CN103088364A - Recycling method of copper foil production wastewater - Google Patents
Recycling method of copper foil production wastewater Download PDFInfo
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- CN103088364A CN103088364A CN2013100488364A CN201310048836A CN103088364A CN 103088364 A CN103088364 A CN 103088364A CN 2013100488364 A CN2013100488364 A CN 2013100488364A CN 201310048836 A CN201310048836 A CN 201310048836A CN 103088364 A CN103088364 A CN 103088364A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to the technical field of copper foil production, and discloses a recycling method of copper foil production wastewater. The method comprises the following steps of: concentrating the copper foil production wastewater until the concentration of copper ions is over 1g/l; adding an extraction agent and kerosene in the concentrated liquid which serves as an extracting feed liquid for extraction; after extraction, loading an organic phase as barren liquor, adding180-220g/L sulfuric acid liquid to carry out back extraction to obtain enriched electrolyte; and carrying out an electrolytic reaction to obtain finished copper by using electrified copper bars as a cathode and an anode, wherein the extraction agent is an alkyl benzene oxime mixture,the organic phase is formed by the extraction agent and the kerosene in a mass ratio of 1:(4-6), the volume ratio of the organic phase to the extracting feed liquid is (1-2):1, and the volume ratio of the barren liquor to the sulfuric acid liquid is (1-2):1. According to the method, copper in low-concentration copper foil production wastewater can be enriched by utilizing an extraction-back extraction reaction, and the copper in the wastewater is extracted by utilizing the electrolytic reaction with high extraction efficiency; and daily wastewater treatment is 120m<3>, copper electrolyzed and extracted each month can be 7 to 8 tons, and RMB 0.5 millions of economic benefit can be generated.
Description
Technical field
The invention belongs to the Copper Foil production technical field, be specifically related to a kind of recoverying and utilizing method of Copper Foil factory effluent.
Background technology
The Copper Foil production technique has living paper tinsel and surface treatment twice important procedure, has produced in process of production a large amount of waste water.The copper that contains lower concentration in waste water utilizes the replacement(metathesis)reaction of displacement pool at first, recycles the copper of lower concentration in waste water, and the efficient of recycling is low, and deficiency in economic performance can not meet the requirement of environmental protection.For this reason, demand researching and developing a kind of extraction efficiency urgently high, can have again the recovery method of environment protection in mind.
Summary of the invention
The object of the present invention is to provide a kind of extraction efficiency high, can have again the recoverying and utilizing method of the Copper Foil factory effluent of environment protection in mind.
For achieving the above object, the technical scheme taked of the present invention is as follows:
A kind of recoverying and utilizing method of Copper Foil factory effluent: the Copper Foil factory effluent is concentrated into copper ion concentration more than 1g/l, after concentrated, solution is as the extraction feed liquid, add extraction agent and kerosene to extract, after extraction, load organic phases adds the sulphuric acid soln of concentration 180-220g/L to strip as lean solution, obtains enrichment electrolytic solution, as anode and cathode, obtain finished product copper through electrolytic reaction with the copper bar energising; Wherein, described extraction agent is alkylbenzene oxime mixture, and extraction agent and kerosene form organic phase with mass ratio 1:4-6, and the volume ratio of organic phase and extraction feed liquid is 1-2:1, and the volume ratio of lean solution and sulphuric acid soln is 1-2:1.
Further, the solution reuse after electrolytic reaction repeats to recycle to initial extraction feed liquid.
Further again, the remaining liquid after extraction is discharged in displacement pool, utilizes the remaining copper in the iron substitutional solution.
Beneficial effect of the present invention:
1, utilize the extracting-back extraction negate to answer copper in enriching low-concentration Copper Foil factory effluent, the technology of Cu in waste water is extracted in the recycling electrolytic reaction, and extraction efficiency is high, day processes wastewater flow rate large.Waste water after treatment, the content of copper obviously reduces, and is the clean new technology of efficient-cleaning-recycle, accomplishes both to have in mind environment protection, pays attention to again resource and reclaims, and environment protection and economic benefit, social benefit are organically combined.
2, after the present invention uses, day processing waste water 120m
3, satisfying Production requirement fully, electrowinning copper can reach the 7-8 ton per month, and producing economic benefit has 500,000 yuan.The effective protection of the environment of technique reaches energy-saving and emission-reduction, green production requirement, is a worth promotion technology.
Description of drawings
Fig. 1: process flow sheet of the present invention.
Embodiment
a kind of recoverying and utilizing method of Copper Foil factory effluent, process flow sheet is as shown in Figure 1: Copper Foil is produced low concentration wastewater concentrated through twice of water station, in raising solution, copper ion concentration is to more than 1g/l, after concentrated, solution is as the extraction feed liquid, then (extraction for the first time allows a large amount of copper in organic phase extracting and enriching feed liquid through twice extraction to add extraction agent and kerosene, extraction for the second time is in order further to extract remaining copper in the extraction feed liquid), extraction for the first time and for the second time in extraction process, utilize copper high-dissolvability in extraction agent, cupric ion is extracted from the extraction feed liquid, cupric ion is transferred in the organic phase of extraction agent and kerosene formation, utilize organic phase and water different densities, baffle plate separating for several times technology is separated the organic phase of supported copper ion.After twice extraction, load organic phases is as lean solution, add the sulphuric acid soln of concentration 200g/L to stir reextraction, again the high density cupric ion of organic phase and load is separated, separate organic phase through back extraction after aqueous copper solution form enrichment electrolytic solution, with copper bar as anode and cathode, logical upper direct current, under the additional power source effect, allow cupric ion deposit on negative electrode, finally effectively extract the copper acquisition finished product copper of solution middle and high concentration through electrolytic reaction; Contain a small amount of copper after electrolytic reaction in solution, can get in initial extraction feed liquid with pump, copper in second extraction solution forms an open closed cycle; After extraction, solution copper content is very low, is called remaining liquid, can be discharged in displacement pool, utilizes remaining copper in the iron substitutional solution, as much as possible extracts, and reduces the wasting of resources, reaches environmental emission standard.Wherein, described extraction agent is alkylbenzene oxime mixture { the copper extractant LIX984N} that peaceful (Cognis) company of German section produces, extraction agent and kerosene form organic phase with mass ratio 1:4, and (extraction agent is as the solute of organic phase, kerosene is the solvent of organic phase), organic phase and the volume ratio that extracts feed liquid are 1:1 in extraction and reextraction process for the first time, and in the back extraction process, the volume ratio of lean solution and sulphuric acid soln is 2:1.
Utilize this new technology both to reach and extract lower concentration copper requirement in waste water, increase economic benefit, again protection of the environment at utmost.In whole process, extraction agent and kerosene can recycle, and loss is low, save cost.
The below is in removal process, and stages solution copper content is measured and contrasted with the titrimetry method in the laboratory, can observe after extraction that copper content obviously reduces in solution.
In table, the solution after extraction feed liquid-----Copper Foil factory effluent concentrates for twice through water station; The load organic phases of lean solution-----extraction feed liquid after through twice extraction namely contains the solution of extraction agent; The back extraction of enrichment electrolytic solution-----lean solution process separates the aqueous copper solution after organic phase; Remaining liquid-----extraction feed liquid through twice extraction after residue contain the aqueous solution of trace copper.
From above Data Comparison, through after extraction in solution the content of copper obviously reduce, originally in solution, the copper enrichment is got up, efficient during the raising electrolysis can effectively be extracted copper in solution.
Claims (3)
1. the recoverying and utilizing method of a Copper Foil factory effluent, it is characterized in that: the Copper Foil factory effluent is concentrated into copper ion concentration more than 1g/l, after concentrated, solution is as the extraction feed liquid, add extraction agent and kerosene to extract, after extraction, load organic phases is as lean solution, add the sulphuric acid soln of concentration 180-220g/L to strip, obtain enrichment electrolytic solution, as anode and cathode, obtain finished product copper through electrolytic reaction with the copper bar energising; Wherein, described extraction agent is alkylbenzene oxime mixture, and extraction agent and kerosene form organic phase with mass ratio 1:4-6, and the volume ratio of organic phase and extraction feed liquid is 1-2:1, and the volume ratio of lean solution and sulphuric acid soln is 1-2:1.
2. the recoverying and utilizing method of Copper Foil factory effluent as claimed in claim 1 is characterized in that: the solution reuse after electrolytic reaction repeats to recycle to initial extraction feed liquid.
3. the recoverying and utilizing method of Copper Foil factory effluent as claimed in claim 1 or 2 is characterized in that: the remaining liquid after extraction, be discharged in displacement pool, and utilize the remaining copper in the iron substitutional solution.
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| CN201310048836.4A CN103088364B (en) | 2013-02-07 | 2013-02-07 | A kind of recoverying and utilizing method of copper foil production wastewater |
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| CN201310048836.4A CN103088364B (en) | 2013-02-07 | 2013-02-07 | A kind of recoverying and utilizing method of copper foil production wastewater |
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| CN103088364A true CN103088364A (en) | 2013-05-08 |
| CN103088364B CN103088364B (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293118A (en) * | 2018-11-23 | 2019-02-01 | 深圳市纯水号水处理科技有限公司 | Copper foil production wastewater recycles the corrosion-resistant evaporation technique of zero discharge of high-purity copper- |
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| US6177055B1 (en) * | 1998-09-14 | 2001-01-23 | Henkel Corporation | Process for extracting and recovering copper |
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| US6177055B1 (en) * | 1998-09-14 | 2001-01-23 | Henkel Corporation | Process for extracting and recovering copper |
| US6702872B1 (en) * | 1999-07-08 | 2004-03-09 | Cognis Corporation | Processes for the recovery of copper from aqueous solutions containing nitrate ions |
| CN1904142A (en) * | 2006-07-08 | 2007-01-31 | 王万春 | Copper extraction method of etching waste liquid or low copper containing waste liquid |
| CN101497942A (en) * | 2009-03-11 | 2009-08-05 | 南京农业大学 | Biological leaching-solvent extraction-electrodeposition recovering method for heavy metal copper in sludge |
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| JP2011144437A (en) * | 2010-01-18 | 2011-07-28 | Sumitomo Metal Mining Co Ltd | Method for separating and recovering copper from copper-containing iron sulfide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109293118A (en) * | 2018-11-23 | 2019-02-01 | 深圳市纯水号水处理科技有限公司 | Copper foil production wastewater recycles the corrosion-resistant evaporation technique of zero discharge of high-purity copper- |
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| CN103088364B (en) | 2016-01-06 |
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