CN102583842B - Recycling process of nickel in plating waste water - Google Patents
Recycling process of nickel in plating waste water Download PDFInfo
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- CN102583842B CN102583842B CN201110001664.6A CN201110001664A CN102583842B CN 102583842 B CN102583842 B CN 102583842B CN 201110001664 A CN201110001664 A CN 201110001664A CN 102583842 B CN102583842 B CN 102583842B
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Abstract
The invention discloses a resource treatment process for nickel-contained plating waste water, which belongs to the waste water treatment of a plating industry. The recycling process is divided into three steps: electro-deposition, adsorption and secondary electro-deposition, wherein the plating waste liquid is conveyed to an electro-deposition trough to be electro-deposited after the pH value is adjusted to a given number, after nickel content in the solution is reduced to a designated value, the solution is conveyed to an adsorption column to be adsorbed, the nickel content of the plating waste water after being treated is less than 1ppm, and partial waste water is returned to a plating procedure to use. The nickel in the plating waste liquid is recycled in a metal state. After the adsorption column is saturated, backwashing and reproduction are carried out, and secondary electro-deposition is undertaken on the backwashed solution to obtain the metal nickel.
Description
Technical field
The present invention relates to a kind of wastewater processing technology of electroplating industry, be specifically related to a kind of recovery and process for reclaiming thereof of nickel in waste electroplating water.
Background technology
The every annual meeting of electroplating industry produces a large amount of Ni-containing Plating Wastewaters, directly not still a kind of wasting of resources of discharge, and will cause great pollution to environment.Main use regulates the method for waste water pH value that nickel is precipitated at present.By this method, process nickel-containing waste water, be not only difficult to reach environment protection emission requirement, the nickeliferous product of gained because of nickel content low, recovery difficult is large.
Summary of the invention
Technical problem to be solved by this invention is: the Treating Electroplate Wastewater Containing Nickel recovery technology that provide that a kind of nickel organic efficiency is high, product purity reaches 99%, the content of nickel reaches discharging standards in the waste water after processing.
The technical solution adopted in the present invention is:
What this technology adopted electroplating cleaning water treatment recovery technology is step-by-step processing technology, i.e. electrodeposition-absorption-secondary electrodeposition technology, and concrete technical scheme is as follows:
A recovery process for nickel in waste electroplating water, whole technical process is divided into 3 steps, and first electrodeposition-absorption-secondary electrodeposition regulates electroplating effluent pH value to deliver to Winning cell electrodeposition to certain numerical value, obtains metallic nickel; In solution, nickel content is reduced to after designated value, and solution is sent to adsorption column absorption, and the electroplating wastewater nickel content after processing is less than 1ppm, and part waste water is turned back to electroplating work procedure carries out reuse; Nickel in electroplating effluent is recycled with metallic state; In adsorption column nickel saturated after, by backwash and regeneration, the solution that backwash obtains carries out secondary electrodeposition, obtains metallic nickel; Above-mentioned electrodeposition terminal nickel ion concentration is controlled at 0.2-0.5g/L; Adsorption column adopts reproducible cationic exchange coloum; Regeneration adopts sulphuric acid soln backwash and sodium hydroxide solution to make the transition; First by add concentration according to the manufacturing technique requirent of nickel electrodeposition, be sulfuric acid or the sodium hydroxide of 10-60%, the pH value of solution is adjusted between 2.5-6.5, Winning cell adopts rotating cathode Winning cell, and anode adopts coating titanium anode, the material selection metal titanium of negative electrode; In equipment, configure pH setting device to guarantee the cathode efficiency in electrolytic deposition process; Solution constantly circulates in electrolytic deposition process, when the nickel ion concentration of solution being reduced to 0.2-0.5g/L by an electrodeposition process, solution being drained into resin absorption operation and carry out adsorption treatment; Concrete electrodeposition process parameter is as follows: nickel ion initial concentration: 1-8g/L, cathode current density: 160-200A/m
2electric effusion temperature: 15-55 ℃, electric effusion speed of circulation: 10-100L/min, cathode rotary speed: 10～200r/min, pH: 2.5-6.5, electronickelling photo etching: appropriate, gloss-imparting agent: 8-15ml/L, agent walks: 5-8ml/L, fine sand agent: 0.5-1.5ml/L, rough sand agent: 0.5-1.5ml/L; Described being adsorbed as: resin absorption: adopt Zeo-karb; It is 3.0-5.0 that solution enters the front pH value of absorption, solution is 0.1-5m/h in the flow rate control of adsorption column, solution starts to change or to first adsorption column manipulation of regeneration after first adsorption column is saturated, regeneration adopts sulphuric acid soln backwash and sodium hydroxide solution to make the transition, and after absorption, solution is less than 1ppm containing heavy metal content; Described secondary electrodeposition is that resin absorption backwash solution containing nickel is carried out to electrodeposition processing, and secondary electrodeposition is processed recovery process parameter, technical indicator reclaims the same with an electrodeposition processing.
Accompanying drawing explanation
Fig. 1 is the processing technological flow schematic diagram of the mentioned a kind of Treating Electroplate Wastewater Containing Nickel of the present invention.
Embodiment
First by add concentration according to the manufacturing technique requirent of nickel electrodeposition, be sulfuric acid or the sodium hydroxide of 10-60%, the pH value of solution is adjusted between 2.5-6.5, Winning cell adopts rotating cathode Winning cell, and anode adopts coating titanium anode, the material selection metal titanium of negative electrode.In equipment, configure pH setting device to guarantee the cathode efficiency in electrolytic deposition process.Solution constantly circulates in electrolytic deposition process.When the nickel ion concentration of solution being reduced to 0.2-0.5g/L by an electrodeposition process, solution being drained into resin absorption operation and carry out adsorption treatment.Concrete electrodeposition process parameter is as follows:
Nickel ion initial concentration: 1-8g/L
Cathode current density: 160-200A/m
2
Electric effusion temperature: 15-55 ℃
Electric effusion speed of circulation: 10-100L/min
Cathode rotary speed: 10-200r/min
Solution pH value: 2.5-6.5
Electronickelling photo etching: appropriate
Gloss-imparting agent: 8-15ml/L
Agent walks: 5-8ml/L
Fine sand agent: 0.5-1.5ml/L
Rough sand agent: 0.5-1.5ml/L
Resin absorption: adopt Zeo-karb
It is 3.0-5.0 that solution enters the front pH value of absorption
Solution is 0.1-5m/h in the flow rate control of adsorption column
Solution starts to change after first adsorption column is saturated or to first adsorption column manipulation of regeneration, regeneration adopts sulphuric acid soln backwash and sodium hydroxide solution to make the transition, and after absorption, solution is less than 1ppm containing heavy metal content.
Secondary electrodeposition:
Secondary electrodeposition is that resin absorption backwash solution containing nickel is carried out to electrodeposition processing, secondary electrodeposition processes recovery process parameter and technical indicator reclaims substantially the same with an electrodeposition processing, nickel plating cleaning water is after secondary electrodeposition is processed recovery, and the total yield of nickel can reach 99%.
Treatment process of the present invention has reduced the discharge of electroplating wastewater greatly, and the metallic state with purity 99% reclaims by 99% nickel wherein, whole technique can be carried out in airtight environment, minimizing contacts with external environment, reduced pollution, in product, only have waste water and metal simultaneously, there is no mud, stop secondary pollution.
Those skilled in the art can carry out various changes and modification and not depart from aim of the present invention and scope invention, for example, backwash solution containing nickel is not done to electrodeposition and processed but be directly used in manufacture vitriol.If these are changed and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (1)
1. a recovery process for nickel in waste electroplating water, whole technical process is divided into 3 steps, and first electrodeposition-absorption-secondary electrodeposition regulates electroplating effluent pH value to deliver to Winning cell electrodeposition to certain numerical value, obtains metallic nickel; In solution, nickel content is reduced to after designated value, and solution is sent to adsorption column absorption, and the electroplating wastewater nickel content after processing is less than 1ppm, and part waste water is turned back to electroplating work procedure carries out reuse; Nickel in electroplating effluent is recycled with metallic state; In adsorption column nickel saturated after, by backwash and regeneration, the solution that backwash obtains carries out secondary electrodeposition, obtains metallic nickel; Above-mentioned electrodeposition terminal nickel ion concentration is controlled at 0.2-0.5g/L; Adsorption column adopts reproducible cationic exchange coloum; Regeneration adopts sulphuric acid soln backwash and sodium hydroxide solution to make the transition; It is characterized in that: by add concentration according to the manufacturing technique requirent of nickel electrodeposition, be first sulfuric acid or the sodium hydroxide of 10-60%, the pH value of solution is adjusted between 2.5-6.5, Winning cell adopts rotating cathode Winning cell, and anode adopts coating titanium anode, the material selection metal titanium of negative electrode; In equipment, configure pH setting device to guarantee the cathode efficiency in electrolytic deposition process; Solution constantly circulates in electrolytic deposition process, when the nickel ion concentration of solution being reduced to 0.2-0.5g/L by an electrodeposition process, solution being drained into resin absorption operation and carry out adsorption treatment; Concrete electrodeposition process parameter is as follows: nickel ion initial concentration: 1-8g/L, cathode current density: 160-200A/m2, electric effusion temperature: 15-55 ℃, electric effusion speed of circulation: 10-100L/min, cathode rotary speed: 10～200r/min, pH: 2.5-6.5, electronickelling photo etching: appropriate, gloss-imparting agent: 8-15ml/L, agent walks: 5-8ml/L, fine sand agent: 0.5-1.5ml/L, rough sand agent: 0.5-1.5ml/L; Described being adsorbed as: resin absorption: adopt Zeo-karb; It is 3.0-5.0 that solution enters the front pH value of absorption, solution is 0.1-5m/h in the flow rate control of adsorption column, solution starts to change or to first adsorption column manipulation of regeneration after first adsorption column is saturated, regeneration adopts sulphuric acid soln backwash and sodium hydroxide solution to make the transition, and after absorption, solution is less than 1ppm containing heavy metal content; Described secondary electrodeposition is that resin absorption backwash solution containing nickel is carried out to electrodeposition processing, and secondary electrodeposition is processed recovery process parameter, technical indicator reclaims the same with an electrodeposition processing.
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| CN201110001664.6A CN102583842B (en) | 2011-01-06 | 2011-01-06 | Recycling process of nickel in plating waste water |
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| CN102583842B true CN102583842B (en) | 2014-04-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532293B (en) * | 2014-12-22 | 2017-06-09 | 无锡市瑞思科环保科技有限公司 | The method of purifying nickel and nickel purifying plant in chemical nickel plating waste solution |
| CN107651733A (en) * | 2016-07-26 | 2018-02-02 | 中国科学院生态环境研究中心 | A kind of method that rotating cathode strengthens photoelectrocatalysioxidization oxidization processing complex state heavy metal wastewater thereby and negative electrode recovery heavy metal |
| CN106757150A (en) * | 2016-11-16 | 2017-05-31 | 天津碧水源膜材料有限公司 | A kind of method that copper in contained waste liquid is reclaimed using absorption and electro-deposition group technology |
| CN108360056A (en) * | 2018-03-27 | 2018-08-03 | 台州市宏民环保科技有限公司 | A kind of electro-coppering is water-saving and the method for copper recycling |
| CN108396365A (en) * | 2018-03-27 | 2018-08-14 | 台州市宏民环保科技有限公司 | A kind of electronickelling is water-saving and the method for nickel recycling |
| CN109852995B (en) * | 2019-01-23 | 2021-03-05 | 郑宏 | Process for producing electrolytic nickel by ion exchange-electrolysis combined method |
| CN115156161A (en) * | 2021-04-07 | 2022-10-11 | 台州善敏机械有限公司 | Electroplated part washing method and electroplating method |
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| US20060219574A1 (en) * | 2005-04-05 | 2006-10-05 | Rahman Sleem U | Integrated electrolytic-electrodialytic apparatus and process for recovering metals from metal ion-containing waste streams |
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| TW200811060A (en) * | 2006-08-21 | 2008-03-01 | Mitac Prec Technology Corp | Method of recycle and treatment of used chemical nickel plating electrolyte |
| CN101717135A (en) * | 2009-12-04 | 2010-06-02 | 浙江师范大学 | Method for treating nickel-containing electroplating wastewater and recovering nickel by electrolysis |
| CN101921032A (en) * | 2010-09-10 | 2010-12-22 | 北京大学 | Electrolytic deposition-membrane separation combined treatment device for electrolytic zinc rinse wastewater |
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Patent Citations (6)
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| CN1796312A (en) * | 2004-12-20 | 2006-07-05 | 上海轻工业研究所有限公司 | Method for recovering nickel and removing impurity from nickel-plated wastewater |
| US20060219574A1 (en) * | 2005-04-05 | 2006-10-05 | Rahman Sleem U | Integrated electrolytic-electrodialytic apparatus and process for recovering metals from metal ion-containing waste streams |
| CN2841682Y (en) * | 2005-11-11 | 2006-11-29 | 河南卡斯通科技有限公司 | Multi-anode, rotary cathode electrolytic tank |
| TW200811060A (en) * | 2006-08-21 | 2008-03-01 | Mitac Prec Technology Corp | Method of recycle and treatment of used chemical nickel plating electrolyte |
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