CN103496803A - Treatment method of low-concentration copper-containing wastewater - Google Patents
Treatment method of low-concentration copper-containing wastewater Download PDFInfo
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- CN103496803A CN103496803A CN201310431049.8A CN201310431049A CN103496803A CN 103496803 A CN103496803 A CN 103496803A CN 201310431049 A CN201310431049 A CN 201310431049A CN 103496803 A CN103496803 A CN 103496803A
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Abstract
The invention relates to a treatment method of low-concentration copper-containing wastewater. The treatment method comprises the steps: firstly, adding sodium hydroxide to adjust the pH value of the wastewater to 10.5-11.5; then, adding 50-300ppm of attapulgite and stirring for 2-5min; finally, adding 0.5-5ppm of anions, stirring for 10-20min, settling for 10-20min, filtering and measuring the content of copper in the filtered water. The treatment method has the beneficial effects that sodium hydroxide is added firstly to adjust the pH value of the wastewater to 10.5-11.5, then, the attapulgite is added and stirred, finally, the anions are added and sufficiently stirred, and the content of copper in the filtered water is measured, so that the method is low in cost and consumption, capable of treating various coppers in a water body, simple in operation, free of secondary pollution and odorant gases and high in copper removal rate up to 99.4%.
Description
Technical field
The present invention relates to wastewater processing technology, relate in particular to a kind for the treatment of process of lower concentration copper-containing wastewater.
Background technology
Along with the quantity discharged of trade effluent increases day by day, after trade effluent not up to standard enters water body, can polluted surface water and underground water.Copper-containing wastewater is the waste water that a class is produced by industry such as metallurgy, electronics, mainly comprises the etching waste liquor of copper powder washing waste water, electroplating wastewater and printed circuit board (PCB) production process etc.Copper-containing wastewater is very harmful to animal, plant and the mankind's, uses the copper-containing wastewater irrigated farmland, and cupric ion will be fixed in plant root, affect nutrition absorption, has a strong impact on the growth of farm crop; After copper-containing wastewater enters water body, copper is enrichment in vivo, and is converted into the heavy metal organic compound that toxicity is larger, and easily by food chain, enters human body, thereby to human body generation toxic action.Therefore, the pollution of managing to control and administer copper-containing wastewater seems very important and urgent.In the medicament of existing Treatment of Copper waste water, be generally to use the most conventional sodium sulphite to join in the waste water of cupric, make the Cu in water
2+precipitation, make to remove in this way the copper in waste water, and consumption is large, cause that water body darkens, exists secondary pollution, also can produce gas odorous, and the copper waste water of complex state be there is no to treatment effect, and cost performance is low." attapulgite clay " is a kind of rare nonmetal mineral resource, it be a kind of layer of chain-like structure containing Shuifu County's zeopan clay mineral, research shows, can be applicable to a plurality of fields such as building materials, chemical industry, machinery, military project, nuclear industry, weaving, environmental protection, papermaking, medicine, food, in the present invention, existing treatment process is compared in its application essential difference, thereby, need to effectively innovate prior art.
Summary of the invention
For above defect, the invention provides a kind of with low cost, consumption is few, can process the copper of various forms in water body, simple to operate, non-secondary pollution, without the treatment process of scent of γ-ray emission, lower concentration copper-containing wastewater that the copper removal rate is high, to solve many deficiencies of existing wastewater processing technology.
For achieving the above object, the present invention is by the following technical solutions:
A kind for the treatment of process of lower concentration copper-containing wastewater, the steps include:
(1) first add sodium hydroxide to regulate wastewater pH to 10.5-11.5;
(2) add again the recessed soil of 50-300ppm to stir 2-5 minute;
(3) last, add the negatively charged ion of 0.5-5ppm to stir 10-20 minute, precipitation 10-20 minute, filter, copper content in water after the survey filtration.
The value of described recessed soil selects to can be 50ppm and added negatively charged ion is 2.5ppm.
The value of described recessed soil selects to can be 100ppm and added negatively charged ion is 3ppm.
The beneficial effect of the treatment process of lower concentration copper-containing wastewater of the present invention is: by first adding sodium hydroxide, regulate wastewater pH to 10.5-11.5, adding recessed soil stirs again, finally add negatively charged ion and fully stir, survey copper content in the rear water of filtration, the method is with low cost, consumption is few, can process the copper of various forms in water body, simple to operate, non-secondary pollution, without scent of γ-ray emission, copper removal rate up to 99.4%.
Embodiment
embodiment 1
The treatment process of the described lower concentration copper-containing wastewater of the embodiment of the present invention mainly is comprised of following steps:
(1) first add sodium hydroxide to regulate wastewater pH to 10.5-11.5;
(2) add again the recessed soil of 50ppm to stir 2-5 minute;
(3) last, add the negatively charged ion of 2.5ppm to stir 10-20 minute, precipitation 10-20 minute, filter, copper content in water after the survey filtration.
embodiment 2
Mainly by following steps, formed:
(1) first add sodium hydroxide to regulate wastewater pH to 10.5-11.5;
(2) add again the recessed soil of 100ppm to stir 2-5 minute;
(3) last, add the negatively charged ion of 3ppm to stir 10-20 minute, precipitation 10-20 minute, filter, copper content in water after the survey filtration.
Above embodiment is more preferably embodiment several of the present invention, the common variation that those skilled in the art carry out in the technical program scope and replace and should be included in protection scope of the present invention.
Claims (3)
1. the treatment process of a lower concentration copper-containing wastewater, is characterized in that, the steps include:
(1) first add sodium hydroxide to regulate wastewater pH to 10.5-11.5;
(2) add again the recessed soil of 50-300ppm to stir 2-5 minute;
(3) last, add the negatively charged ion of 0.5-5ppm to stir 10-20 minute, precipitation 10-20 minute, filter, copper content in water after the survey filtration.
2. the treatment process of lower concentration copper-containing wastewater according to claim 1 is characterized in that: the value of described recessed soil selects to can be 50ppm and added negatively charged ion is 2.5ppm.
3. the treatment process of lower concentration copper-containing wastewater according to claim 1 is characterized in that: the value of described recessed soil selects to can be 100ppm and added negatively charged ion is 3ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431049.8A CN103496803A (en) | 2013-09-22 | 2013-09-22 | Treatment method of low-concentration copper-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431049.8A CN103496803A (en) | 2013-09-22 | 2013-09-22 | Treatment method of low-concentration copper-containing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103496803A true CN103496803A (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310431049.8A Pending CN103496803A (en) | 2013-09-22 | 2013-09-22 | Treatment method of low-concentration copper-containing wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003550A (en) * | 2014-05-26 | 2014-08-27 | 苏州市众和固体废物回收处理有限公司 | Copper-containing wastewater treatment system |
-
2013
- 2013-09-22 CN CN201310431049.8A patent/CN103496803A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003550A (en) * | 2014-05-26 | 2014-08-27 | 苏州市众和固体废物回收处理有限公司 | Copper-containing wastewater treatment system |
| CN104003550B (en) * | 2014-05-26 | 2015-10-07 | 苏州市众和固体废物回收处理有限公司 | Copper-containing wastewater treatment system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140108 |
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| WD01 | Invention patent application deemed withdrawn after publication |