CN103739135B - A kind of wastewater from copper smelter treatment process - Google Patents
A kind of wastewater from copper smelter treatment process Download PDFInfo
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- CN103739135B CN103739135B CN201310678514.8A CN201310678514A CN103739135B CN 103739135 B CN103739135 B CN 103739135B CN 201310678514 A CN201310678514 A CN 201310678514A CN 103739135 B CN103739135 B CN 103739135B
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Abstract
A kind of wastewater from copper smelter treatment process, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 5 ~ 6%; Concentrated solution through vacuum-evaporation is sent into reactive tank, adds Ca (OH)
2or carbide slag, after aeration 4 ~ 8h, the pH value of concentrated solution is 3.5 ~ 4.5; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 7.5 ~ 8.5 by adding NaOH adjust ph, then aeration 3 ~ 5 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.The present invention has reclaimed water resources by membrane filtration technique and vacuum-evaporation, and is reclaimed by the metals such as the copper in waste water, zinc, lead, cadmium, has obvious economic benefit and social benefit.
Description
Technical field
The invention belongs to metallurgical technology field, be specifically related to a kind of wastewater from copper smelter treatment process.
Background technology
At present, copper-bearing gold concentrate, after acidizing fired process, acid leaching-extraction electro deposited copper, produces the sour water containing trace metal.General treatment process adds Ca (OH)
2, filter after aeration, filter cake stacked and buries; And because adding Ca (OH) in waste water
2after, the water hardness becomes large, and water is in recycling process, and pipeline scale blocking is serious, and the minute amount of noble metal simultaneously contained generates basic oxide and is deposited in slag, can not reclaim, cause the wasting of resources.Therefore, a kind of waste water treatment process that can reclaim metal in wastewater from copper smelter and water is provided to be very important.
Summary of the invention
For achieving the above object, the technical scheme that the present invention takes is, a kind of wastewater from copper smelter treatment process, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 5 ~ 6%; Concentrated solution through vacuum-evaporation is sent into reactive tank, adds Ca (OH)
2or carbide slag, the pH value of concentrated solution is 3.5 ~ 4.5 after aeration 4 ~ 8h; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 7.5 ~ 8.5 by adding NaOH adjust ph, then aeration 3 ~ 5 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.
The present invention has reclaimed water resources by membrane filtration technique and vacuum-evaporation, and the metals such as the copper in waste water, zinc, lead, cadmium are become oxyhydroxide reclaims, and reduces the wasting of resources, has obvious economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited thereto.
In the membrane filtration processes of following examples, the film of employing is the HRC type hollow-fibre membrane that No.2 Research Institute of National Bureau of Oceanography produces.
Embodiment 1
A kind of wastewater from copper smelter treatment process, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 5%; Concentrated solution through vacuum-evaporation is sent into reactive tank, adds Ca (OH)
2, the pH value of concentrated solution is 3.5 after aeration 4h; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 7.5 by adding NaOH adjust ph, then aeration 3 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.
Embodiment 2
A kind of wastewater from copper smelter treatment process, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 6%; Concentrated solution through vacuum-evaporation is sent into reactive tank, and after adding carbide slag, aeration 8h, the pH value of concentrated solution is 4; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 8.5 by adding NaOH adjust ph, then aeration 5 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.
Embodiment 3
A kind of wastewater from copper smelter treatment process, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 5.5%; Concentrated solution through vacuum-evaporation is sent into reactive tank, adds Ca (OH)
2, the pH value of concentrated solution is 4.5 after aeration 6h; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 8 by adding NaOH adjust ph, then aeration 4 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.
Claims (1)
1. a wastewater from copper smelter treatment process, is characterized in that, comprises the following steps: wastewater from copper smelter is obtained concentrated solution and water by membrane filtration; Concentrated solution carries out vacuum-evaporation, and in the concentrated solution after vacuum-evaporation, the massfraction of sulfuric acid is 5 ~ 6%; Concentrated solution through vacuum-evaporation is sent into reactive tank, adds Ca (OH)
2or carbide slag, after aeration 4 ~ 8h, the pH value of concentrated solution is 3.5 ~ 4.5; Concentrated solution after aeration is obtained filter cake and filtrate by diaphragm filter press press filtration, and filter cake carries out stacking, burying process; Filtrate is 7.5 ~ 8.5 by adding NaOH adjust ph, then aeration 3 ~ 5 hours, filters, obtains precipitate metal hydroxides and metabisulfite solution; Metabisulfite solution is carried out evaporative crystallization and obtains sodium sulfate crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310678514.8A CN103739135B (en) | 2013-12-14 | 2013-12-14 | A kind of wastewater from copper smelter treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310678514.8A CN103739135B (en) | 2013-12-14 | 2013-12-14 | A kind of wastewater from copper smelter treatment process |
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| Publication Number | Publication Date |
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| CN103739135A CN103739135A (en) | 2014-04-23 |
| CN103739135B true CN103739135B (en) | 2015-09-23 |
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| CN201310678514.8A Active CN103739135B (en) | 2013-12-14 | 2013-12-14 | A kind of wastewater from copper smelter treatment process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973468A (en) * | 2017-10-25 | 2018-05-01 | 镇江市丹徒区华发五金有限公司 | A kind of repeatedly evaporation separates out the treatment process of heavy metal in copper-containing wastewater |
| CN108328841A (en) * | 2018-04-12 | 2018-07-27 | 四川星明能源环保科技有限公司 | Waste-water recovering treater and V electrolyte production system |
| CN108298736A (en) * | 2018-04-12 | 2018-07-20 | 四川星明能源环保科技有限公司 | Waste water zero discharge device and V electrolyte production system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276099A (en) * | 2011-07-29 | 2011-12-14 | 广西银亿科技矿冶有限公司 | Comprehensive treatment method of waste water from laterite-nickel ore wet smelting |
| CN102786133A (en) * | 2011-05-20 | 2012-11-21 | 中国科学院广州地球化学研究所 | Stepwise precipitation process for recovering iron/copper resource in acid mine waste water |
| JP2012250226A (en) * | 2011-06-01 | 2012-12-20 | Nippon Filter Kk | Water-treating solid-liquid separation method |
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2013
- 2013-12-14 CN CN201310678514.8A patent/CN103739135B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786133A (en) * | 2011-05-20 | 2012-11-21 | 中国科学院广州地球化学研究所 | Stepwise precipitation process for recovering iron/copper resource in acid mine waste water |
| JP2012250226A (en) * | 2011-06-01 | 2012-12-20 | Nippon Filter Kk | Water-treating solid-liquid separation method |
| CN102276099A (en) * | 2011-07-29 | 2011-12-14 | 广西银亿科技矿冶有限公司 | Comprehensive treatment method of waste water from laterite-nickel ore wet smelting |
Non-Patent Citations (2)
| Title |
|---|
| 矿铜冶炼工厂重金属废水零排放技术路线;徐焰;《有色金属工程》;20120630;第2卷(第6期);第27页2.2节-第28页2.4节 * |
| 铜冶炼系统酸性废水综合治理及利用;朱红等;《甘肃冶金》;20120430;第34卷(第2期);第101-104页 * |
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