CN103848513B - A kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction - Google Patents
A kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction Download PDFInfo
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- CN103848513B CN103848513B CN201210495560.XA CN201210495560A CN103848513B CN 103848513 B CN103848513 B CN 103848513B CN 201210495560 A CN201210495560 A CN 201210495560A CN 103848513 B CN103848513 B CN 103848513B
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Abstract
The invention belongs to environmental technology field, particularly relate to a kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction and device thereof, it comprises equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener that pipeline successively connects, and described sludge thickener is connected with plate-and-frame filter press.Technical process is simple, is easy to the automatic operating realizing waste water disposal facility; Adopt Fenton advanced oxidation as pretreatment technology, improve the fluorine removing rate of follow-up coagulating sedimentation; Make the clearance of fluorine high.
Description
Technical field
The invention belongs to environmental technology field, particularly relate to a kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction and device thereof.
Background technology
While the development of modern industry, discharged a large amount of high-concentration fluorine-contained trade effluents, these waste water containing the fluorine in fluorion (F-) form, are generally difficult points in wastewater processing technology.And a lot of enterprise there is no perfect treatment facility to these waste water and is processed, the fluorine in wastewater content of discharge exceedes discharging standards, fluorinion concentration has far exceeded 10mg/L, causes a lot of threat while seriously polluting the environment that the mankind depend on for existence to the health of the mankind.
Current, the treatment process of domestic and international high-concentration fluorine-containing waste water has several, uses more method mainly chemical precipitation method, flocculent precipitation and absorption method.Chemical precipitation method is generally used for process high-concentration fluorine-containing waste water, and due to simple to operate, low cost is effective, therefore uses comparatively extensive.Contrary with chemical precipitation method, coagulation sedimentation is generally only applicable to fluorine-containing lower wastewater treatment, and first high-concentration fluorine-containing waste water will, through chemical precipitation method through coagulation, then adopt coagulation sedimentation again to remove fluorine.Absorption method is mainly applicable to the advanced treatment of the less tap water of the water yield, and processing costs is high comparatively speaking, and operation is more loaded down with trivial details.Certainly, each have their own use field of other certain methods and advantage.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of technique is simple, the fluorine-containing wastewater treatment method based on Fenton oxidation reaction of the fluorine removing rate that improves follow-up coagulating sedimentation and device thereof.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction, comprises the following steps:
A. oxidizing reaction: add H in fluoride waste
2sO
4adjustment pH is 2-3, and adds H
2o
2with FeSO
4carry out the reaction of Fenton advanced oxidation, the reaction times is 8 hours.
B. coagulating: add CaO and NaOH solution in the waste water through step a. oxidizing reaction, and adjust pH to 11, reacts 30 minutes.
C. dosing reaction in the middle of: add phosphorus acid for adjusting pH in useless after coagulation, this pH value is 7, and reacts 30-40 minute.
D. flocculation reaction: add polymeric flocculant in the water after coagulating treatment and carry out flocculation reaction, the reaction times is 20-30 minute.
E. precipitate and separate: the waste water after flocculation reaction again enters settling tank and carries out mud-water separation, sedimentation time is 120-150 minute.
Based on a fluorine-containing wastewater treatment method device for Fenton oxidation reaction, it comprises equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener that pipeline successively connects, and described sludge thickener is connected with plate-and-frame filter press.
As the further optimization of technique scheme, described settling tank also pipeline is connected with clean water basin.
As the further optimization of technique scheme, described clean water basin are provided with clear water output.
As the further optimization of technique scheme, described plate-and-frame filter press is provided with dewatered sludge process outlet.
The present invention is a kind of based on the fluorine-containing wastewater treatment method of Fenton oxidation reaction and the beneficial effect main manifestations of device thereof is: technical process is simple, is easy to the automatic operating realizing waste water disposal facility; Adopt Fenton advanced oxidation as pretreatment technology, improve the fluorine removing rate of follow-up coagulating sedimentation; Make the clearance of fluorine high.
Accompanying drawing explanation
Fig. 1 is the square frame principle schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the invention is described:
As shown in Figure 1, a kind of based on the fluorine-containing wastewater treatment method of Fenton oxidation reaction and the preferred forms of device thereof as the present invention, it comprises the following steps:
A. oxidizing reaction: add H in fluoride waste
2sO
4adjustment pH is 2-3, and adds H
2o
2with FeSO
4carry out the reaction of Fenton advanced oxidation, the reaction times is 8 hours.
B. coagulating: add CaO and NaOH solution in the waste water through step a. oxidizing reaction, and adjust pH to 11, reacts 30 minutes.
C. dosing reaction in the middle of: add phosphorus acid for adjusting pH in useless after coagulation, this pH value is 7, and reacts 30-40 minute.
D. flocculation reaction: add polymeric flocculant in the water after coagulating treatment and carry out flocculation reaction, the reaction times is 20-30 minute.
E. precipitate and separate: the waste water after flocculation reaction again enters settling tank and carries out mud-water separation, sedimentation time is 120-150 minute.
Based on a fluorine-containing wastewater treatment method device for Fenton oxidation reaction, it comprises equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener that pipeline successively connects, and described sludge thickener is connected with plate-and-frame filter press.
Described settling tank also pipeline is connected with clean water basin.
Described clean water basin are provided with clear water output.
Described plate-and-frame filter press is provided with dewatered sludge process outlet.
The present embodiment is in the specific implementation:
(1) equalizing tank: because the waste water quality that discharges in production process and the water yield have unstable, therefore equalizing tank is set waste water is carried out homogeneous, all measured.
(2) oxidation pond: waste water promotes through lift pump and enters the oxidation pond being provided with aeration agitation, regulates pH and adds H
2o
2waste liquid carries out oxidizing reaction, will disturb the material oxidation removal in addition of fluorion coagulating sedimentation in waste water.Oxidation time is about 8h.
(3) coagulation basin: the water outlet after peroxidation, from flowing into coagulation basin, adds CaO and regulates pH to 6, then add NaOH adjustment pH to 11, reaction 30min.Adopt aeration agitation in coagulation basin, the reaction times is 30min.
(4) dosing reaction tank: add phosphorus acid for adjusting pH to 7 in coagulation basin water outlet, the phosphoric acid salt precipitation of generation can be used as the cohesion tuberculosis of flocculation.
(5) flocculation basin: add polyacrylamide in the water outlet of above-mentioned steps, the configuration concentration of polyacrylamide is 1 ‰, and dosage is 2-3ml/L.Aeration agitation is established in coagulation, flocculation basin are equal.
(6) settling tank: flocculation basin water outlet carries out mud-water separation from flowing into settling tank, and the fluorochemical being flocculated precipitation in waste water is removed by precipitation.
By reference to the accompanying drawings the preferred embodiment for the present invention is explained in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Do not depart from the spirit and scope of the present invention and can make other changes many and remodeling.Should be appreciated that and the invention is not restricted to specific embodiment, scope of the present invention is defined by the following claims.
Claims (1)
1., based on a fluorine-containing wastewater treatment method for Fenton oxidation reaction, it is characterized in that, comprise the following steps:
A. oxidizing reaction: add H in fluoride waste
2sO
4adjustment pH is 2-3, and adds H
2o
2with FeSO
4carry out the reaction of Fenton advanced oxidation, the reaction times is 8 hours;
B. coagulating: add CaO and regulate pH to 6 in the waste water through step a. oxidizing reaction, then add NaOH adjustment pH to 11, react 30 minutes;
C. dosing reaction in the middle of: add phosphorus acid for adjusting pH in the waste water after coagulation, this pH value is 7, and reacts 30-40 minute;
D. flocculation reaction: add polymeric flocculant in the water after coagulating treatment and carry out flocculation reaction, the reaction times is 20-30 minute;
E. precipitate and separate: the waste water after flocculation reaction again enters settling tank and carries out mud-water separation, sedimentation time is 120-150 minute.
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| CN201210495560.XA CN103848513B (en) | 2012-11-28 | 2012-11-28 | A kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction |
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| CN201210495560.XA CN103848513B (en) | 2012-11-28 | 2012-11-28 | A kind of fluorine-containing wastewater treatment method based on Fenton oxidation reaction |
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| CN103848513A CN103848513A (en) | 2014-06-11 |
| CN103848513B true CN103848513B (en) | 2016-03-02 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105366849B (en) * | 2015-12-07 | 2018-01-16 | 太仓中化环保化工有限公司 | A kind of processing method of the waste water from fluorine fine chemistry industry process units |
| CN108083515A (en) * | 2018-02-06 | 2018-05-29 | 美尚生态景观股份有限公司 | A kind of gardens organic mat production process generates the processing system of waste water |
| CN110921898A (en) * | 2019-12-04 | 2020-03-27 | 山东潍坊润丰化工股份有限公司 | Wastewater treatment method for fluorine-containing aniline compound |
| CN111439865B (en) * | 2020-04-07 | 2022-02-25 | 中国科学院生态环境研究中心 | Defluorination method for coal gas wastewater |
| CN111732249A (en) * | 2020-07-13 | 2020-10-02 | 苏州博净源环境科技有限公司 | Pretreatment process of integrated Fenton equipment integrated system |
| CN115196797A (en) * | 2021-04-08 | 2022-10-18 | 湘潭大学 | Pretreatment method for acid-making washing wastewater of steel smelting plant |
| CN114291858A (en) * | 2021-12-31 | 2022-04-08 | 上海同济建设科技股份有限公司 | High-fluorine-content wastewater treatment system and method |
| CN117819696A (en) * | 2024-01-29 | 2024-04-05 | 东晟环保科技集团(安徽)股份有限公司 | Pretreatment method for strongly acidic fluorine-containing organic wastewater |
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| JPS59196796A (en) * | 1983-04-19 | 1984-11-08 | Mitsubishi Heavy Ind Ltd | Treatment of liquid waste |
| JPS6125689A (en) * | 1984-07-13 | 1986-02-04 | Hitachi Plant Eng & Constr Co Ltd | Purification treatment of waste water containing surfactant, oil, and fluorine |
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| CN102730871A (en) * | 2011-04-01 | 2012-10-17 | 深圳恒通源水处理科技有限公司 | Recycling process of fluorine-containing wastewater |
| CN202924851U (en) * | 2012-11-28 | 2013-05-08 | 苏州市环境保护有限公司 | Fenton oxidization reaction-based fluoride waste water treatment device |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59196796A (en) * | 1983-04-19 | 1984-11-08 | Mitsubishi Heavy Ind Ltd | Treatment of liquid waste |
| JPS6125689A (en) * | 1984-07-13 | 1986-02-04 | Hitachi Plant Eng & Constr Co Ltd | Purification treatment of waste water containing surfactant, oil, and fluorine |
| CN1311759A (en) * | 1998-07-17 | 2001-09-05 | 日本电气株式会社 | Method and apparatus for treating fluorine-contg. waste water |
| JP2007125481A (en) * | 2005-11-02 | 2007-05-24 | Japan Organo Co Ltd | Method and apparatus for chelating agent-containing water with fluorine and phosphorus |
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