CN105000709A - Sewage treatment method - Google Patents
Sewage treatment method Download PDFInfo
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- CN105000709A CN105000709A CN201510405670.6A CN201510405670A CN105000709A CN 105000709 A CN105000709 A CN 105000709A CN 201510405670 A CN201510405670 A CN 201510405670A CN 105000709 A CN105000709 A CN 105000709A
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- treatment method
- sewage
- reaction tank
- water treatment
- sewage water
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Abstract
The present invention discloses a sewage treatment method. The method comprises: step 1, collecting sewage into a reaction tank; step 2, adding sodium sulfite and sodium bisulfite to the reaction tank, to reduce hexavalent chromium to trivalent chromium; step 3, performing stirring in the reaction tank by using a manipulator; and step 4, pumping the sewage by using a pump to a filtration tank that exhibits basicity, and filtering out precipitates. The sewage treatment method overcomes the problem in the prior art that treatment of hexavalent chromium is not perfect, thereby realizing better treatment of sewage that contains hexavalent chromium.
Description
Technical field
The present invention relates to mechanical manufacturing field, particularly, relate to a kind of sewage water treatment method.
Background technology
In existing mechanical manufacturing field, in manufacture for bearing circle, automobile web member, waste water can be produced in intermediate steps, and hexavalent chromium in waste water, may be contained, chromium due to sexavalence is first kind pollutent, if the bad chromium being easy to have extra sexavalence of sewage disposal flows out, also can threaten to the life security of people while causing environmental pollution.
Summary of the invention
The object of this invention is to provide a kind of sewage water treatment method, this sewage water treatment method overcomes the problem perfect not of the process of the chromium of sexavalence of the prior art, achieves the process better of the sewage containing hexavalent chromium.
To achieve these goals, the invention provides a kind of sewage water treatment method, the method comprises:
Step 1, by sewage collecting in reaction tank;
Step 2, adds S-WAT in reaction tank and hexavalent chrome reduction is trivalent chromium by sodium bisulfite;
Step 3, is stirred in reaction tank by mechanical arm;
Step 4, is extracted into sewage in filtering basin by taking out pump, and filters out throw out.
Preferably, also comprise between step 3 and step 4: by the pH value in reaction tank at 1-5.
Preferably, also comprise between step 3 and step 4: by the pH value in reaction tank at 2-3.
Preferably, also comprise between step 3 and step 4: by redox reaction control of Electric potentials at 250-400mV.
Preferably, also comprise between step 3 and step 4: by redox reaction control of Electric potentials at 300mV.
Preferably, in step 4, the pH value in described filtering basin is 9-11.
By above-mentioned embodiment, the sexavalent chrome produced in the manufacturing processed of bearing circle, automobile web member can be reduced, obtain trivalent chromium, and stirred in reaction tank by mechanical arm, make this reaction more abundant, realize chromic precipitation by alkaline filter pond, throw out filters and removes the most at last.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of sewage water treatment method, the method comprises:
Step 1, by sewage collecting in reaction tank;
Step 2, adds S-WAT in reaction tank and hexavalent chrome reduction is trivalent chromium by sodium bisulfite;
Step 3, is stirred in reaction tank by mechanical arm;
Step 4, is extracted into sewage in alkaline filtering basin by taking out pump, and filters out throw out.
By above-mentioned embodiment, the sexavalent chrome produced in the manufacturing processed of bearing circle, automobile web member can be reduced, obtain trivalent chromium, and stirred in reaction tank by mechanical arm, make this reaction more abundant, realize chromic precipitation by alkaline filter pond, throw out filters and removes the most at last.Trivalent chromium wherein in filtering basin generates chromium hydroxide, and the Cmin value precipitated completely is 10-5, and hydroxide radical concentration be 10-9, PH is 9.
Wherein, the reactive chemistry formula in the present invention is:
4H
2CrO
4+6NaHSO
3+3H
2SO
4→2Cr
2(SO
4)
3+3Na
2SO
4+10H
2O
In this kind of embodiment, also comprise between step 3 and step 4: the pH value in reaction tank is controlled at 1-5.Controlling is the regulation that acid washing conditions just meets above-mentioned reaction formula.
In this kind of embodiment, preferably, also comprise between step 3 and step 4: by the pH value in reaction tank at 2-3.
In this kind of embodiment, can also comprise between step 3 and step 4: by redox reaction current potential at 250-400mV.
In this kind of embodiment, of the present invention better effective in order to make, also comprise between step 3 and step 4: by redox reaction control of Electric potentials at 300mV.
In this kind of embodiment, in step 4, the pH value in described filtering basin is 9-11.Chromic precipitation is realized in alkaline environment.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (6)
1. a sewage water treatment method, is characterized in that, the method comprises:
Step 1, by sewage collecting in reaction tank;
Step 2, adds S-WAT in reaction tank and hexavalent chrome reduction is trivalent chromium by sodium bisulfite;
Step 3, is stirred in reaction tank by mechanical arm;
Step 4, is extracted into sewage in alkaline filtering basin by taking out pump, and filters out throw out.
2. sewage water treatment method according to claim 1, is characterized in that, also comprises between step 3 and step 4: control the pH value in reaction tank at 1-5.
3. sewage water treatment method according to claim 2, is characterized in that, also comprises between step 3 and step 4: by the pH value in reaction tank at 2-3.
4. sewage water treatment method according to claim 1, is characterized in that, also comprises between step 3 and step 4: by redox reaction current potential at 250-400mV.
5. sewage water treatment method according to claim 1, is characterized in that, also comprises between step 3 and step 4: by redox reaction control of Electric potentials at 300mV.
6. sewage water treatment method according to claim 1, is characterized in that, in step 4, the pH value in described filtering basin is 9-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510405670.6A CN105000709A (en) | 2015-07-09 | 2015-07-09 | Sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510405670.6A CN105000709A (en) | 2015-07-09 | 2015-07-09 | Sewage treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105000709A true CN105000709A (en) | 2015-10-28 |
Family
ID=54373630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510405670.6A Pending CN105000709A (en) | 2015-07-09 | 2015-07-09 | Sewage treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105000709A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745644A (en) * | 2016-11-25 | 2017-05-31 | 南宁市黑晶信息技术有限公司 | A kind of high concentration chrome wastewater processing method |
| CN106745648A (en) * | 2016-11-25 | 2017-05-31 | 南宁市黑晶信息技术有限公司 | A kind of phenyl ethylamine sewage water treatment method |
| CN107244768A (en) * | 2017-07-30 | 2017-10-13 | 合肥徽工工业自动化工程有限公司 | A kind of chromyl sewage water treatment method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745644A (en) * | 2016-11-25 | 2017-05-31 | 南宁市黑晶信息技术有限公司 | A kind of high concentration chrome wastewater processing method |
| CN106745648A (en) * | 2016-11-25 | 2017-05-31 | 南宁市黑晶信息技术有限公司 | A kind of phenyl ethylamine sewage water treatment method |
| CN107244768A (en) * | 2017-07-30 | 2017-10-13 | 合肥徽工工业自动化工程有限公司 | A kind of chromyl sewage water treatment method |
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Address after: 241000 Anhui Province, Wuhu city Jinghu District Zhongjiang integrate Western Plaza B-101 Applicant after: WUHU JINYI MACHINERY CO., LTD. Address before: 241000 room five, building 402, Wuhu economic and Technological Development Zone, Anhui Applicant before: WUHU JINYI MACHINERY CO., LTD. |
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Application publication date: 20151028 |
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| WD01 | Invention patent application deemed withdrawn after publication |