CN106746040A - A kind of industrial wastewater process for purifying water - Google Patents
A kind of industrial wastewater process for purifying water Download PDFInfo
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- CN106746040A CN106746040A CN201510800146.9A CN201510800146A CN106746040A CN 106746040 A CN106746040 A CN 106746040A CN 201510800146 A CN201510800146 A CN 201510800146A CN 106746040 A CN106746040 A CN 106746040A
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- chromium
- ion
- industrial wastewater
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- purifying water
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Abstract
The invention discloses a kind of industrial wastewater process for purifying water, comprise the following steps：Coagulation, chromium plating wastewater acid adding and sodium pyrosulfite in broken chromium retort are reduced to chromium, neutralization reaction is carried out then into alkali is added in neutralization reaction tank with machining rinse water, nickel plating, copper waste water, trivalent chromium, copper ion and nickel ion generate metal hydroxides fine particle in the basic conditions, are subsequently adding flocculant；Two stage treatment, electrolysis treatment is carried out to waste water, in electrolytic treater, produces bushel iron to consider to be worth doing as anode material with industrial production, using carbon plate or charcoal particle as negative electrode；There is chemical reaction formation precipitation in the hydroxide ion produced on negative electrode, be deposited in the mud drainage slot of bottom of pond with the metal ion in solution；Tertiary treatment, with integrated filtering device, the flocculent deposit in solution and precipitation particle is thoroughly filtered out.Industrial wastewater process for purifying water of the invention, good waste water treatment effect, efficiency high.
Description
Technical field
The present invention relates to a kind of process for purifying water, and in particular to a kind of industrial wastewater process for purifying water, belong to environmentally friendly technical field of water purification.
Background technology
Now, people are faced with serious shortage of resources problem, and environmental pollution is increasingly severe, and water resource cannot be utilized reasonably, and water pollution problems is gradually highlighted.Shortage of water resources has become the weight too problem of serious restriction development of all countries economy, and water resource pollution is a very stubborn problem, with the improvement of people ' s living standards, people to the quality requirements more and more higher of the domestic waters such as drinking water, agricultural production water etc. is also required for purified treatment.In the last few years, China's economy achieves quick and stable growth, but some costs are also paid while economic growth, arbitrarily be discharged into river raw sewerage by some factories, causes body eutrophication, cause the death of a large amount of aquatiles, and water body environment is run down, and and then influence the domestic water of general public, but the method purified water of shadow is seen currently without vertical rod, therefore grow with each passing hour, explore effective water purification means very necessary.
The content of the invention
（One）The technical problem to be solved
To solve the above problems, the present invention proposes a kind of industrial wastewater process for purifying water, is constantly purified industrial wastewater using tertiary treatment, industrial wastewater is reached discharge standard, and excessive burden is not caused to environment.
（Two）Technical scheme
Industrial wastewater process for purifying water of the invention, methods described includes coagulation, two stage treatment and tertiary treatment, and its is specific as follows：
Coagulation, chromium plating wastewater acid adding and sodium pyrosulfite in broken chromium retort are reduced to chromium, neutralization reaction is carried out then into alkali is added in neutralization reaction tank with machining rinse water, nickel plating, copper waste water, trivalent chromium, copper ion and nickel ion generate metal hydroxides fine particle in the basic conditions, are subsequently adding flocculant；
Two stage treatment, electrolysis treatment is carried out to waste water, in electrolytic treater, produces bushel iron to consider to be worth doing as anode material with industrial production, using carbon plate or charcoal particle as negative electrode；There is chemical reaction formation precipitation in the hydroxide ion produced on negative electrode, be deposited in the mud drainage slot of bottom of pond with the metal ion in solution；
Tertiary treatment, with integrated filtering device, the flocculent deposit in solution and precipitation particle is thoroughly filtered out.
Further, in acid condition, there is redox reaction in Cr VI with reducing agent for described reduction, and Cr VI is reduced into trivalent chromium.
Further, described molecule adds flocculant that bulk is formed in the presence of flocculant.
Further, iron filings oxidation becomes divalence ferrous ion when described electrolysis is processed, while producing hydrogen；Can be in trivalent ion by remaining hexavalent chromium reduction into the ferrous ion and hydrogen in solution.
Further, described integrated filtering device composition has quartz sand, activated carbon and silica gel.
（Three）Beneficial effect
Compared with prior art, industrial wastewater process for purifying water of the invention, using tertiary treatment, react the method such as reduction and electrolysis and synthetic filter using chemical reagent carries out purified treatment to industrial wastewater, by tertiary treatment, good waste water treatment effect can reach discharge standard, and it is relatively low using chemical reaction cost, efficiency is higher.
Specific embodiment
A kind of industrial wastewater process for purifying water, methods described includes coagulation, two stage treatment and tertiary treatment, and its is specific as follows：
Coagulation, chromium plating wastewater acid adding and sodium pyrosulfite in broken chromium retort are reduced to chromium, neutralization reaction is carried out then into alkali is added in neutralization reaction tank with machining rinse water, nickel plating, copper waste water, trivalent chromium, copper ion and nickel ion generate metal hydroxides fine particle in the basic conditions, are subsequently adding flocculant；
Two stage treatment, electrolysis treatment is carried out to waste water, in electrolytic treater, produces bushel iron to consider to be worth doing as anode material with industrial production, using carbon plate or charcoal particle as negative electrode；There is chemical reaction formation precipitation in the hydroxide ion produced on negative electrode, be deposited in the mud drainage slot of bottom of pond with the metal ion in solution；
Tertiary treatment, with integrated filtering device, the flocculent deposit in solution and precipitation particle is thoroughly filtered out.
In acid condition, there is redox reaction in Cr VI with reducing agent for described reduction, and Cr VI is reduced into trivalent chromium.Described molecule adds flocculant that bulk is formed in the presence of flocculant.Iron filings oxidation becomes divalence ferrous ion when described electrolysis is processed, while producing hydrogen；Can be in trivalent ion by remaining hexavalent chromium reduction into the ferrous ion and hydrogen in solution.Described integrated filtering device composition has quartz sand, activated carbon and silica gel.
Industrial wastewater process for purifying water of the invention, industrial wastewater process for purifying water of the invention, using tertiary treatment, react the method such as reduction and electrolysis and synthetic filter using chemical reagent carries out purified treatment to industrial wastewater, by tertiary treatment, good waste water treatment effect can reach discharge standard, and it is relatively low using chemical reaction cost, efficiency is higher.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the spirit and scope of the present invention are defined.On the premise of design concept of the present invention is not departed from; the all variations and modifications that this area ordinary person makes to technical scheme; protection scope of the present invention all should be dropped into, claimed technology contents of the invention have all been recorded in detail in the claims.
Claims (5)
1. a kind of industrial wastewater process for purifying water, it is characterised in that：Methods described includes coagulation, two stage treatment and tertiary treatment, and its is specific as follows：
Coagulation, chromium plating wastewater acid adding and sodium pyrosulfite in broken chromium retort are reduced to chromium, neutralization reaction is carried out then into alkali is added in neutralization reaction tank with machining rinse water, nickel plating, copper waste water, trivalent chromium, copper ion and nickel ion generate metal hydroxides fine particle in the basic conditions, are subsequently adding flocculant；
Two stage treatment, electrolysis treatment is carried out to waste water, in electrolytic treater, produces bushel iron to consider to be worth doing as anode material with industrial production, using carbon plate or charcoal particle as negative electrode；There is chemical reaction formation precipitation in the hydroxide ion produced on negative electrode, be deposited in the mud drainage slot of bottom of pond with the metal ion in solution；
Tertiary treatment, with integrated filtering device, the flocculent deposit in solution and precipitation particle is thoroughly filtered out.
2. industrial wastewater process for purifying water according to claim 1, it is characterised in that：In acid condition, there is redox reaction in Cr VI with reducing agent for described reduction, and Cr VI is reduced into trivalent chromium.
3. industrial wastewater process for purifying water according to claim 1, it is characterised in that：Described molecule adds flocculant that bulk is formed in the presence of flocculant.
4. industrial wastewater process for purifying water according to claim 1, it is characterised in that：Iron filings oxidation becomes divalence ferrous ion when described electrolysis is processed, while producing hydrogen；Can be in trivalent ion by remaining hexavalent chromium reduction into the ferrous ion and hydrogen in solution.
5. industrial wastewater process for purifying water according to claim 1, it is characterised in that：Described integrated filtering device composition has quartz sand, activated carbon and silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510800146.9A CN106746040A (en) | 2015-11-19 | 2015-11-19 | A kind of industrial wastewater process for purifying water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510800146.9A CN106746040A (en) | 2015-11-19 | 2015-11-19 | A kind of industrial wastewater process for purifying water |
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| CN106746040A true CN106746040A (en) | 2017-05-31 |
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| CN201510800146.9A Pending CN106746040A (en) | 2015-11-19 | 2015-11-19 | A kind of industrial wastewater process for purifying water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117107A (en) * | 2019-05-27 | 2019-08-13 | 乐清市荣禹污水处理有限公司 | Electroplating waste water treatment system |
| CN110294556A (en) * | 2019-07-02 | 2019-10-01 | 江苏博赛环境科技有限公司 | A kind of processing unit and its processing method of industrial wastewater |
| CN114702071A (en) * | 2022-04-15 | 2022-07-05 | 合肥工业大学 | Method for preparing chromium sesquioxide by utilizing high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
-
2015
- 2015-11-19 CN CN201510800146.9A patent/CN106746040A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110117107A (en) * | 2019-05-27 | 2019-08-13 | 乐清市荣禹污水处理有限公司 | Electroplating waste water treatment system |
| CN110117107B (en) * | 2019-05-27 | 2021-09-24 | 乐清市荣禹污水处理有限公司 | Electroplating wastewater treatment system |
| CN110294556A (en) * | 2019-07-02 | 2019-10-01 | 江苏博赛环境科技有限公司 | A kind of processing unit and its processing method of industrial wastewater |
| CN114702071A (en) * | 2022-04-15 | 2022-07-05 | 合肥工业大学 | Method for preparing chromium sesquioxide by utilizing high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
| CN114702071B (en) * | 2022-04-15 | 2023-11-03 | 合肥工业大学 | Method for preparing chromium oxide by using high-chromium sludge generated by chromium electroplating rinsing wastewater treatment |
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Application publication date: 20170531 |