CN105967383A - Method for treating dimethyl sulfoxide in waste water by oxidization - Google Patents
Method for treating dimethyl sulfoxide in waste water by oxidization Download PDFInfo
- Publication number
- CN105967383A CN105967383A CN201610340788.XA CN201610340788A CN105967383A CN 105967383 A CN105967383 A CN 105967383A CN 201610340788 A CN201610340788 A CN 201610340788A CN 105967383 A CN105967383 A CN 105967383A
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- CN
- China
- Prior art keywords
- dimethyl sulfoxide
- waste water
- hydrogen peroxide
- value
- oxidation treatment
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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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Classifications
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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
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
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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
- 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Abstract
The invention belongs to the technical field of industrial wastewater treatment in environment protection, and particularly relates to a method for treating primary wastewater generated in energetic plasticizer production. The method comprises the following steps: adding a reagent consisting of ferrous ions and hydrogen peroxide in a certain proportion under the condition that the pH value of dimethyl sulfoxide wastewater is pre-regulated to be acidic, so as to oxidize dimethyl sulfoxide into water, carbon dioxide and inorganic salt; after reacting, regulating the pH value to be neutral; and settling for further treating precipitates in the wastewater to obtain effluent finally. The method is simple in process flow and low in cost, and has a dimethyl sulfoxide removal rate of 95 percent.
Description
Technical field
The invention belongs to the industrial waste water treatment of environmental conservation, be specifically related to a kind of energetic plasticiser
The method of wastewater treatment produced in production.
Background technology
Dimethyl sulfoxide is widely used in fields such as medicine, chemical industry, electronics as solvent or intermediate, although
The toxicity of dimethyl sulfoxide itself is the highest, but uses bioanalysis that the waste water containing dimethyl sulfoxide is processed heat relatively
For difficulty, because aerobe method can not reach higher palliating degradation degree, and anaerobism rule can produce volatility
And toxic products (dimethyl disulfide and hydrogen sulfide) so that processing procedure is difficult to control to.Therefore, it is necessary to research
Use chemical reagent method that dimethyl sulfoxide in waste water is processed.
Within 1894, H.Fenton finds, hydrogen peroxide and ferrous ion can be with the efficient oxidations in acidic aqueous solution
Decomposing tartaric acid, therefore, this reagent is referred to as fenton reagent by people.Fe2+With H2O2React quickly,
Generate OH, OH and there is the strongest oxidability.There is Fe in course of reaction simultaneously3+Generate, Fe3+Permissible
With H2O2Reaction generates Fe2+, the Fe of generation2+Again with H2O2Reaction generates OH, the OH of generation can enter one
Walking and react generation organic free radical R with Organic substance RH, R aoxidizes further, makes organic constitution generation carbon
Chain interruption, is finally oxidized into CO2、H2O and inorganic salt, have response speed fast, and non-secondary pollution etc. is excellent
Point, the organic pollution being widely used in difficult for biological degradation processes.
Summary of the invention
It is difficult to carry out a biological disposal upon for dimethyl sulfoxide in current waste water, it is an object of the invention to provide a kind of oxygen
Change processes the method for dimethyl sulfoxide in waste water.
The method uses ferrous ion to react with hydrogen peroxide, produces intermediate product OH, OH and has strong oxygen
The property changed, can be with oxidation processes dimethyl sulfoxide.It is sub-that the method can not only be effectively reduced dimethyl in waste water
The content of sulfone, and whole course of reaction does not has secondary pollution, reaction to generate CO2、H2O and inorganic salt,
And technological process is simple, significantly reduces the processing cost of dimethyl sulfoxide in waste water.
To achieve these goals, technical scheme is as follows:
A kind of method of dimethyl sulfoxide in sewage oxidation treatment, first adds a certain amount of acid in waste water,
The pH value of waste water is regulated to acid, is subsequently adding a certain proportion of fenton agent treated dimethyl sulfoxide,
After having reacted, the pH value of regulation waste water, to neutral or alkalescence, stands and removes precipitation, obtain water outlet.
In a kind of preferred sewage oxidation treatment, the method for dimethyl sulfoxide, comprises the steps:
(1) analysis detects the content of dimethyl sulfoxide in waste water；
(2) in regulation waste water, the pH value of dimethyl sulfoxide is to 1～5, according to ferrous sulfate and dimethyl sulfoxide
Mol ratio be 0.1-10:5, add ferrous sulfate；
(3) it is 1:0.5～5 according to the mol ratio of ferrous sulfate Yu hydrogen peroxide in waste water, adds hydrogen peroxide,
Carry out redox reaction；
(4), after reaction terminates, the pH value of regulation waste water, to 6～9, stands and removes precipitation, finally obtain out
Water.
In above-mentioned steps (2), the acid of regulation waste water can be hydrochloric acid, sulphuric acid or nitric acid.
Described in step (2) ferrous sulfate under agitation add.
In step (3), in hydrogen peroxide, the volume fraction of hydrogen peroxide is 20%～30%.
In step (3), institute's hydrogen peroxide is under agitation added dropwise over.
In step (4), the reagent of regulation pH value is sodium carbonate or sodium hydroxide.
Detailed description of the invention:
Below in conjunction with example, the present invention is described in further detail.
Embodiment 1
Take dimethyl sulfoxide wastewater 270g as in 1000ml beaker, when after solution ph regulation to acidity,
Under agitation add 76g ferrous sulfate, be added slowly with stirring 107g hydrogen peroxide the most again.Treat that system is anti-
After Ying, add sodium hydroxide, the pH value of solution is regulated to neutral or alkalescence, continues stirring 1 little
Time, stand after solution cools down, filter, remove precipitation, obtain required sample, product is carried out physics and chemistry and divides
Analysis.Analysis result: the mass concentration of dimethyl sulfoxide is reduced to 5.8% by 28.9%.
Embodiment 2
Take dimethyl sulfoxide wastewater 270g as in 1000ml beaker, when after solution ph regulation to acidity,
It is added slowly with stirring 100g ferrous sulfate, the most under agitation adds 143g hydrogen peroxide.Treat dioxygen
After water adds, add sodium hydroxide, the pH value of solution is regulated to neutral or alkalescence, continues stirring
1 hour, stand after solution cools down, filter, remove precipitation, obtain required sample, product is carried out physics and chemistry
Analyze.Analysis result: the mass concentration of dimethyl sulfoxide is dropped to 2.5% by 28.9%.
Embodiment 3
Take dimethyl sulfoxide wastewater 270g as in 1000ml beaker, when after solution ph regulation to acidity,
Under agitation add 214g hydrogen peroxide, be added slowly with stirring 152g ferrous sulfate the most again.Treat dioxygen
Water after completion of the reaction, adds the most load weighted sodium hydroxide, regulates the pH value of solution to neutral or weak base
Property, continue stirring, stand after solution cools down, filter, remove precipitation, products obtained therefrom is carried out physics and chemistry and divides
Analysis.Analysis result: the mass concentration of dimethyl sulfoxide is reduced to 1.5% by 28.9%.
Embodiment 4
Take dimethyl sulfoxide wastewater 270g as in 1000ml beaker, when after solution ph regulation to acidity,
Under agitation add 152g ferrous sulfate, be added slowly with stirring 214g hydrogen peroxide the most again.Treat dioxygen
Water after completion of the reaction, adds the most load weighted sodium hydroxide, regulates the pH value of solution to neutral or weak base
Property, stand after solution cools down, filter, remove precipitation, obtain required sample, products obtained therefrom is carried out point
Analysis detection.Analysis records, and the mass concentration of dimethyl sulfoxide is reduced to 0.33% by initial 28.9%.
Claims (6)
1. the method for dimethyl sulfoxide in a sewage oxidation treatment, it is characterised in that comprise the steps:
(1) mass concentration of dimethyl sulfoxide in detection waste water is analyzed；
(2) in waste water, add acid, the pH value of waste water is regulated to 1～5, according to ferrous sulfate and diformazan
The mol ratio of base sulfoxide is 0.1～10:5, adds ferrous sulfate；
(3) it is 1:0.5～5 according to the mol ratio of ferrous sulfate Yu hydrogen peroxide in waste water, adds hydrogen peroxide,
Carry out redox reaction；
(4), after reaction terminates, the pH value of regulation waste water, to 6～9, stands and removes precipitation, finally obtain out
Water.
The method of dimethyl sulfoxide, its feature in a kind of sewage oxidation treatment the most according to claim 1
Being, in described step (2), the acid of regulation pH value is sulphuric acid, nitric acid or hydrochloric acid.
The method of dimethyl sulfoxide, its feature in a kind of sewage oxidation treatment the most according to claim 1
Being, adding ferrous sulfate in described step (2) should under agitation add.
The method of dimethyl sulfoxide, its feature in a kind of sewage oxidation treatment the most according to claim 1
It is, described step (3) adds and is added dropwise under hydrogen peroxide employing stirring.
The method of dimethyl sulfoxide, its feature in a kind of sewage oxidation treatment the most according to claim 1
Being, in described hydrogen peroxide, the volume fraction of hydrogen peroxide is 30%.
The method of dimethyl sulfoxide, its feature in a kind of sewage oxidation treatment the most according to claim 1
Being, in described step (4), reaction regulates the reagent of pH value after terminating is sodium carbonate or sodium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610340788.XA CN105967383A (en) | 2016-05-20 | 2016-05-20 | Method for treating dimethyl sulfoxide in waste water by oxidization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610340788.XA CN105967383A (en) | 2016-05-20 | 2016-05-20 | Method for treating dimethyl sulfoxide in waste water by oxidization |
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|---|---|
| CN105967383A true CN105967383A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610340788.XA Pending CN105967383A (en) | 2016-05-20 | 2016-05-20 | Method for treating dimethyl sulfoxide in waste water by oxidization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132255A (en) * | 2017-04-28 | 2017-09-05 | 中简科技股份有限公司 | A kind of method of testing of dimethyl sulfoxide (DMSO) pH value |
| CN110683993A (en) * | 2019-10-16 | 2020-01-14 | 黄冈师范学院 | Preparation method and application of ferrous phthalhydrazide |
| CN111732257A (en) * | 2020-07-08 | 2020-10-02 | 重庆化工职业学院 | Dimethyl sulfoxide waste water treatment reactor |
| CN112707492A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Use of persulfates in the treatment of dimethyl sulfoxide |
Citations (7)
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| JP2000263069A (en) * | 1999-03-16 | 2000-09-26 | Kurita Water Ind Ltd | Method and apparatus for treating waste water containing dimethyl sulfoxide |
| CN101195595A (en) * | 2007-12-12 | 2008-06-11 | 湖北兴发化工集团股份有限公司 | Method for recycling dimethyl sulfone and sodium nitrate from dimethyl sulfoxide waste slag |
| CN101402506A (en) * | 2008-11-07 | 2009-04-08 | 湖北兴发化工集团股份有限公司 | Process for treating dimethyl sulfoxide wastewater with photocatalysis and oxidization combined film bioreactor |
| CN101570368A (en) * | 2008-04-29 | 2009-11-04 | 中国石油化工股份有限公司 | Method for processing waste water by fenton oxidation |
| CN102838201A (en) * | 2012-09-28 | 2012-12-26 | 天津莱特化工有限公司 | Process for treating industrial wastewater by enhanced Fenton method |
| CN202744374U (en) * | 2012-06-18 | 2013-02-20 | 上海问鼎环保科技有限公司 | Device for full-automatically treating dimethyl sulfoxide waste water |
| CN105017106A (en) * | 2014-04-29 | 2015-11-04 | 中国石油化工股份有限公司 | Method for oxidizing dimethyl sulfoxide |
-
2016
- 2016-05-20 CN CN201610340788.XA patent/CN105967383A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000263069A (en) * | 1999-03-16 | 2000-09-26 | Kurita Water Ind Ltd | Method and apparatus for treating waste water containing dimethyl sulfoxide |
| CN101195595A (en) * | 2007-12-12 | 2008-06-11 | 湖北兴发化工集团股份有限公司 | Method for recycling dimethyl sulfone and sodium nitrate from dimethyl sulfoxide waste slag |
| CN101570368A (en) * | 2008-04-29 | 2009-11-04 | 中国石油化工股份有限公司 | Method for processing waste water by fenton oxidation |
| CN101402506A (en) * | 2008-11-07 | 2009-04-08 | 湖北兴发化工集团股份有限公司 | Process for treating dimethyl sulfoxide wastewater with photocatalysis and oxidization combined film bioreactor |
| CN202744374U (en) * | 2012-06-18 | 2013-02-20 | 上海问鼎环保科技有限公司 | Device for full-automatically treating dimethyl sulfoxide waste water |
| CN102838201A (en) * | 2012-09-28 | 2012-12-26 | 天津莱特化工有限公司 | Process for treating industrial wastewater by enhanced Fenton method |
| CN105017106A (en) * | 2014-04-29 | 2015-11-04 | 中国石油化工股份有限公司 | Method for oxidizing dimethyl sulfoxide |
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| 李皓等: "UV-Fenton氧化法处理DMSO废水的应用研究", 《环境工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132255A (en) * | 2017-04-28 | 2017-09-05 | 中简科技股份有限公司 | A kind of method of testing of dimethyl sulfoxide (DMSO) pH value |
| CN110683993A (en) * | 2019-10-16 | 2020-01-14 | 黄冈师范学院 | Preparation method and application of ferrous phthalhydrazide |
| CN110683993B (en) * | 2019-10-16 | 2022-11-04 | 黄冈师范学院 | Preparation method and application of ferrous phthalhydrazide |
| CN112707492A (en) * | 2019-10-24 | 2021-04-27 | 中国石油化工股份有限公司 | Use of persulfates in the treatment of dimethyl sulfoxide |
| CN111732257A (en) * | 2020-07-08 | 2020-10-02 | 重庆化工职业学院 | Dimethyl sulfoxide waste water treatment reactor |
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