CN102040304A - Method for recycling waste liquor of zinc plating using potassium salt in laboratory - Google Patents
Method for recycling waste liquor of zinc plating using potassium salt in laboratory Download PDFInfo
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- CN102040304A CN102040304A CN 201010527534 CN201010527534A CN102040304A CN 102040304 A CN102040304 A CN 102040304A CN 201010527534 CN201010527534 CN 201010527534 CN 201010527534 A CN201010527534 A CN 201010527534A CN 102040304 A CN102040304 A CN 102040304A
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- waste liquor
- waste liquid
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- potassium salt
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- Manufacture And Refinement Of Metals (AREA)
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Abstract
The invention discloses a method for recycling waste liquor of zinc plating using potassium salt in a laboratory and relates to the field of comprehensive utilization of waste liquor in the field of plating. The method comprises the following steps of: adding hydrogen peroxide and activated carbon into the waste liquor to remove organic impurities from the waste liquor; then reducing the temperature of the solution by using a refrigeration sheet, and filtering out solid in the solution; adding NaOH solid and NaHSO3 into the solution; precipitating heavy metal elements in the solution out through chemical reaction; and finally distilling to obtain distilled water. By the method, recoverable substances, such as distilled water, boric acid and the like in the waste liquor can be recycled, and unrecoverable substances, such as heavy metal ions (Cu<2+> and Cr<3+>) are subjected to innocent treatment by a deep burying method. The invention provides a simple and practical method, by which resources can be effectively recycled and pollution can be reduced, for treating the waste liquor of zinc plating using potassium salt in the laboratory.
Description
Technical field
The present invention relates to the sylvite galvanized waste liquid cyclic utilization method in a kind of laboratory, mainly discuss the effect and the working method of this method.
Background technology
Now environmental problem becomes increasingly conspicuous, and pollutes seriously day by day, and the harm of heavy metal ion is particularly serious, must be paid attention to.The sylvite galvanized technological experiment in laboratory has added Cu in experiment
2+And Cr
6+Interfering ion can not recycle.But wherein contain heavy metal ion, if directly the discharging meeting pollutes environment.But do not focus on the sewage works that contains the heavy metal ion waste liquid in school.And breadboard waste liquid quantity has and is not a lot, generally all directly is drained into water drain, but this also can pollute soil, animal etc., can waste some resources that can utilize wherein in addition.Zinc-plated waste liquid quantity is not huge in the test, just in time can utilize medicine and equipment in the laboratory to handle, and reclaims resource, has reduced the waste of resource, reduces the pollution of heavy metal ion.
Summary of the invention
The waste liquid of sylvite galvanized technological test mainly comprises degreasing fluid, pickle solution and zinc plating waste liquid.Degreasing fluid and pickle solution can repeatedly reuse.But the not reproducible use of zinc plating waste liquid, the zinc solution composition is ZnCl
2, KCl, H
3BO
3, sylvite zinc-plating brightener and a small amount of Cu
2+And Cr
6+, poisonous, contaminate environment must be handled.
The present invention is the sylvite galvanized waste liquid cyclic utilization method in a kind of laboratory.According to the composition and the concentration of zinc-plated waste liquid, this patent has proposed a kind of easy and simple to handle, utilizes the method for device processes waste liquid in the laboratory.This patent does not add any catalyzer and only depends on id reaction, reclaims resource, handles objectionable impurities.
Concrete grammar of the present invention comprises following sequential steps:
A. remove organic impurity.Add the processing of 1～5mL/L hydrogen peroxide in waste liquid after, add 3～5g/L activated carbon treatment again, static after-filtration is removed;
B. the solution after step a being handled is cooled to about 0～10 ℃ with cooling piece, filters out solid matter, drying;
C. the NaHSO that adds 70～75mg/L in the solution after step b filters
3(reduction Cr
6+Be Cr
3+) and NaOH solid (the deposit C u of 300mg/L
2+, Cr
3+), the reaction that takes place in the waste liquid is as follows:
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 waste liquid, with the buried processing of throw out;
D. the solution after step c being filtered distills, and will distill the remaining solid in back and carry out buried processing;
Embodiment
Embodiment 1
Get the zinc-plated waste liquid of 1L, add 3mLH
2O
2After adding the 3g activated carbon treatment again, refrigeration is filtered and is obtained solid boric acid 20g to 0 ℃.In filtrate, add 70mg NaHSO
3Go out throw out with 300mgNaOH solid after-filtration, buried.Solution after filtering is distilled processing, make distilled water 0.85L.
Embodiment 2
Get the zinc-plated waste liquid of 1.5L, add 6mLH
2O
2After adding the 7g activated carbon treatment again, refrigeration is filtered and is obtained solid boric acid 28g to 5 ℃.In filtrate, add 110mg NaHSO
3Go out throw out with 450mgNaOH solid after-filtration, buried.Solution after filtering is distilled processing, make distilled water 1.3L.
Embodiment 3
Get the zinc-plated waste liquid of 2L, add 10mLH
2O
2After adding the 10g activated carbon treatment again, refrigeration is filtered and is obtained solid boric acid 35g to 10 ℃.In filtrate, add 150mg NaHSO
3Go out throw out with 550mgNaOH solid after-filtration, buried.Solution after filtering is distilled processing, make distilled water 1.9L.
Claims (4)
1. sylvite galvanized waste liquid cyclic utilization method in laboratory mainly may further comprise the steps:
A. add the processing of 1～5mL/L hydrogen peroxide in waste liquid after, add 3～5g/L activated carbon treatment again, static after-filtration is removed organic impurity;
B. the solution after step a being handled is cooled to about 0～10 ℃ with cooling piece, filters out solid matter, drying;
C. the NaHSO that adds 70～75mg/L in the solution after step b filters
3(reduction Cr
6+Be Cr
3+) and NaOH solid (the deposit C u of 300mg/L
2+, Cr
3+) after-filtration, with the buried processing of throw out;
D. the solution after step c being filtered distills, and will distill the remaining solid in back and carry out buried processing.
2. the sylvite galvanized waste liquid cyclic utilization method in a kind of laboratory according to claim 1 is characterized in that, step b uses the refrigeration agent sheet with near about 0～10 ℃ of solution temperature.
3. the sylvite galvanized waste liquid cyclic utilization method in a kind of laboratory according to claim 1 is characterized in that step c adds the NaHSO of 70～75mg/L in solution
3(reduction Cr
6+Be Cr
3+) and NaOH solid (the deposit C u of 300mg/L
2+, Cr
3+), filter, with the buried processing of throw out.
4. the sylvite galvanized waste liquid cyclic utilization method in a kind of laboratory according to claim 1 is characterized in that, solution is distilled processing, produces distilled water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105275341A CN102040304B (en) | 2010-11-02 | 2010-11-02 | Method for recycling waste liquor of zinc plating using potassium salt in laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105275341A CN102040304B (en) | 2010-11-02 | 2010-11-02 | Method for recycling waste liquor of zinc plating using potassium salt in laboratory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102040304A true CN102040304A (en) | 2011-05-04 |
| CN102040304B CN102040304B (en) | 2012-06-06 |
Family
ID=43906895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105275341A Expired - Fee Related CN102040304B (en) | 2010-11-02 | 2010-11-02 | Method for recycling waste liquor of zinc plating using potassium salt in laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102040304B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659276A (en) * | 2012-05-04 | 2012-09-12 | 山东建筑大学 | Method for comprehensively treating cyanided cadmium plating waste solution |
| CN107879527A (en) * | 2017-10-25 | 2018-04-06 | 无锡琨圣科技有限公司 | Waste water reclaiming device after a kind of making herbs into wool cleaning |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990015026A1 (en) * | 1989-05-30 | 1990-12-13 | Morico John L | Process for reduction of hexavalent chromium |
| US5316684A (en) * | 1989-05-30 | 1994-05-31 | Morico John L | Process for reduction of hexavalent chromium |
| CN101633538A (en) * | 2009-08-24 | 2010-01-27 | 杭州海拓环境工程有限公司 | Recycling and processing method of electroplating concentrated control zone mixed flow waste water resource |
| CN101811806A (en) * | 2010-04-29 | 2010-08-25 | 华南理工大学 | Method for treating mixed waste water of electroplating industry |
-
2010
- 2010-11-02 CN CN2010105275341A patent/CN102040304B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990015026A1 (en) * | 1989-05-30 | 1990-12-13 | Morico John L | Process for reduction of hexavalent chromium |
| US5316684A (en) * | 1989-05-30 | 1994-05-31 | Morico John L | Process for reduction of hexavalent chromium |
| CN101633538A (en) * | 2009-08-24 | 2010-01-27 | 杭州海拓环境工程有限公司 | Recycling and processing method of electroplating concentrated control zone mixed flow waste water resource |
| CN101811806A (en) * | 2010-04-29 | 2010-08-25 | 华南理工大学 | Method for treating mixed waste water of electroplating industry |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659276A (en) * | 2012-05-04 | 2012-09-12 | 山东建筑大学 | Method for comprehensively treating cyanided cadmium plating waste solution |
| CN107879527A (en) * | 2017-10-25 | 2018-04-06 | 无锡琨圣科技有限公司 | Waste water reclaiming device after a kind of making herbs into wool cleaning |
| CN107879527B (en) * | 2017-10-25 | 2021-02-26 | 无锡琨圣智能装备股份有限公司 | Waste water recovery device after cleaning of making herbs into wool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102040304B (en) | 2012-06-06 |
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Granted publication date: 20120606 Termination date: 20121102 |