CN103848513A - Fluorine-containing wastewater treatment method based on Fenton oxidation reaction, and apparatus thereof - Google Patents
Fluorine-containing wastewater treatment method based on Fenton oxidation reaction, and apparatus thereof Download PDFInfo
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- CN103848513A CN103848513A CN201210495560.XA CN201210495560A CN103848513A CN 103848513 A CN103848513 A CN 103848513A CN 201210495560 A CN201210495560 A CN 201210495560A CN 103848513 A CN103848513 A CN 103848513A
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Abstract
The invention belongs to the field of technical field of environmental protection, and particularly relates to a fluorine-containing wastewater treatment method based on a Fenton oxidation reaction, and an apparatus thereof. The apparatus comprises an adjustment tank, an oxidation tank, a coagulation tank, an agent addition reaction tank, a flocculation tank, a precipitation tank and a sludge concentration tank, wherein the adjustment tank, the oxidation tank, the coagulation tank, the agent addition reaction tank, the flocculation tank, the precipitation tank and the sludge concentration tank are sequentially connected through pipelines, and the sludge concentration tank is connected with a plate-and-frame type filter press. According to the present invention, the process is simple, and automated operation of the wastewater treatment facility is easily achieved; the Fenton advanced oxidation is adopted as the pretreatment process so as to improve the fluorine removing efficiency of the subsequent coagulation precipitation; and the fluorine removing rate is high.
Description
Technical field
The invention belongs to environmental technology field, relate in particular to a kind of fluorine-containing wastewater treatment method and device thereof based on Fenton oxidation reaction.
Background technology
When the development of modern industry, discharged a large amount of high-concentration fluorine-contained trade effluents, these waste water generally contain the fluorine that is fluorion (F-) form, are difficult points in wastewater processing technology.And a lot of enterprises there is no perfect treatment facility these waste water are processed, the fluorine in wastewater content of discharge exceedes discharging standards, fluorinion concentration has far exceeded 10mg/L, when seriously polluting the environment that the mankind depend on for existence, causes a lot of threats to the mankind's health.
Current, the treatment process of high-concentration fluorine-containing waste water has several both at home and abroad, and using more method is mainly chemical precipitation method, flocculent precipitation and absorption method.Chemical precipitation method is generally used for processing 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 tap water that the water yield is less, and processing costs is high comparatively speaking, and operation is more loaded down with trivial details.Certainly other certain methods each have their own use field and advantage.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of technique is simple, fluorine-containing wastewater treatment method and the device thereof based on Fenton oxidation reaction of the fluorine removing rate that improves follow-up coagulating sedimentation.
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
4adjusting 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, react 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 to carry out flocculation reaction in the water after coagulating treatment, 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 pipeline connects successively equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener, 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 and processes outlet.
A kind of fluorine-containing wastewater treatment method reacting based on Fenton oxidation of the present invention and the beneficial effect main manifestations of device thereof are: technical process is simple, is easy to realize the automatic operating of waste water disposal facility; Adopt Fenton advanced oxidation as pretreatment technology, improved 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, as a kind of fluorine-containing wastewater treatment method reacting based on Fenton oxidation of the present invention and the preferred forms of device thereof, it comprises the following steps:
A. oxidizing reaction: add H in fluoride waste
2sO
4adjusting 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, react 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 to carry out flocculation reaction in the water after coagulating treatment, 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 pipeline connects successively equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener, 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 and processes outlet.
The present embodiment is in the specific implementation:
(1) equalizing tank: because the waste water quality discharging in production process and the water yield have unstable, therefore equalizing tank is set waste water is carried out to homogeneous, equal amounts.
(2) oxidation pond: waste water promotes and enters the oxidation pond that is provided with aeration agitation through lift pump, regulates pH and adds H
2o
2waste liquid carries out oxidizing reaction, will in waste water, disturb the material oxidation removal in addition of fluorion coagulating sedimentation.Oxidation time is about 8h.
(3) coagulation basin: the water outlet after peroxidation, from flowing into coagulation basin, adds CaO to regulate pH to 6, then adds NaOH to regulate pH to 11, reaction 30min.In coagulation basin, adopt aeration agitation, 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.Coagulation, flocculation basin are established aeration agitation in all.
(6) settling tank: flocculation basin water outlet is carried out mud-water separation from flowing into settling tank, and the fluorochemical that being flocculated in waste water separated out 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 possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, make a variety of changes.
Do not depart from the spirit and scope of the present invention and can make many other changes 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 (5)
1. the fluorine-containing wastewater treatment method based on Fenton oxidation reaction, is characterized in that, comprises the following steps:
A. oxidizing reaction: add H in fluoride waste
2sO
4adjusting 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, react 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 to carry out flocculation reaction in the water after coagulating treatment, 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.
2. the fluorine-containing wastewater treatment method device based on Fenton oxidation reaction, it is characterized in that, it comprises pipeline connects successively equalizing tank, oxidation pond, coagulation basin, dosing reaction tank, flocculation basin, settling tank and sludge thickener, and described sludge thickener is connected with plate-and-frame filter press.
3. a kind of fluorine-containing wastewater treatment method device based on Fenton oxidation reaction according to claim 2, is characterized in that, described settling tank also pipeline is connected with clean water basin.
4. a kind of fluorine-containing waste water processing apparatus based on Fenton oxidation reaction according to claim 3, is characterized in that, described clean water basin are provided with clear water output.
5. a kind of fluorine-containing waste water processing apparatus based on Fenton oxidation reaction according to claim 1, is characterized in that, described plate-and-frame filter press is provided with dewatered sludge and processes outlet.
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| CN103848513B CN103848513B (en) | 2016-03-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366849A (en) * | 2015-12-07 | 2016-03-02 | 太仓中化环保化工有限公司 | Treatment method of wastewater from fluorine fine chemical production equipment |
| 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 |
| CN111439865A (en) * | 2020-04-07 | 2020-07-24 | 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 |
| 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 |
| CN115196797A (en) * | 2021-04-08 | 2022-10-18 | 湘潭大学 | Pretreatment method for acid-making washing wastewater of steel smelting plant |
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2012
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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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366849A (en) * | 2015-12-07 | 2016-03-02 | 太仓中化环保化工有限公司 | Treatment method of wastewater from fluorine fine chemical production equipment |
| 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 |
| CN111439865A (en) * | 2020-04-07 | 2020-07-24 | 中国科学院生态环境研究中心 | Defluorination method for coal gas wastewater |
| 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 |
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| CN103848513B (en) | 2016-03-02 |
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