366196A CN102633392A (en) | 2012-05-04 | 2012-05-04 | Cyclic utilization of waste liquor in small sulfate copper plating process test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101366196A CN102633392A (en) | 2012-05-04 | 2012-05-04 | Cyclic utilization of waste liquor in small sulfate copper plating process test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102633392A true CN102633392A (en) | 2012-08-15 |
Family
ID=46617994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101366196A Pending CN102633392A (en) | 2012-05-04 | 2012-05-04 | Cyclic utilization of waste liquor in small sulfate copper plating process test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102633392A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030150736A1 (en) * | 2002-02-11 | 2003-08-14 | Applied Materials, Inc. | Apparatus and method for removing contaminants from semiconductor copper electroplating baths |
| CN101906654A (en) * | 2010-07-19 | 2010-12-08 | 葫芦岛锌业股份有限公司 | Method for purifying copper electrolyte with minimal chemical reacting dose |
| CN102061507A (en) * | 2010-11-02 | 2011-05-18 | 山东建筑大学 | Method for recycling test waste liquid of laboratorial sulphate copperization process |
-
2012
- 2012-05-04 CN CN2012101366196A patent/CN102633392A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030150736A1 (en) * | 2002-02-11 | 2003-08-14 | Applied Materials, Inc. | Apparatus and method for removing contaminants from semiconductor copper electroplating baths |
| CN101906654A (en) * | 2010-07-19 | 2010-12-08 | 葫芦岛锌业股份有限公司 | Method for purifying copper electrolyte with minimal chemical reacting dose |
| CN102061507A (en) * | 2010-11-02 | 2011-05-18 | 山东建筑大学 | Method for recycling test waste liquid of laboratorial sulphate copperization process |
Non-Patent Citations (3)
| Title |
|---|
| 储荣邦 等: "镀镍液中铜杂质污染及其排除方法", 《表面工程咨询》 * |
| 张丽艳: "镀镍溶液常见杂质的影响和去除", 《一重技术》 * |
| 张文辉: "电解法控制镀液金属杂质的探讨与应用", 《材料保护》 * |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120815 |