CN107973437A - A kind of Purification by filtration technique of copper-bearing industrial wastewater - Google Patents
A kind of Purification by filtration technique of copper-bearing industrial wastewater Download PDFInfo
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- CN107973437A CN107973437A CN201711006911.5A CN201711006911A CN107973437A CN 107973437 A CN107973437 A CN 107973437A CN 201711006911 A CN201711006911 A CN 201711006911A CN 107973437 A CN107973437 A CN 107973437A
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- Prior art keywords
- industrial wastewater
- copper
- purification
- filtration technique
- liquid
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of Purification by filtration technique of copper-bearing industrial wastewater, including Step 1: industrial wastewater is poured into sedimentation basin, natural sedimentation；Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts PH, Step 4: adding metal-precipitator into liquid again；Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；Step 6: filter residue is placed in drying baker, 30 40 DEG C are warming up to；Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；Step 8: the pH value that clarified solution will be adjusted；Metal-precipitator is placed in industrial wastewater by the present invention, copper in industrial wastewater is effectively precipitated, is then filtered, changes the content of Cu in waste water, the poisonous and harmful substance in the industrial wastewater after being handled by above-mentioned purifying process is substantially reduced, and meets national wastewater discharge standard.
Description
Technical field
The invention belongs to water-treatment technology field, the Purification by filtration technique of more particularly to a kind of copper-bearing industrial wastewater.
Background technology
Industrial wastewater includes production waste water, production waste and cooling water, refer to the waste water that is produced in industrial processes and
Waste liquid, wherein containing the pollution produced in industrial production materials, intermediate product, byproduct and the production process outflowed with water
Thing.
Copper-containing wastewater is a kind of waste water produced by the industry such as metallurgy, electronics, in the industry of production copper product, in waste water
Then have copper and other heavy metals.Copper content substantially exceeds the sewage drainage standard of national regulation in copper-containing wastewater, if directly
Discharge, would seriously pollute the environment.Copper-containing wastewater is handled therefore, it is necessary to take the necessary measures.
The content of the invention
The present invention provides a kind of Purification by filtration technique of copper-bearing industrial wastewater, is contained with solving Cu in waste water in the prior art
Amount exceedes the sewage drainage standard of national regulation, so that the problem of cannot directly discharging.
To achieve these goals, the present invention uses following technical scheme：
A kind of Purification by filtration technique of copper-bearing industrial wastewater, comprises the following steps：
Step 1: industrial wastewater is poured into sedimentation basin, air is passed through so that industrial wastewater is completely mixed, then certainly
So precipitation, stands 8-10h；
Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；
Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts its PH to 6-8, while addition hydrochloric acid, while being stirred
Mix；
Step 4: adding metal-precipitator into liquid again, it is stirred while adding metal-precipitator, then stands 3-
5h；
Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；
Step 6: the filter residue that step 5 is obtained is placed in drying baker, 30-40 DEG C is warming up to, keeps the temperature 1-2h；
Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；
Step 8: the pH value of clarified solution is adjusted into 6-8.
Further, sodium chloride is added into industrial wastewater while air is passed through in the step 1.
Further, the mass ratio of the addition of the sodium chloride and industrial wastewater is 0.2-0.5：10.
Further, the air themperature being passed through in the step 1 is 30-35 DEG C.
Further, industrial wastewater is stirred while being passed through air in the step 1.
Further, the mesh screen using 80-100 mesh is filtered in the step 2.
Further, the mesh screen using 200-400 mesh is filtered in the step 5.
Further, the metal-precipitator in the step 3 includes activated carbon and calcium oxide.
Further, the mass ratio of the addition of the activated carbon and industrial wastewater is 0.8-1.5：10.
Further, the mass ratio of the addition of the calcium oxide and industrial wastewater is 0.8-1.0：10.
Compared with prior art, the invention has the advantages that：
Heavy metal precipitator is placed in industrial wastewater by the present invention, the copper in industrial wastewater is effectively precipitated, Ran Houjin
Row multiple times of filtration, so as to change the content of Cu in waste water, makes having in the industrial wastewater after being handled by above-mentioned purifying process
Malicious harmful substance substantially reduces, and meets national wastewater discharge standard, so as to protect environment.
Embodiment
The present invention is further described with reference to embodiment.
Embodiment 1
A kind of Purification by filtration technique of copper-bearing industrial wastewater, comprises the following steps：
Step 1: industrial wastewater is poured into sedimentation basin, air is passed through so that industrial wastewater is completely mixed, then certainly
So precipitation, stands 8h；
Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；
Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts its PH to 6, while addition hydrochloric acid, while being stirred；
Step 4: adding metal-precipitator into liquid again, it is stirred while adding metal-precipitator, then stands 3h；
Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；
Step 6: the filter residue that step 5 is obtained is placed in drying baker, 30 DEG C are warming up to, keeps the temperature 1h；
Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；
Step 8: the pH value of clarified solution is adjusted 6.
In the step 1 while air is passed through, sodium chloride is added into industrial wastewater.
The addition of the sodium chloride and the mass ratio of industrial wastewater are 0.2：10.
The air themperature being passed through in the step 1 is 30 DEG C, to industrial wastewater while being passed through air in the step 1
It is stirred.
Filtering uses the mesh screen of 80 mesh in the step 2, and the mesh screen using 200 mesh is filtered in the step 5.
Metal-precipitator in the step 3 includes activated carbon and calcium oxide, the addition and Industry Waste of the activated carbon
The mass ratio of water is 0.8：10, the addition of the calcium oxide and the mass ratio of industrial wastewater are 0.8：10.
Embodiment 2
A kind of Purification by filtration technique of copper-bearing industrial wastewater, comprises the following steps：
Step 1: industrial wastewater is poured into sedimentation basin, air is passed through so that industrial wastewater is completely mixed, then certainly
So precipitation, stands 9h；
Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；
Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts its PH to 7, while addition hydrochloric acid, while being stirred；
Step 4: adding metal-precipitator into liquid again, it is stirred while adding metal-precipitator, then stands 3-
5h；
Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；
Step 6: the filter residue that step 5 is obtained is placed in drying baker, 35 DEG C are warming up to, keeps the temperature 1h；
Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；
Step 8: the pH value of clarified solution is adjusted 7.
In the step 1 while air is passed through, sodium chloride is added into industrial wastewater.
The addition of the sodium chloride and the mass ratio of industrial wastewater are 0.4：10.
The air themperature being passed through in the step 1 is 33 DEG C, to industrial wastewater while being passed through air in the step 1
It is stirred.
Filtering uses the mesh screen of 90 mesh in the step 2, and the mesh screen using 300 mesh is filtered in the step 5.
Metal-precipitator in the step 3 includes activated carbon and calcium oxide, the addition and Industry Waste of the activated carbon
The mass ratio of water is 1.0：10, the addition of the calcium oxide and the mass ratio of industrial wastewater are 0.9：10.
Embodiment 3
A kind of Purification by filtration technique of copper-bearing industrial wastewater, comprises the following steps：
Step 1: industrial wastewater is poured into sedimentation basin, air is passed through so that industrial wastewater is completely mixed, then certainly
So precipitation, stands 10h；
Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；
Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts its PH to 8, while addition hydrochloric acid, while being stirred；
Step 4: adding metal-precipitator into liquid again, it is stirred while adding metal-precipitator, then stands 5h；
Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；
Step 6: the filter residue that step 5 is obtained is placed in drying baker, 40 DEG C are warming up to, keeps the temperature 1-2h；
Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；
Step 8: the pH value of clarified solution is adjusted 8.
In the step 1 while air is passed through, sodium chloride is added into industrial wastewater.
The addition of the sodium chloride and the mass ratio of industrial wastewater are 0.5：10.
The air themperature being passed through in the step 1 is 35 DEG C, to industrial wastewater while being passed through air in the step 1
It is stirred.
Filtering uses the mesh screen of 100 mesh in the step 2, and the mesh screen using 400 mesh is filtered in the step 5.
Metal-precipitator in the step 3 includes activated carbon and calcium oxide, the addition and Industry Waste of the activated carbon
The mass ratio of water is 1.5：10, the addition of the calcium oxide and the mass ratio of industrial wastewater are 1.0：10.
Heavy metal precipitator is placed in industrial wastewater by the present invention, the copper in industrial wastewater is effectively precipitated, so
After carry out multiple times of filtration, so as to change the content of Cu in waste water, make in the industrial wastewater after being handled by above-mentioned purifying process
Poisonous and harmful substance substantially reduce, and meet national wastewater discharge standard, so as to protect environment.
To having carried out the detection of copper, testing result using the copper-containing wastewater before and after Purification by filtration technique provided by the invention
For the copper removal rate in embodiment 1-3 before and after Purification by filtration in copper-containing wastewater has reached more than 99%, and national row is met after processing
Put standard.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. the Purification by filtration technique of a kind of copper-bearing industrial wastewater, it is characterised in that comprise the following steps：
Step 1: industrial wastewater is poured into sedimentation basin, air is passed through so that industrial wastewater is completely mixed, then certainly
So precipitation, stands 8-10h；
Step 2: the supernatant liquid filtering that step 1 natural sedimentation is separated purifies, the liquid of no solid impurity is obtained；
Step 3: hydrochloric acid is added in the liquid of no solid impurity adjusts its PH to 6-8, while addition hydrochloric acid, while being stirred
Mix；
Step 4: adding metal-precipitator into liquid again, it is stirred while adding metal-precipitator, then stands 3-
5h；
Step 5: the liquid that step 4 is obtained carries out Purification by filtration, filter residue and clarified solution are obtained；
Step 6: the filter residue that step 5 is obtained is placed in drying baker, 30-40 DEG C is warming up to, keeps the temperature 1-2h；
Step 7: by the filter residue obtained in step 6 as natural cooling in ventilated environment；
Step 8: the pH value of clarified solution is adjusted into 6-8.
2. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that in the step 1
While being passed through air, sodium chloride is added into industrial wastewater.
3. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 2, it is characterised in that the sodium chloride adds
The mass ratio for entering amount and industrial wastewater is 0.2-0.5：10.
4. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that lead in the step 1
The air themperature entered is 30-35 DEG C.
5. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that lead in the step 1
Industrial wastewater is stirred while entering air.
6. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that mistake in the step 2
Filter uses the mesh screen of 80-100 mesh.
7. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that mistake in the step 5
Filter uses the mesh screen of 200-400 mesh.
8. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 1, it is characterised in that in the step 3
Metal-precipitator includes activated carbon and calcium oxide.
9. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 8, it is characterised in that the activated carbon adds
The mass ratio for entering amount and industrial wastewater is 0.8-1.5：10.
10. the Purification by filtration technique of copper-bearing industrial wastewater according to claim 8, it is characterised in that the calcium oxide
The mass ratio of addition and industrial wastewater is 0.8-1.0：10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711006911.5A CN107973437A (en) | 2017-10-25 | 2017-10-25 | A kind of Purification by filtration technique of copper-bearing industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711006911.5A CN107973437A (en) | 2017-10-25 | 2017-10-25 | A kind of Purification by filtration technique of copper-bearing industrial wastewater |
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| Publication Number | Publication Date |
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| CN107973437A true CN107973437A (en) | 2018-05-01 |
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| CN201711006911.5A Withdrawn CN107973437A (en) | 2017-10-25 | 2017-10-25 | A kind of Purification by filtration technique of copper-bearing industrial wastewater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803737A (en) * | 2012-11-06 | 2014-05-21 | 重庆龙健金属制造有限公司 | Treatment method of copper-containing etching liquid |
| CN105000752A (en) * | 2015-07-02 | 2015-10-28 | 佛山市禹志环保科技有限公司 | Treatment method of heavy metal wastewater |
| CN105036411A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Treating method for industrial waste water |
| CN106007093A (en) * | 2016-07-15 | 2016-10-12 | 武汉尚远环保股份有限公司 | Zero discharge method for heavy metal waste water |
-
2017
- 2017-10-25 CN CN201711006911.5A patent/CN107973437A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803737A (en) * | 2012-11-06 | 2014-05-21 | 重庆龙健金属制造有限公司 | Treatment method of copper-containing etching liquid |
| CN105000752A (en) * | 2015-07-02 | 2015-10-28 | 佛山市禹志环保科技有限公司 | Treatment method of heavy metal wastewater |
| CN105036411A (en) * | 2015-07-21 | 2015-11-11 | 安徽江威精密制造有限公司 | Treating method for industrial waste water |
| CN106007093A (en) * | 2016-07-15 | 2016-10-12 | 武汉尚远环保股份有限公司 | Zero discharge method for heavy metal waste water |
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Application publication date: 20180501 |