CN108396365A - A kind of electronickelling is water-saving and the method for nickel recycling - Google Patents
A kind of electronickelling is water-saving and the method for nickel recycling Download PDFInfo
- Publication number
- CN108396365A CN108396365A CN201810257213.0A CN201810257213A CN108396365A CN 108396365 A CN108396365 A CN 108396365A CN 201810257213 A CN201810257213 A CN 201810257213A CN 108396365 A CN108396365 A CN 108396365A
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- CN
- China
- Prior art keywords
- nickel
- water
- nickel ion
- concentration
- ion
- 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.)
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Classifications
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- 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
- C25D21/18—Regeneration of process solutions of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Abstract
A kind of electronickelling is water-saving and the method for nickel recycling, continuous cyclic electrolysis is carried out by the way that the higher nickel-containing waste water of accumulator tank concentration is pumped to low concentration electrolytic metal equipment, nickel ion can be averaged and drop to 8g/L from 44g/L, calculating accordingly can retain 80% nickel ion and directly produce qualified electrolytic nickel product, and reduce the concentration that nickel ion is transferred to next potcher；First potcher after accumulator tank installs filter plant additional, nickel ion interception rate is set to reach 99% or more, nickel sulfate dope after concentration returns to a upper accumulator tank and continues electrolytic nickel, and nickel ion is less than 1mg/L in equipment water outlet, micro nickel ion is discharged into waste water processing station with poaching wastewater, and a small amount of nickel-containing sludge can be formed after being simply chemically treated.By two above step, nickel ion concentration of emission is less than 1mg/L, is far below 100 mg/Ls of original rinsing process by a large amount of tap water rinse heel row toward waste water station.
Description
Technical field
The present invention relates to field of environment protection more particularly to a kind of electronickelling be water-saving and the method for nickel recycling.
Background technology
The universal practice of Domestic Plating production line is an accumulator tank to be arranged behind electroplating bath, by the portion of very little at present
The accumulator tank cleaning solution for dividing concentration larger returns to electroplating bath and supplements electroplate liquid, and most cell liquids are discharged to waste water as waste water
Station is handled.
Since accumulator tank concentration of nickel sulfate is higher, hanger and plating piece bring high-concentration waste water into next potcher, cause
Concentration of nickel sulfate is rinsed in 1 slot to be continuously improved, it is same because 1 slot concentration of rinsing is continuously improved, cause 2 slots of rinsing and later
The concentration for rinsing 3 slots increases, it is necessary to by using largely originally water washing could reduce nickel ion into next plating production
Link, this is the principal element for causing water consumption high.
It is of the existing technology the disadvantage is that：
1, cause valuable nickel resources that waste water is taken as to enter waste water station, handle it is up to standard during need to add caustic soda, PAM,
The medicaments such as PAC, the link by the complexity such as stirring, precipitation, press filtration eventually pass through waste water treatment process and become nickel-containing sludge, according to
《National Hazard waste register》, nickel-containing sludge is listed in the hazardous waste of HW17 classes, is to be classified as the second pollutant；Meanwhile
This handles process up to standard and needs the facilities such as the collecting pit of investment construction enough capacity, processing pond, is equipped with the stirring of enough power
The equipment such as machine, filter press spend prodigious electric power, artificial operating cost that the processing of the nickel-containing waste water of generation is up to standard.
2, it after nickel-containing sludge is according to current waste water treatment process press filtration, is limited by filtering equipment currently on the market, usually
Moisture percentage in sewage sludge causes sludge volume larger 80% or so, and great inconvenience is caused to sewage sludge storage, transport and disposition link.
3, nickel-containing sludge is listed in the stringent pipe needed after the hazardous waste of HW17 classes according to environmental protection administration to hazardous waste
Reason all establishes stringent receipts or other documents in duplicate management from the generation of nickel-containing sludge, transport, disposition, and each link is required for having related money
The enterprise of matter could execute, and avoid in storage, transport and disposal process causing dirt after probably due to the entrance environment such as leak, spread
Dye.
4, after finally reaching the enterprise with the related qualification of dangerous disposition, according to existing technique, it usually needs use sulfuric acid
Sludge is dissolved, nickel sulfate solution is made in nickel leaching, after impurity and purification, nickel salt series of products or production is made
Electrolytic nickel, and since moisture percentage in sewage sludge is very high, causing sludge treatment enterprise still has prodigious quantity of wastewater effluent and a small amount of tail
Slag needs to discharge.
In short, existing production technology can cause a large amount of nickel-containing waste water, sewage treatment process and sludge treatment technique are given
Huge difficulty and cost of disposal are caused, huge waste and pollution risk are all caused to environment and enterprise.
Invention content
The purpose of the present invention is to solve disadvantage existing in the prior art, and a kind of electronickelling for proposing is water-saving and nickel
The method of recycling.
To achieve the goals above, present invention employs following technical solutions：
A kind of electronickelling is water-saving and the method for nickel recycling, first, low by the way that the higher nickel-containing waste water of accumulator tank concentration to be pumped to
Concentration electrolytic metal equipment carries out continuous cyclic electrolysis, and nickel ion can be averaged and drop to 8g/L from 44g/L, and calculating accordingly can
80% nickel ion is retained and directly produces qualified electrolytic nickel product, and reduces nickel ion and is transferred to next potcher
Concentration；
Secondly, first potcher after accumulator tank installs filter plant additional, and nickel ion interception rate is made to reach 99% or more, dense
Nickel sulfate dope after contracting returns to a upper accumulator tank and continues electrolytic nickel, and nickel ion is less than 1mg/L in equipment water outlet, micro
Nickel ion and poaching wastewater are discharged into waste water processing station, further across can form a small amount of nickeliferous dirt after simple chemical treatment
Mud.
After two above step, nickel ion concentration of emission is less than 1mg/L, well below original rinsing process through excessive
Tap water rinse heel row is measured toward 100 mg/L of waste water station, concentration of emission reduction by 99%, it is meant that most nickel resources are intercepted
Afterwards and realize recycling.
The method of the present invention can save rinsing water about 95% or more to be reduced in accumulator tank by cyclic electrolysis nickel technique
80% nickel ion is discharged into down one of potcher, then by filter plant, further the nickel ion recycling by 99% and recycling, then
By the original three-level countercurrent rinsing system of production line, about 95% originally water consumption can be saved and be discharged into the Nickel-bearing Waste of waste water station
Water.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention can be such that rinsing water concentration is greatly lowered, can reduce rinsing water by the nickel resources of retention accumulator tank 99%
95% or more amount can largely reduce sewage disposal expense and new benefit tap water water rate.The charge of Zhejiang Province's electroplating wastewater disposition at present is per ton
About 50 yuan, usually each electroplating enterprise nickel-containing waste water accounts for the 10~15% of total Water, and sewage disposal expense can be saved by reducing discharge of wastewater
Tap water water rate is mended with new.
2, the present invention can reduce 99% or more copper metal loss, reduce nickel resources waste, generated after deduction operating cost
Benefit can partly make up Environmental Inputs.
3, the present invention can generate the hydrochloric acid of the pure sulfuric acid and 0.12 times of weight of 1.5 times of recycling pure nickel weight, can return to electricity
Coating bath recycles, and reduces the magnitude of recruitment of eo-acid.
4, the present invention can effectively mitigate nickel ion and bring harmful effect of the electrodeposited chromium slot to plating piece product quality into.
5, the present invention can effectively reduce organic matter（Nickel brightener）Harmful effect to electrodeposited chromium production technology link.
6, this programme has fully demonstrated " innoxious, minimizing and recycling ", there is good economic benefit and social benefit.
7, the present invention program complies fully with《Electroplating industry cleaner production apprasement index system》（National development and reform committee member
Meeting, Environmental Protection Department, the Ministry of Industry and Information Technology's No. 25 bulletin in 2015）Required by I grade of standard：" use metal recovery work
Skill ", " unit product cleans the L/m2 of water withdrawal≤8 every time ", " copper utilization rate >=90% ", " electroplating water recycling rate of waterused >=
60% ", " reduce unit product heavy metal contaminants yield measure include：Increase plating solution accumulator tank, online or recycling offline
Five standards of heavy metal etc. ".
Description of the drawings
Fig. 1 emission reduction of nickel heavy metal wastewater thereby and recycling schematic diagram in the prior art.
Fig. 2 is that a kind of electronickelling proposed by the present invention is water-saving and the method schematic diagram of nickel recycling.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
A kind of electronickelling is water-saving and the method for nickel recycling, first, by pumping the higher nickel-containing waste water of accumulator tank concentration
Continuous cyclic electrolysis is carried out to low concentration electrolytic metal equipment（If traditional slot type electrolytic nickel nickel ion concentration is less than 40g/L
When electrolysis can not be normally carried out, and can to ensure that nickel ion is normally produced in 5~8g/L qualified for my company's electrolysis installation
Electrolytic nickel product）, nickel ion can be averaged and drop to 8g/L from 44g/L, accordingly calculate can by 80% nickel ion retention and it is straight
Output of delivering a child qualification electrolytic nickel product, and reduce the concentration that nickel ion is transferred to next potcher.
Secondly, first potcher after accumulator tank installs filter plant additional, make nickel ion interception rate reach 99% with
On, the nickel sulfate dope after concentration returns to a upper accumulator tank and continues electrolytic nickel, and nickel ion is less than 1mg/L in equipment water outlet,
Micro nickel ion is discharged into waste water processing station with poaching wastewater, further across can form a small amount of contain after simple chemical treatment
Nickel sludge.
After two above step, nickel ion concentration of emission is less than 1mg/L, well below original rinsing process through excessive
100 mg/Ls of the amount tap water rinse heel row toward waste water station（Because most of sewage disposal system design highest influent qualities are at present
100 mg/L, therefore a large amount of tap water is needed to go to dilute）, concentration of emission reduction by 99%, it is meant that after most nickel resources are intercepted
And realize recycling.
The method of the present invention can save rinsing water about 95% or more, and the nickel based on twice my company's independent researches retains equipment,
In accumulator tank by cyclic electrolysis nickel technique, the nickel ion for reducing 80% is discharged into down one of potcher, then by filter plant,
Further the nickel ion recycling by 99% and recycling, make a large amount of rinse waters needed for former technique be greatly lowered, then pass through production
The original three-level countercurrent rinsing system of line, it is only necessary to which 5% tap water of water can be obtained before more preferably rinses than former technique
Effect can save about 95% originally water consumption and be discharged into the Nickel-bearing Waste water of waste water station.
This method can greatly save eo-acid magnitude of recruitment, and based on the low concentration cupric electrolysis equipment of my company's independent research, original is returned
Receive the nickel sulfate (chemical formula in slot:NiSO4), nickel chloride (chemical formula:NiCl2 it) is constantly deposited on the cathode of equipment, according to
The hydrochloric acid of the pure nickel for calculating often 1 kilogram of recycling, the sulfuric acid and 0.12 times of weight that just have 1.57 times of weight of nickel generates.According to former work
Part sulfur acid and the higher nickel sulfate solution of concentration of hydrochloric acid are periodically supplemented telegram in reply coating bath by skill, can partly reduce eo-acid supplement
Amount, can save the amount of purchase of eo-acid to reduce production cost.
The present invention can also reduce harmful effect of the nickel ion to chrome-plated process link, the impurity such as nickel, copper in Cr-plating Bath
Concentration is higher, and electroless nickel layer quality can have a great impact.When not washed clean such as plating piece drift, the impurity such as nickel, copper can be to electrodeposited chromium
Cause harmful effect.When nickel ion content reaches 25mg/L or more in chromium plating liquid, enable coating thinning, Deposit appearance meeting
Go out jaundice, the problems such as low area edge color fringe occurs, can occur at low current density position, and covering power declines.
So periodically by impurity such as zinc, nickel, iron, copper by being electrolysed and being added the removal of the means such as cleaner in former technique, with
Mitigate the harmful effects of the impurity to follow-up electrodeposited chromium such as nickel ion.
It is cut by a kind of low concentration cupric electrolysis equipment of my company's independent research and a kind of filter plant based on 99% nickel ion
It stays and realizes resource utilization, the probability that nickel ion enters electrodeposited chromium slot can be greatly lowered, have to promoting plating piece product quality
Certain benefit.
Harmful effect of the organic impurities to electrodeposited chromium production technology link can be reduced using the method for the present invention, because of chromium plating solution
After being polluted by nickel plating brightener, coating would generally shade, and irregular pattern occurs in surface, can also enable coating thinning even when serious
Chromium is not plated, nickel plating brightener is typically some organic matters.
Low concentration nickel electrowinning equipment based on my company's independent research will produce the oxygen of higher concentration while electrolytic nickel
Agent, can be to the organic matter brought into potcher（Nickel brightener）It is aoxidized, passes through my company's independent research in practice
The continuous cycle of low concentration nickel electrowinning equipment has cut down most organic matter in rinsing, and foam significantly reduces, to improving plating piece
Product quality has certain benefit.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of electronickelling is water-saving and the method for nickel recycling, which is characterized in that first, by the way that accumulator tank concentration is higher nickeliferous
Waste water is pumped to low concentration electrolytic metal equipment and carries out continuous cyclic electrolysis, and nickel ion can be averaged and drop to 8g/ from 44g/L
L, calculating accordingly can retain 80% nickel ion and directly produce qualified electrolytic nickel product, and reduces nickel ion and be transferred to down
The concentration of one potcher；
Secondly, first potcher after accumulator tank installs filter plant additional, and nickel ion interception rate is made to reach 99% or more, dense
Nickel sulfate dope after contracting returns to a upper accumulator tank and continues electrolytic nickel, and nickel ion is less than 1mg/L in equipment water outlet, micro
Nickel ion and poaching wastewater are discharged into waste water processing station, further across can form a small amount of nickeliferous dirt after simple chemical treatment
Mud.
2. a kind of electronickelling according to claim 1 is water-saving and the method for nickel recycling, which is characterized in that pass through two above
After step, nickel ion concentration of emission is less than 1mg/L, past useless by a large amount of tap water rinse heel row well below original rinsing process
100 mg/L of water station, concentration of emission reduce by 99%, it is meant that after most nickel resources are intercepted and realize recycling.
3. a kind of electronickelling according to claim 1 is water-saving and the method for nickel recycling, which is characterized in that the method for the present invention can
Rinsing water about 95% or more is saved, in accumulator tank by cyclic electrolysis nickel technique, reduces 80% nickel ion and is discharged into down one
Potcher, then by filter plant, 99% nickel ion is further recycled into simultaneously recycling, then pass through the original three-level of production line
Countercurrent rinsing system can save about 95% originally water consumption and be discharged into the Nickel-bearing Waste water of waste water station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257213.0A CN108396365A (en) | 2018-03-27 | 2018-03-27 | A kind of electronickelling is water-saving and the method for nickel recycling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257213.0A CN108396365A (en) | 2018-03-27 | 2018-03-27 | A kind of electronickelling is water-saving and the method for nickel recycling |
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| Publication Number | Publication Date |
|---|---|
| CN108396365A true CN108396365A (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810257213.0A Pending CN108396365A (en) | 2018-03-27 | 2018-03-27 | A kind of electronickelling is water-saving and the method for nickel recycling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608011A (en) * | 2018-11-20 | 2019-04-12 | 台州市宏民环保科技有限公司 | A method of plating cupro-nickel mixing sludge resource utilization utilizes |
| CN112593276A (en) * | 2020-12-07 | 2021-04-02 | 娄底市安地亚斯电子陶瓷有限公司 | Nickel plating process based on different thicknesses of metal layers at different positions of same ceramic |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139659A (en) * | 2007-10-24 | 2008-03-12 | 上海轻工业研究所有限公司 | Method for reclaiming nickel from acidic nickel plating waste water |
| CN201250155Y (en) * | 2008-05-30 | 2009-06-03 | 东莞市威迪膜科技有限公司 | System for treating and recovering plating rinsing wastewater |
| CN102583842A (en) * | 2011-01-06 | 2012-07-18 | 湖南万容科技股份有限公司 | Recycling process of nickel in plating waste water |
| CN103420438A (en) * | 2012-05-22 | 2013-12-04 | 泰州宏瑞新材料有限责任公司 | Electroplating-rinse-water recycling and reusing method |
| CN104418408A (en) * | 2013-08-30 | 2015-03-18 | 上海轻工业研究所有限公司 | Copper-electroplating wastewater treatment method and copper-electroplating wastewater treatment equipment |
-
2018
- 2018-03-27 CN CN201810257213.0A patent/CN108396365A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101139659A (en) * | 2007-10-24 | 2008-03-12 | 上海轻工业研究所有限公司 | Method for reclaiming nickel from acidic nickel plating waste water |
| CN201250155Y (en) * | 2008-05-30 | 2009-06-03 | 东莞市威迪膜科技有限公司 | System for treating and recovering plating rinsing wastewater |
| CN102583842A (en) * | 2011-01-06 | 2012-07-18 | 湖南万容科技股份有限公司 | Recycling process of nickel in plating waste water |
| CN103420438A (en) * | 2012-05-22 | 2013-12-04 | 泰州宏瑞新材料有限责任公司 | Electroplating-rinse-water recycling and reusing method |
| CN104418408A (en) * | 2013-08-30 | 2015-03-18 | 上海轻工业研究所有限公司 | Copper-electroplating wastewater treatment method and copper-electroplating wastewater treatment equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608011A (en) * | 2018-11-20 | 2019-04-12 | 台州市宏民环保科技有限公司 | A method of plating cupro-nickel mixing sludge resource utilization utilizes |
| CN112593276A (en) * | 2020-12-07 | 2021-04-02 | 娄底市安地亚斯电子陶瓷有限公司 | Nickel plating process based on different thicknesses of metal layers at different positions of same ceramic |
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Application publication date: 20180814 |