CN112142224A - Waste water oxidation treatment method - Google Patents
Waste water oxidation treatment method Download PDFInfo
- Publication number
- CN112142224A CN112142224A CN202010971938.3A CN202010971938A CN112142224A CN 112142224 A CN112142224 A CN 112142224A CN 202010971938 A CN202010971938 A CN 202010971938A CN 112142224 A CN112142224 A CN 112142224A
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- Prior art keywords
- wastewater
- oxidation treatment
- polyacrylamide
- strong
- flocculating agent
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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
- C02F1/001—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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a wastewater oxidation treatment method, which comprises the following steps: adding a flocculating agent into the wastewater, stirring and standing for a certain time; adding a strong acid to the wastewater to adjust the wastewater to be acidic; adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; and filtering to complete the oxidation treatment of the wastewater. The invention selects proper flocculating agent to pretreat the wastewater and make the wastewater precipitate, and then carries out oxidation treatment on the pretreated wastewater, thereby greatly improving the efficiency of wastewater treatment and being suitable for oxidation treatment of various types of industrial wastewater.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a wastewater oxidation treatment method.
Background
Water pollution is a common environmental pollution problem. Common sources of water pollution include domestic wastewater, industrial wastewater, and the like. Wherein, a large part of industrial wastewater comes from the chemical production process. The wastewater generated in the chemical production process has high content of organic pollutants, and has the characteristics of high content of toxic and colored substances, more difficultly-degraded substances and the like. Therefore, conventional physicochemical and biochemical treatments have difficulty meeting emission requirements.
The waste water oxidation treatment method is one of waste water chemical treatment methods, is a method for oxidizing and decomposing pollutants in waste water by using a strong oxidant to purify the waste water, becomes an important means for treating biologically-nondegradable organic toxic pollutants, and has been applied to the treatment of waste water such as printing and dyeing, chemical industry, pesticides, papermaking, electroplating and printed board, pharmacy, hospitals, mines, garbage percolate and the like.
However, industrial wastewater has a complex composition including some fixed pollutants. In the conventional wastewater oxidation treatment method, due to the presence of the above-mentioned complex components, the redox reaction between the strong oxidant and the wastewater is susceptible, resulting in low wastewater treatment efficiency.
Disclosure of Invention
In view of the above, the present invention provides a wastewater oxidation treatment method, comprising: adding a flocculating agent into the wastewater, stirring and standing for a certain time; adding a strong acid to the wastewater to adjust the wastewater to be acidic; adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; and filtering to complete the oxidation treatment of the wastewater.
Optionally, the flocculant is at least one of polyaluminium chloride and polyacrylamide.
Optionally, the flocculant is a mixture of the polyaluminum chloride and the polyacrylamide; the mass ratio of the polyaluminium chloride to the polyacrylamide is 1: 2.
optionally, the certain time is 1-3 hours.
Optionally, the strong acid comprises at least one of hydrochloric acid, nitric acid.
Optionally, the acidic pH is 2-4.
Optionally, the strong oxidizer comprises at least one of sodium hypochlorite and potassium hypochlorite.
Optionally, the certain temperature is 50-60 ℃.
Optionally, wherein the time for oxidizing the wastewater is 2-4 hours.
In order to overcome the influence of pollutants in the industrial wastewater on the oxidizing efficiency of the oxidant, the invention selects a proper flocculating agent to pretreat the wastewater and precipitate the wastewater, and then carries out oxidation treatment on the pretreated wastewater, thereby greatly improving the efficiency of wastewater treatment and being suitable for various types of industrial wastewater oxidation treatment.
Detailed Description
In order to better understand the present invention, the following examples further illustrate the invention, the examples are only used for explaining the invention, not to constitute any limitation of the invention.
Example 1
A method for the oxidative treatment of wastewater comprising:
adding a flocculating agent into the wastewater, stirring and standing for a certain time; in this embodiment, the flocculant may be polyaluminium chloride and the polyacrylamide at a mass ratio of 1: 2, or a mixture thereof. The polyaluminium chloride and the polyacrylamide have good flocculation effect, and can flocculate and precipitate insoluble substances in the wastewater. Subsequently, the mixture was allowed to stand for 1 hour to precipitate insoluble matter to the bottom of the reaction vessel.
Subsequently, a strong acid is added to the wastewater to adjust the wastewater to acidity. In this embodiment, the strong acid may be hydrochloric acid, and the pH of the acidic wastewater may be 2.
Then, adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; in this embodiment, the strong oxidant may be sodium hypochlorite, and the certain temperature may be 50 ℃. The oxidation reaction time may be 2 hours.
And then filtering to finish the oxidation treatment of the wastewater. The filtration technique may be any known technique, for example, by selecting a suitable screen for filtration.
Example 2
A method for the oxidative treatment of wastewater comprising:
adding a flocculating agent into the wastewater, stirring and standing for a certain time; in this embodiment, the flocculant may be polyaluminium chloride and the polyacrylamide at a mass ratio of 1: 2, or a mixture thereof. The polyaluminium chloride and the polyacrylamide have good flocculation effect, and can flocculate and precipitate insoluble substances in the wastewater. Subsequently, it was allowed to stand for 3 hours to precipitate insoluble matter to the bottom of the reaction vessel.
Subsequently, a strong acid is added to the wastewater to adjust the wastewater to acidity. In this embodiment, the strong acid may be hydrochloric acid, and the pH of the acidic wastewater may be 4.
Then, adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; in this embodiment, the strong oxidant may be sodium hypochlorite, and the certain temperature may be 60 ℃. The oxidation reaction time may be 4 hours.
And then filtering to finish the oxidation treatment of the wastewater. The filtration technique may be any known technique, for example, by selecting a suitable screen for filtration.
Example 3
A method for the oxidative treatment of wastewater comprising:
adding a flocculating agent into the wastewater, stirring and standing for a certain time; in this embodiment, the flocculant may be polyaluminium chloride, and the insoluble matter in the wastewater may be flocculated and precipitated. Subsequently, it was allowed to stand for 2 hours to precipitate insoluble matter to the bottom of the reaction vessel.
Subsequently, a strong acid is added to the wastewater to adjust the wastewater to acidity. In this embodiment, the strong acid may be hydrochloric acid, and the pH of the acidic wastewater may be 3.
Then, adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; in this embodiment, the strong oxidant may be sodium hypochlorite, and the certain temperature may be 55 ℃. The oxidation reaction time may be 3 hours.
And then filtering to finish the oxidation treatment of the wastewater. The filtration technique may be any known technique, for example, by selecting a suitable screen for filtration.
Example 4
A method for the oxidative treatment of wastewater comprising:
adding a flocculating agent into the wastewater, stirring and standing for a certain time; in this embodiment, the flocculant may be polyaluminium chloride and the polyacrylamide at a mass ratio of 1: 2, or a mixture thereof. The polyaluminium chloride and the polyacrylamide have good flocculation effect, and can flocculate and precipitate insoluble substances in the wastewater. Subsequently, the mixture was allowed to stand for 1 hour to precipitate insoluble matter to the bottom of the reaction vessel.
Subsequently, a strong acid is added to the wastewater to adjust the wastewater to acidity. In this embodiment, the strong acid may be hydrochloric acid, and the pH of the acidic wastewater may be 3.
Then, adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; in this embodiment, the strong oxidant may be sodium hypochlorite, and the certain temperature may be 55 ℃. The oxidation reaction time may be 3 hours.
And then filtering to finish the oxidation treatment of the wastewater. The filtration technique may be any known technique, for example, by selecting a suitable screen for filtration.
Example 5
A method for the oxidative treatment of wastewater comprising:
adding a flocculating agent into the wastewater, stirring and standing for a certain time; in this embodiment, the flocculant may be polyaluminium chloride and the polyacrylamide at a mass ratio of 1: 2, or a mixture thereof. The polyaluminium chloride and the polyacrylamide have good flocculation effect, and can flocculate and precipitate insoluble substances in the wastewater. Subsequently, it was allowed to stand for 2 hours to precipitate insoluble matter to the bottom of the reaction vessel.
Subsequently, a strong acid is added to the wastewater to adjust the wastewater to acidity. In this embodiment, the strong acid may be hydrochloric acid, and the pH of the acidic wastewater may be 3.
Then, adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater; in this embodiment, the strong oxidant may be sodium hypochlorite, and the certain temperature may be 50 ℃. The oxidation reaction time may be 5 hours.
And then filtering to finish the oxidation treatment of the wastewater. The filtration technique may be any known technique, for example, by selecting a suitable screen for filtration.
It should be noted that the steps and methods adopted in the claims of the present invention are the same as those of the above-mentioned embodiments, and for the sake of avoiding redundancy, the present invention describes the preferred embodiments, but those skilled in the art can make other changes and modifications to these embodiments once they learn the basic inventive concept. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A wastewater oxidation treatment method is characterized by comprising the following steps:
adding a flocculating agent into the wastewater, stirring and standing for a certain time;
adding a strong acid to the wastewater to adjust the wastewater to be acidic;
adding a strong oxidant into the wastewater, heating to a certain temperature, and oxidizing the wastewater;
and filtering to complete the oxidation treatment of the wastewater.
2. The method for oxidation treatment of wastewater according to claim 1, characterized in that: the flocculating agent is at least one of polyaluminium chloride and polyacrylamide.
3. The method for eliminating black and odorous river channels according to claim 2, wherein the method comprises the following steps: the flocculant is a mixture of the polyaluminium chloride and the polyacrylamide; the mass ratio of the polyaluminium chloride to the polyacrylamide is 1: 2.
4. the method for oxidation treatment of wastewater according to claim 1, characterized in that: the certain time is 1-3 hours.
5. The method for oxidation treatment of wastewater according to claim 1, characterized in that: the strong acid comprises at least one of hydrochloric acid and nitric acid.
6. The method for oxidation treatment of wastewater according to claim 5, characterized in that: the acidic pH value is 2-4.
7. The method for oxidation treatment of wastewater according to claim 1, characterized in that: the strong oxidant comprises at least one of sodium hypochlorite and potassium hypochlorite.
8. The method for oxidation treatment of wastewater according to claim 1, characterized in that: the certain temperature is 50-60 ℃.
9. The method for oxidation treatment of wastewater according to claim 8, characterized in that: wherein the time for oxidizing the wastewater is 2-4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971938.3A CN112142224A (en) | 2020-09-16 | 2020-09-16 | Waste water oxidation treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971938.3A CN112142224A (en) | 2020-09-16 | 2020-09-16 | Waste water oxidation treatment method |
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| CN112142224A true CN112142224A (en) | 2020-12-29 |
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| CN202010971938.3A Pending CN112142224A (en) | 2020-09-16 | 2020-09-16 | Waste water oxidation treatment method |
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Citations (8)
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|---|---|---|---|---|
| CN1765762A (en) * | 2005-09-15 | 2006-05-03 | 浙江工商大学 | Aqueous ink waste water disposal process |
| CN101148299A (en) * | 2007-09-06 | 2008-03-26 | 肥城市宏源环保机械有限公司 | Method for governing glass fibre industrial waste water |
| CN102190387A (en) * | 2011-04-07 | 2011-09-21 | 清华大学 | Adsorption oxidation method for treating high-concentration acrylonitrile wastewater |
| CN106396242A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Difficultly-degradable wastewater treatment method |
| CN108751495A (en) * | 2018-06-11 | 2018-11-06 | 河南新野纺织股份有限公司 | A kind of wastewater in textile printing and dyeing industry processing method |
| CN108975554A (en) * | 2018-08-07 | 2018-12-11 | 广东鼎丰纸业有限公司 | The efficiently method of removal pulp-making waste-water COD |
| CN109626645A (en) * | 2018-12-28 | 2019-04-16 | 郑州幼儿师范高等专科学校 | A kind of chemical wastewater treatment technique |
| CN109678283A (en) * | 2018-12-07 | 2019-04-26 | 浙江染化宝检测服务有限公司 | A kind of technique for the treatment of textile dyeing waste water |
-
2020
- 2020-09-16 CN CN202010971938.3A patent/CN112142224A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765762A (en) * | 2005-09-15 | 2006-05-03 | 浙江工商大学 | Aqueous ink waste water disposal process |
| CN101148299A (en) * | 2007-09-06 | 2008-03-26 | 肥城市宏源环保机械有限公司 | Method for governing glass fibre industrial waste water |
| CN102190387A (en) * | 2011-04-07 | 2011-09-21 | 清华大学 | Adsorption oxidation method for treating high-concentration acrylonitrile wastewater |
| CN106396242A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Difficultly-degradable wastewater treatment method |
| CN108751495A (en) * | 2018-06-11 | 2018-11-06 | 河南新野纺织股份有限公司 | A kind of wastewater in textile printing and dyeing industry processing method |
| CN108975554A (en) * | 2018-08-07 | 2018-12-11 | 广东鼎丰纸业有限公司 | The efficiently method of removal pulp-making waste-water COD |
| CN109678283A (en) * | 2018-12-07 | 2019-04-26 | 浙江染化宝检测服务有限公司 | A kind of technique for the treatment of textile dyeing waste water |
| CN109626645A (en) * | 2018-12-28 | 2019-04-16 | 郑州幼儿师范高等专科学校 | A kind of chemical wastewater treatment technique |
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Application publication date: 20201229 |
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