CN103663788A - Acid and alkali wastewater treatment technology - Google Patents
Acid and alkali wastewater treatment technology Download PDFInfo
- Publication number
- CN103663788A CN103663788A CN201310670007.XA CN201310670007A CN103663788A CN 103663788 A CN103663788 A CN 103663788A CN 201310670007 A CN201310670007 A CN 201310670007A CN 103663788 A CN103663788 A CN 103663788A
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- China
- Prior art keywords
- sewage
- value
- add
- acid
- treatment process
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002253 acid Substances 0.000 title claims abstract description 23
- 238000004065 wastewater treatment Methods 0.000 title abstract 4
- 239000003513 alkali Substances 0.000 title abstract 3
- 238000011282 treatment Methods 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 3
- 239000010865 sewage Substances 0.000 claims description 46
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 21
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 20
- 239000011259 mixed solution Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000003002 pH adjusting agent Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000001112 coagulating effect Effects 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000011221 initial treatment Methods 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 9
- 239000012847 fine chemical Substances 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Paper (AREA)
Abstract
The invention discloses an acid and alkali wastewater treatment technology. The pH value of wastewater is adjusted to the required range by adding a pH regulator, a wastewater treatment agent applicable to the range of the pH value is added within the range of the pH value; supernate is participated and recovered, the pH value of the wastewater can be adjusted after once treatment; and the wastewater is repeatedly processed to achieve the discharge or recovery standard. The acid and alkali wastewater treatment technology is high in treatment efficiency, and wide in application range, can be applied to pretreatment and advanced treatment of petrochemical wastewater, and also can be applied to pretreatment and advanced treatment of the wastewater in papermaking, pharmacy, partial fine chemical industry and the like.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of soda acid sewage treatment process.
Background technology
Along with industrial expansion, improving constantly of people's living standard, mankind's water consumption is also increasing, sanitary sewage and industrial sewage are also more and more, if the not treated nature that is just discharged into of sewage, will inevitably be to naturally producing and pollute, therefore how appropriate disposing of sewage becomes the problem that is related to descendants's existence.Industrial sewage, for sanitary sewage, has more hazardness, and the industrial sewage processing scheme of therefore finding high efficiency, low cost is extremely urgent.And industrial sewage is because containing different factors, so the aobvious acidity having, the aobvious alkalescence having, current sewage disposal all has certain limitation, can not be widely used.The invention provides a kind of sewage treatment process, applicable to soda acid sewage.
Summary of the invention
Object of the present invention is exactly to provide a kind of soda acid sewage treatment process for the defect of above-mentioned existence.Sewage-treating agent in this technique is all used under the higher environment of itself activity, so processing efficiency is high.And carry out step-by-step processing for sewage, the different objectionable impuritiess in can step-by-step processing sewage, reach advanced treatment.The pre-treatment and the advanced treatment that can be used for petrochemical wastewater, can also be for pre-treatment and the advanced treatment of the waste water such as papermaking, pharmacy, part fine chemistry industry, applied range.
Soda acid sewage treatment technology scheme of the present invention is, by adding pH adjusting agent, regulate the pH value of sewage to required scope, within the scope of this pH value, add the sewage-treating agent that is suitable for pH value scope, precipitation reclaims supernatant liquor, after primary treatment, can regulate the pH value of sewage, then sewage is carried out to re-treatment to discharging or recovery standard.
Specifically comprise the following steps:
(1) in treatment sewage, add pH adjusting agent to regulate pH value to add FeSO to 5.5-6.0
47H
2o, then add acidic oxidation agent to regulate pH value to 3.0-6.0, control redox potential is 180-220mv, stirring reaction 10-20min makes medicament and fully contacts and react, and obtains mixed solution;
(2) add the pH value of pH adjusting agent regulating step (1) gained mixed solution to 8.0-9.0, then add polymerize aluminum chloride and polyacrylamide, mix;
(3) step (2) gained mixed solution is stirred to 3-5min, make coagulating abundant, staticly settle, supernatant liquor is processing water outlet.
PH adjusting agent is at least one in hydrochloric acid, sulfuric acid, sodium hydroxide, sodium carbonate, calcium oxide.
In step (1), acidic oxidation agent is mixing solutions or the nitric acid of hydrochloric acid and hydrogen peroxide.
In step (1), every processing 1L sewage, adds 1-2mg polyacrylamide and 1-2mg polymerize aluminum chloride in step (2).
In step (3), mixed solution stirring velocity is 50-300r/min.
Beneficial effect of the present invention is: in soda acid sewage treatment process of the present invention, sewage-treating agent is all used under the higher environment of itself activity, so processing efficiency is high.And carry out step-by-step processing for sewage, the different objectionable impuritiess in can step-by-step processing sewage, reach advanced treatment.The pre-treatment and the advanced treatment that can be used for petrochemical wastewater, can also be for pre-treatment and the advanced treatment of the waste water such as papermaking, pharmacy, part fine chemistry industry, applied range.
Embodiment:
In order to understand better the present invention, with specific examples, describe technical scheme of the present invention in detail below, but the present invention is not limited thereto.
Embodiment 1
Soda acid sewage treatment process of the present invention, comprises the following steps:
(1) in treatment sewage, add salt acid for adjusting pH value to add FeSO to 5.5-6.0
47H
2o, then add nitre acid for adjusting pH value to 3.0-6.0, control redox potential is 180-220mv, stirring reaction 10-20min makes medicament and fully contacts and react, and obtains mixed solution;
(2) add the pH value of sodium carbonate regulating step (1) gained mixed solution to 8.0-9.0, then add polymerize aluminum chloride and polyacrylamide, mix;
(3) step (2) gained mixed solution 150r/min is stirred to 3-5min, make coagulating abundant, staticly settle, supernatant liquor is processing water outlet.
In step (1), every processing 1L sewage, adds 1-2mg polyacrylamide and 1-2mg polymerize aluminum chloride in step (2).
Embodiment 2
Soda acid sewage treatment process of the present invention, comprises the following steps:
(1) in treatment sewage, add sulphur acid for adjusting pH value to add FeSO to 5.5-6.0
47H
2o, then add hydrochloric acid and hydrogen peroxide to regulate pH value to 3.0-6.0, control redox potential is 180-220mv, stirring reaction 10-20min makes medicament and fully contacts and react, and obtains mixed solution;
(2) add the pH value of sodium hydroxide regulating step (1) gained mixed solution to 8.0-9.0, then add polymerize aluminum chloride and polyacrylamide, mix;
(3) step (2) gained mixed solution 300r/min is stirred to 3-5min, make coagulating abundant, staticly settle, supernatant liquor is processing water outlet.
In step (1), every processing 1L sewage, adds 1-2mg polyacrylamide and 1-2mg polymerize aluminum chloride in step (2).
Embodiment 3
Soda acid sewage treatment process of the present invention, comprises the following steps:
(1) in treatment sewage, add salt acid regulator to regulate pH value to add FeSO to 5.5-6.0
47H
2o, then add nitre acid for adjusting pH value to 3.0-6.0, control redox potential is 180-220mv, stirring reaction 10-20min makes medicament and fully contacts and react, and obtains mixed solution;
(2) add the pH value of calcium oxide regulating step (1) gained mixed solution to 8.0-9.0, then add polymerize aluminum chloride and polyacrylamide, mix;
(3) step (2) gained mixed solution 200r/min is stirred to 3-5min, make coagulating abundant, staticly settle, supernatant liquor is processing water outlet.
In step (1), every processing 1L sewage, adds 1-2mg polyacrylamide and 1-2mg polymerize aluminum chloride in step (2).
Claims (6)
1. a soda acid sewage treatment process, it is characterized in that, by adding pH adjusting agent, regulate the pH value of sewage to required scope, within the scope of this pH value, add the sewage-treating agent that is suitable for pH value scope, precipitation reclaims supernatant liquor, after primary treatment, can regulate the pH value of sewage, then sewage is carried out to re-treatment to discharging or recovery standard.
2. soda acid sewage treatment process according to claim 1, is characterized in that, comprises the following steps:
(1) in treatment sewage, add pH adjusting agent to regulate pH value to add FeSO to 5.5-6.0
47H
2o, then add acidic oxidation agent to regulate pH value to 3.0-6.0, control redox potential is 180-220mv, stirring reaction 10-20min makes medicament and fully contacts and react, and obtains mixed solution;
(2) add the pH value of pH adjusting agent regulating step (1) gained mixed solution to 8.0-9.0, then add polymerize aluminum chloride and polyacrylamide, mix;
(3) step (2) gained mixed solution is stirred to 3-5min, make coagulating abundant, staticly settle, supernatant liquor is processing water outlet.
3. soda acid sewage treatment process according to claim 2, is characterized in that, pH adjusting agent is at least one in hydrochloric acid, sulfuric acid, sodium hydroxide, sodium carbonate, calcium oxide.
4. soda acid sewage treatment process according to claim 2, is characterized in that, in step (1), acidic oxidation agent is mixing solutions or the nitric acid of hydrochloric acid and hydrogen peroxide.
5. soda acid sewage treatment process according to claim 2, is characterized in that, in step (1), every processing 1L sewage, adds 1-2mg polyacrylamide and 1-2mg polymerize aluminum chloride in step (2).
6. soda acid sewage treatment process according to claim 2, is characterized in that, in step (3), mixed solution stirring velocity is 50-300r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670007.XA CN103663788A (en) | 2013-12-11 | 2013-12-11 | Acid and alkali wastewater treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310670007.XA CN103663788A (en) | 2013-12-11 | 2013-12-11 | Acid and alkali wastewater treatment technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103663788A true CN103663788A (en) | 2014-03-26 |
Family
ID=50302693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310670007.XA Pending CN103663788A (en) | 2013-12-11 | 2013-12-11 | Acid and alkali wastewater treatment technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103663788A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979712A (en) * | 2014-05-21 | 2014-08-13 | 郑新伟 | Coking wastewater pretreatment method and coking wastewater pretreatment system |
| WO2018133356A1 (en) * | 2017-01-18 | 2018-07-26 | 山东京博石油化工有限公司 | Method for treating petrochemical alkaline residue wastewater |
| CN117282349A (en) * | 2023-10-08 | 2023-12-26 | 南通晶悟包装制品有限公司 | Preparation method of composite sewage treatment agent |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56158194A (en) * | 1980-05-09 | 1981-12-05 | Kurita Kasen Kk | Treatment of excavation sludge water |
| CN101186402A (en) * | 2007-11-27 | 2008-05-28 | 华泰集团有限公司 | Fenton two-stage method oxidation processing technique for paper-making pulping waste water |
| CN101525190A (en) * | 2009-02-26 | 2009-09-09 | 江苏艾特克环境工程设计研究院有限公司 | Efficient wastewater treating process based on Fenton reaction |
| CN101805093A (en) * | 2010-03-10 | 2010-08-18 | 中国科学院生态环境研究中心 | Scale advanced treatment method for livestock and poultry farming waste water |
| CN102701480A (en) * | 2012-06-04 | 2012-10-03 | 中国环境科学研究院 | Sewage treatment method |
| CN102757140A (en) * | 2012-07-30 | 2012-10-31 | 南京理工大学常熟研究院有限公司 | Method for treating industrial sewage by adopting combination of PFS (Polymeric Ferric Sulfate) coagulation and Fenton |
| CN103342424A (en) * | 2013-07-15 | 2013-10-09 | 枣庄市申龙水务有限公司 | Advanced treatment process and equipment for refractory wastewater |
-
2013
- 2013-12-11 CN CN201310670007.XA patent/CN103663788A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56158194A (en) * | 1980-05-09 | 1981-12-05 | Kurita Kasen Kk | Treatment of excavation sludge water |
| CN101186402A (en) * | 2007-11-27 | 2008-05-28 | 华泰集团有限公司 | Fenton two-stage method oxidation processing technique for paper-making pulping waste water |
| CN101525190A (en) * | 2009-02-26 | 2009-09-09 | 江苏艾特克环境工程设计研究院有限公司 | Efficient wastewater treating process based on Fenton reaction |
| CN101805093A (en) * | 2010-03-10 | 2010-08-18 | 中国科学院生态环境研究中心 | Scale advanced treatment method for livestock and poultry farming waste water |
| CN102701480A (en) * | 2012-06-04 | 2012-10-03 | 中国环境科学研究院 | Sewage treatment method |
| CN102757140A (en) * | 2012-07-30 | 2012-10-31 | 南京理工大学常熟研究院有限公司 | Method for treating industrial sewage by adopting combination of PFS (Polymeric Ferric Sulfate) coagulation and Fenton |
| CN103342424A (en) * | 2013-07-15 | 2013-10-09 | 枣庄市申龙水务有限公司 | Advanced treatment process and equipment for refractory wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 王春敏等: "Fenton-混凝法处理焦化废水的实验研究", 《环境污染治理技术与设备》, vol. 7, no. 3, 31 March 2006 (2006-03-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979712A (en) * | 2014-05-21 | 2014-08-13 | 郑新伟 | Coking wastewater pretreatment method and coking wastewater pretreatment system |
| CN103979712B (en) * | 2014-05-21 | 2016-01-27 | 郑新伟 | A kind of coking wastewater pretreatment method |
| WO2018133356A1 (en) * | 2017-01-18 | 2018-07-26 | 山东京博石油化工有限公司 | Method for treating petrochemical alkaline residue wastewater |
| US10710906B2 (en) | 2017-01-18 | 2020-07-14 | Shandong Chambroad Petrochemicals Co., Ltd. | Method for treatment of petrochemical spent caustic wastewater |
| CN117282349A (en) * | 2023-10-08 | 2023-12-26 | 南通晶悟包装制品有限公司 | Preparation method of composite sewage treatment agent |
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Application publication date: 20140326 |