CN109306480A - A kind of processing method of waste electroplating liquor containing chromium - Google Patents
A kind of processing method of waste electroplating liquor containing chromium Download PDFInfo
- Publication number
- CN109306480A CN109306480A CN201811339103.5A CN201811339103A CN109306480A CN 109306480 A CN109306480 A CN 109306480A CN 201811339103 A CN201811339103 A CN 201811339103A CN 109306480 A CN109306480 A CN 109306480A
- Authority
- CN
- China
- Prior art keywords
- plating
- chromium
- coarsening solution
- waste water
- nickel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
- C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
Abstract
The present invention relates to a kind of processing methods of waste electroplating liquor containing chromium, plating chromium process includes oil removing, roughening, twice reduction, palladium activation, dispergation, plating chemical nickel, copper pre-plating, copper facing, acid activation, half bright nickel of plating, bright nickel plating, nickel envelope, chromium plating, reduction and baking process, next process is wherein entered by washing after previous procedure, it is roughened in process, in coarsening solution when chromic acid concentration to lower limit, the concentrate that chromate waste water recovery process obtains is added into coarsening solution, until coarsening solution concentration meets original content requirement；Sulfate radical is supreme in limited time in coarsening solution, and barium carbonate adjustment sulfate radical is added into coarsening solution and meets original content requirement.The present invention has the advantages that the present invention can reduce content of chromium ion in waste water, chromate waste water discharge amount and cost for wastewater treatment.
Description
Technical field
The invention belongs to electroplating waste water treatment technology field, in particular to a kind of processing method of waste electroplating liquor containing chromium.
Background technique
A large amount of chromate waste water, chromate waste water are discharged daily in industries such as metallurgical industry, plating, process hides, paint, photographs
In chromium mainly with sexavalence (Cr6+) and trivalent (Cr3+) form presence.
Existing electroplating wastewater is discharged generally according to discharge standard, and the chromium ion in waste water is lost with waste water, is caused
Waste.
Therefore, be badly in need of research and develop one kind can reduce content of chromium ion in waste water, chromate waste water discharge amount and wastewater treatment at
The processing method of this waste electroplating liquor containing chromium.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind can reduce content of chromium ion in waste water, chromate waste water discharge
The processing method of the waste electroplating liquor containing chromium of amount and cost for wastewater treatment.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of processing method of waste electroplating liquor containing chromium, described
Plating chromium process includes oil removing, roughening, twice reduction, palladium activation, dispergation, plating chemical nickel, copper pre-plating, copper facing, acid activation, plating half
Bright nickel, bright nickel plating, nickel envelope, chromium plating, reduction and baking process, wherein entering lower one of work by washing after previous procedure
Sequence, innovative point are: the coarsening solution in the roughening process includes the sulfuric acid of 390~430g/L and the chromium of 380~400g/L
Acid after being roughened process, increases chromate waste water recovery process, by being concentrated by evaporation, obtains concentrate and recycle-water；It is roughened process
In, in coarsening solution when chromic acid concentration to lower limit, the concentrate that chromate waste water recovery process obtains is added into coarsening solution, until thick
Change liquid concentration and meets original content requirement；Sulfate radical is supreme in limited time in coarsening solution, and barium carbonate adjustment sulfate radical is added into coarsening solution
Meet original content requirement.
Further, the total mass concentration of chromium is 1400~1600mg/L in the chromate waste water.
The present invention has the advantages that the processing method of waste electroplating liquor containing chromium of the present invention, in existing electroplating technology, increase contains
The concentrate that recycling obtains is carried out roughening and added by chromium Sewage treatment process, can well be utilized chromic acid and retrieval of sulfuric acid,
It avoids chromium ion from being lost, can be effectively reduced content of chromium ion in waste water, and then reduce the discharge amount of chromate waste water, and can have
Effect reduces cost for wastewater treatment.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described range.
Embodiment
The processing method of the present embodiment waste electroplating liquor containing chromium, plating chromium process includes oil removing, roughening, twice restore, palladium is lived
Change, dispergation, plating chemical nickel, copper pre-plating, copper facing, acid activation, half bright nickel of plating, bright nickel plating, nickel envelope, chromium plating, reduction and baking process,
Next process is wherein entered by washing after previous procedure.
Coarsening solution in roughening process includes the sulfuric acid of 390~430g/L and the chromic acid of 380~400g/L, is roughened process
Afterwards, the total mass concentration for obtaining chromium is the chromate waste water of 1500mg/L, and by chromate waste water by being concentrated by evaporation, it is solid to obtain concentrate
Body chromic acid and recycle-water；It is roughened in process, when chromic acid concentration is to 380g/L in coarsening solution, chromate waste water is added into coarsening solution and is returned
The concentrate solid chromic acid that sequence of knocking off obtains, until chromium ion concentration meets 380~400g/L in coarsening solution；Sulfuric acid in coarsening solution
When root is to 430g/L, barium carbonate adjustment sulfate radical is added into coarsening solution and meets 390~430g/L.
Comparative example
The processing method of the present embodiment waste electroplating liquor containing chromium, plating chromium process includes oil removing, roughening, twice restore, palladium is lived
Change, dispergation, plating chemical nickel, copper pre-plating, copper facing, acid activation, half bright nickel of plating, bright nickel plating, nickel envelope, chromium plating, reduction and baking process,
Next process is wherein entered by washing after previous procedure.
After being roughened process, the total mass concentration for obtaining chromium is the chromate waste water of 1500mg/L, is arranged according to discharge standard
It puts.
In order to protrude waste electroplating liquor containing chromium of the present invention processing method advantage, will treated gives up containing chromium by embodiment
Water with by comparative example, treated that chromate waste water compares, comparing result see the table below:
| Comparative example | Embodiment | |
| Chromium content in waste water | 1500mg/L | 400mg/L |
| Chromium wastewater discharge | 40t/ days | 20t/ days |
| Cost for wastewater treatment | 15840 yuan/month | 7920 yuan/month |
As can be seen from the above table, the processing method of waste electroplating liquor containing chromium through the invention can well return chromium ion
It receives and utilizes, chromium ion is avoided to be lost, can be effectively reduced content of chromium ion in waste water, and then reduce the discharge amount of chromate waste water,
And it can be effectively reduced cost for wastewater treatment.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (2)
1. a kind of processing method of waste electroplating liquor containing chromium, the plating chromium process include oil removing, roughening, twice reduction, palladium activation,
Dispergation, plating chemical nickel, copper pre-plating, copper facing, acid activation, half bright nickel of plating, bright nickel plating, nickel envelope, chromium plating, reduction and baking process,
In next process is entered by washing after previous procedure, it is characterised in that: the coarsening solution packet in the roughening process
The sulfuric acid of 390~430g/L and the chromic acid of 380~400g/L are included, after being roughened process, increases chromate waste water recovery process, passes through steaming
Hair concentration, obtains concentrate and recycle-water；It is roughened in process, in coarsening solution when chromic acid concentration to lower limit, is added into coarsening solution
The concentrate that chromate waste water recovery process obtains, until coarsening solution concentration meets original content requirement；Sulfate radical is supreme in coarsening solution
In limited time, barium carbonate adjustment sulfate radical is added into coarsening solution meets original content requirement.
2. the processing method of waste electroplating liquor containing chromium according to claim 1, it is characterised in that:
The total mass concentration of chromium is 1400~1600mg/L in the chromate waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339103.5A CN109306480A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of waste electroplating liquor containing chromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811339103.5A CN109306480A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of waste electroplating liquor containing chromium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109306480A true CN109306480A (en) | 2019-02-05 |
Family
ID=65221886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811339103.5A Pending CN109306480A (en) | 2018-11-12 | 2018-11-12 | A kind of processing method of waste electroplating liquor containing chromium |
Country Status (1)
| Country | Link |
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| CN (1) | CN109306480A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529935B2 (en) * | 1973-08-07 | 1980-08-07 | ||
| CN101575119A (en) * | 2009-05-27 | 2009-11-11 | 无锡市星亿涂装环保设备有限公司 | Method for recovering chromic acid and water from chromeplating rinse water |
| CN103232098A (en) * | 2013-04-23 | 2013-08-07 | 中国科学院海洋研究所 | Method for improving marine brown tide removing efficiency of PAC (Polyaluminium Chloride) modified clay |
| CN103991976A (en) * | 2014-03-24 | 2014-08-20 | 厦门市韩江环保科技有限公司 | Treatment and recycling method for chromium-containing wastewater |
| CN108642554A (en) * | 2018-06-22 | 2018-10-12 | 浙江科技学院 | A kind of online trough rim recycling of plastic plating Roughing Solution and round-robin method and its use system |
-
2018
- 2018-11-12 CN CN201811339103.5A patent/CN109306480A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529935B2 (en) * | 1973-08-07 | 1980-08-07 | ||
| CN101575119A (en) * | 2009-05-27 | 2009-11-11 | 无锡市星亿涂装环保设备有限公司 | Method for recovering chromic acid and water from chromeplating rinse water |
| CN103232098A (en) * | 2013-04-23 | 2013-08-07 | 中国科学院海洋研究所 | Method for improving marine brown tide removing efficiency of PAC (Polyaluminium Chloride) modified clay |
| CN103991976A (en) * | 2014-03-24 | 2014-08-20 | 厦门市韩江环保科技有限公司 | Treatment and recycling method for chromium-containing wastewater |
| CN108642554A (en) * | 2018-06-22 | 2018-10-12 | 浙江科技学院 | A kind of online trough rim recycling of plastic plating Roughing Solution and round-robin method and its use system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190205 |
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| RJ01 | Rejection of invention patent application after publication |