CN103011360A - Treatment method for industrial wastewater generated by copper wet-process smelting - Google Patents
Treatment method for industrial wastewater generated by copper wet-process smelting Download PDFInfo
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- CN103011360A CN103011360A CN2012105955039A CN201210595503A CN103011360A CN 103011360 A CN103011360 A CN 103011360A CN 2012105955039 A CN2012105955039 A CN 2012105955039A CN 201210595503 A CN201210595503 A CN 201210595503A CN 103011360 A CN103011360 A CN 103011360A
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Abstract
The invention discloses a treatment method for industrial wastewater generated by copper wet-process smelting. The method comprises the following steps of: adjusting the pH value of the copper-containing industrial wastewater added with sodium hydroxide solution to be 7.5-8.5, and then performing flocculating-settling treatment; then adding sodium sulphide, and performing precipitation pre-treatment on copper ions; charging ammonia after the pre-treatment, adjusting the pH value to 8.5-9.5, adding propenol and EDTA (ethylene diamine tetraacetic acid) organic substance simultaneously, and stirring for completely reacting; and finally adding a polymeric ferric sulphate flocculant and performing flocculating treatment to obtain the effluent, namely, the copper-containing wastewater after the treatment. The treatment method disclosed by the invention is low in operating cost, low in slag amount, and simple and convenient to recover copper; and heavy metal ions, petroleum substances, suspended matters and COD (chemical oxygen demand) value achieve the three-level drainage standards of industrial wastewater.
Description
Technical field
The invention discloses a kind for the treatment of process of trade effluent of copper hydrometallurgy generation, belong to sewage treatment area.
Background technology
Coagulation technology occupies critical positions in water treatment, no matter be to water treatment or wastewater treatment, the processing of especially unmanageable trade effluent, no matter be second-stage treatment or advanced treatment, as long as contain the colloidalmaterial that can not separate with natural sedimentation or the material that easily forms stabilising system in the water, mostly adopt coagulation technology to process, or adopt the coupling of coagulation technology and other technologies.
At present, the coagulating sedimentation facility of domestic and international application, there are the following problems: (1) effect for guaranteeing to mix and react, need carry out mechanical stirring, the operation power consumption increases; (2) for guaranteeing outlet effect, enough sedimentation time need be arranged, cause huge structure; (3) adding of agent is unreasonable, so that the medicament utilization ratio is low, causes waste; (4) affected greatly by variation water quality; (5) function singleness, processing efficiency is low; (6) operational administrative intensity is large etc.
Summary of the invention
Summary of the invention technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists, a kind of method that adopts bodied ferric sulfate-NaOH coagulant sedimentation to process the copper industrial waste water generated in hydrometallurgical process is provided, makes heavy metal ion, COD value all reach three grades of emission standards of trade effluent.
The technical solution used in the present invention is:
(1) trade effluent with cupric adds sodium hydroxide solution, and adjust pH is 7.5～8.5, carries out flocculating settling and processes;
(2) then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment;
(3) to passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 8.5～9.5;
(4) add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely;
(5) add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.
Described bodied ferric sulfate water is mixed with the solution that mass concentration is 15-30%.
The treatment process of the trade effluent that described a kind of copper hydrometallurgy produces is characterized in that: in (4) step, add polymeric ferrous sulphate solution after, when the pH of solution value is on the low side, adds sodium hydroxide to the pH value of solution and remain on 8.5～9.5.
Method of the present invention is compared the advantage and the effect that have with existing method:
(1) technical process is simple, medicament stock is easy to get, with low cost, easy to operate;
(2) carry out at normal temperatures, noiselessness, used chemical agent is nontoxic, harmless, non-volatile, and treating processes does not produce new " three wastes ";
(3) obvious processing effect, residual antimony ion concentration is lower than 0.01mg/L in the water after primary treatment, is lower than the first discharge standard of national regulation, and clearance is up to 99.99%.
Specific examples
The concrete steps of the inventive method are followed successively by:
(1) trade effluent with cupric adds sodium hydroxide solution, and adjust pH is 7.5～8.5, carries out flocculating settling and processes;
(2) then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment;
(3) to passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 8.5～9.5;
(4) add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely;
(5) add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.
Described bodied ferric sulfate water is mixed with the solution that mass concentration is 15-30%.
The treatment process of the trade effluent that described a kind of copper hydrometallurgy produces is characterized in that: in (4) step, add polymeric ferrous sulphate solution after, when the pH of solution value is on the low side, adds sodium hydroxide to the pH value of solution and remain on 8.5～9.5.
Example 1
The trade effluent of cupric is added sodium hydroxide solution, and adjust pH is 7.5, carries out flocculating settling and processes; Then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment; To passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 8.5; Add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely; Add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.Water outlet copper concentration has dropped to 0.04mg/L, and clearance has reached 99.8%.
Example 2
The trade effluent of cupric is added sodium hydroxide solution, and adjust pH is 8.0, carries out flocculating settling and processes; Then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment; To passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 9.0; Add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely; Add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.Water outlet copper concentration has dropped to 0.03mg/L, and clearance has reached 99.99%.
Example 3
The trade effluent of cupric is added sodium hydroxide solution, and adjust pH is 8.5, carries out flocculating settling and processes; Then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment; To passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 9.5; Add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely; Add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.Water outlet copper concentration has dropped to 0.01mg/L, and clearance has reached 99.99%.
Claims (3)
1. the treatment process of the trade effluent that produces of a copper hydrometallurgy is characterized in that:
(1) trade effluent with cupric adds sodium hydroxide solution, and adjust pH is 7.5～8.5, carries out flocculating settling and processes;
(2) then in trade effluent, add sodium sulphite, cupric ion is precipitated pre-treatment;
(3) to passing into ammonia in the pretreated copper-containing wastewater, regulating its pH value with sodium hydroxide simultaneously is 8.5～9.5;
(4) add simultaneously vinylcarbinol and EDTA organic substance, stir, it is reacted completely;
(5) add polymeric ferric sulfate flocculant inside again and carry out flocculation treatment, water outlet is the copper-containing wastewater after the processing.
2. the treatment process of the trade effluent that produces of a kind of copper hydrometallurgy according to claim 1, it is characterized in that: described bodied ferric sulfate water is mixed with the solution that mass concentration is 15-30%.
3. the treatment process of the trade effluent that produces of a kind of copper hydrometallurgy according to claim 1, it is characterized in that: in (4) step, after adding polymeric ferrous sulphate solution, when the pH of solution value is on the low side, adds sodium hydroxide to the pH value of solution and remain on 8.5～9.5.
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| CN2012105955039A CN103011360A (en) | 2012-12-07 | 2012-12-07 | Treatment method for industrial wastewater generated by copper wet-process smelting |
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| CN2012105955039A CN103011360A (en) | 2012-12-07 | 2012-12-07 | Treatment method for industrial wastewater generated by copper wet-process smelting |
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Cited By (5)
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| CN103663640A (en) * | 2013-12-06 | 2014-03-26 | 哈尔滨工业大学深圳研究生院 | Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water |
| CN105692833A (en) * | 2016-03-08 | 2016-06-22 | 江苏国松环境科技开发有限公司 | Process for treating wastewater in copper industry by using polymeric ferric sulfate |
| CN106865724A (en) * | 2017-03-28 | 2017-06-20 | 湖南长立环保科技有限公司 | The processing method of tantalum and niobium hydrometallurgy raffinate and comprehensive wastewater |
| CN107176711A (en) * | 2017-04-20 | 2017-09-19 | 东北大学 | The technique of copper in a kind of high efficiente callback high concentration berberine waste water |
| CN107285501A (en) * | 2016-04-05 | 2017-10-24 | 常州市五洲环保科技有限公司 | A kind of copper-bearing industrial wastewater processing method |
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| CN103663640A (en) * | 2013-12-06 | 2014-03-26 | 哈尔滨工业大学深圳研究生院 | Wastewater processing technology and apparatus capable of synchronously removing phosphates and copper ions in water |
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| CN107285501A (en) * | 2016-04-05 | 2017-10-24 | 常州市五洲环保科技有限公司 | A kind of copper-bearing industrial wastewater processing method |
| CN106865724A (en) * | 2017-03-28 | 2017-06-20 | 湖南长立环保科技有限公司 | The processing method of tantalum and niobium hydrometallurgy raffinate and comprehensive wastewater |
| CN107176711A (en) * | 2017-04-20 | 2017-09-19 | 东北大学 | The technique of copper in a kind of high efficiente callback high concentration berberine waste water |
| CN107176711B (en) * | 2017-04-20 | 2020-10-16 | 东北大学 | Process for efficiently recovering copper in high-concentration berberine wastewater |
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Application publication date: 20130403 |