CN107162253A - A kind of processing method of fluoride waste - Google Patents
A kind of processing method of fluoride waste Download PDFInfo
- Publication number
- CN107162253A CN107162253A CN201710307669.9A CN201710307669A CN107162253A CN 107162253 A CN107162253 A CN 107162253A CN 201710307669 A CN201710307669 A CN 201710307669A CN 107162253 A CN107162253 A CN 107162253A
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- Prior art keywords
- fluoride waste
- processing method
- value
- minutes
- hybrid reaction
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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
-
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- 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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- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of processing method of fluoride waste, comprise the following steps：（100）Sodium hydroxide solution or hydrochloric acid solution are added in pending fluoride waste, to adjust the pH value of fluoride waste；（200）Hybrid reaction I：According to [Ca2+]/[F‑]=1.5 ~ 2, add calcium chloride solution, moderate-speed mixer 27 32 minutes in the fluoride waste for regulate pH value；（300）Hybrid reaction II：Regulation pH value adds coagulant, moderate-speed mixer 8 12 minutes to 7.5 again；（400）Hybrid reaction III：Flocculant is added, is mixed slowly 8 12 minutes；（500）Precipitation water outlet after 1 hour.By the above-mentioned means, the present invention can make the mass concentration of the remaining fluorine ion in waste water be reduced to below 10mg/l, preferable effect of settling is obtained, environmental emission standard is reached.
Description
Technical field
The present invention relates to technical field of waste water processing, more particularly to a kind of processing method of fluoride waste.
Background technology
At present, the research carried out for fluoride waste has much both at home and abroad, and main methods have：Chemical precipitation method,
Flocculation sediment, absorption method, crystal seed addition, ion exchange, counter-infiltration, activated carbon fluorine removal, electrodialysis and electrocoagulation etc..Fluorine-containing processing
Method is numerous, but it is unstable all to there is effluent quality mostly, and medicament usage amount is excessive, or there are secondary pollution problems so that
These defluorination methods have certain limitation.For the above method, ion exchange is high to the standard for entering water water quality requirement；Activity
The processing cost of charcoal fluorine removal is high；The complex process of counter-infiltration and electrocoagulation, power consumption are big, and cost is high.Current fluoride waste
Industrial treatment target be only realize standard water discharge discharge, chemistry is mainly by commonly used processing method based on this
Precipitation, flocculation sediment and absorption method.Chemical precipitation method, can handle high-concentration fluorine-containing waste water, waste water ultimate density is dropped to 20-
30mg/l, and flocculent precipitation, can carry out advanced treating so that the waste water after processing can reach to the fluoride waste of low concentration
Mark discharge.
The content of the invention
The present invention solves the technical problem of：There is provided a kind of processing of fluoride waste in view of the shortcomings of the prior art
Method, can make the mass concentration of the remaining fluorine ion in waste water be reduced to below 10mg/l, obtain preferable effect of settling, reach
To environmental emission standard.
In order to solve the above technical problems, one aspect of the present invention is：A kind of processing of fluoride waste is provided
Method, comprises the following steps：
（100）Sodium hydroxide solution or hydrochloric acid solution are added in pending fluoride waste, to adjust the pH value of fluoride waste；
（200）Hybrid reaction I：According to [Ca2+]/[F-]=1.5 ~ 2, calcium chloride is added in the fluoride waste for regulate pH value molten
Liquid, moderate-speed mixer 27-32 minutes；
（300）Hybrid reaction II：Regulation pH value adds coagulant, moderate-speed mixer 8-12 minutes to 7.5 again；
（400）Hybrid reaction III：Flocculant is added, is mixed slowly 8-12 minutes；
（500）Precipitation water outlet after 1 hour.
In a preferred embodiment of the present invention, the step（100）The pH value of middle regulation fluoride waste is 6-8.
In a preferred embodiment of the present invention, the step（200）In calcium chloride solution concentration be 30%-35%.
In a preferred embodiment of the present invention, the concentration of the calcium chloride solution is 31.35%.
In a preferred embodiment of the present invention, the step（300）In coagulant be polyaluminium that concentration is 5%
Aluminium.
In a preferred embodiment of the present invention, the step（400）In flocculant be polyacrylamide that concentration is 1%
Amine.
In a preferred embodiment of the present invention, the speed during moderate-speed mixer is 60-65r/min.
In a preferred embodiment of the present invention, speed when mixing slowly is 20-25r/min.
The beneficial effects of the invention are as follows：Chemical precipitation method and flocculent precipitation are used cooperatively, first using chemical precipitation method
Fluoride waste is pre-processed, the pH value of fluoride waste is adjusted by sodium hydroxide solution or hydrochloric acid solution, it is molten with calcium chloride
Liquid is precipitating reagent, then using PAC as coagulant, then the processing of fluoride waste ultimate depth is made in waste water by flocculant PAM
The mass concentration of remaining fluorine ion is reduced to below 10mg/l, obtains preferable effect of settling, reaches environmental emission standard.
Brief description of the drawings
Fig. 1 is a kind of process chart of the preferred embodiment of processing method one of fluoride waste of the invention.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
The present invention is specifically included：
Embodiment one
A kind of processing method of fluoride waste, water sample pH=8.86 in workshop, fluorinion concentration CF -=3533.36mg/l, processing
When, referring to Fig. 1, comprising the following steps：
（100）Sodium hydroxide solution or hydrochloric acid solution are added in fluoride waste, the pH value of fluoride waste is adjusted to 6；
（200）Hybrid reaction I：According to [Ca2+]/[F-]=2, it is 31.35% that concentration is added in the fluoride waste for regulate pH value
Calcium chloride solution, stirred 30 minutes with 60r/min mixing speed；
（300）Hybrid reaction II：The pH value of regulation waste water adds the aluminium polychloride that concentration is 5% to 7.5 again（PAC）, with
60r/min mixing speed is stirred 10 minutes；
（400）Hybrid reaction III：Add the polyacrylamide that concentration is 1%（PAM）, 10 points are stirred with 20r/min mixing speed
Clock；
（500）Precipitation water outlet after 1 hour.
Remaining fluorinion concentration after processing drops to below 10mg/l.
Embodiment two
A kind of processing method of fluoride waste, water sample pH=2.5 in workshop, fluorinion concentration CF -=12902mg/l, due to waste water
Excessive concentration, excessive concentrations treatment effect extreme difference needs first to be diluted when handling it, contains this in the present embodiment
5 times of fluorine wastewater dilution, i.e. concentration are CF -=2580mg/l.During processing, referring to Fig. 1, comprising the following steps：
（100）Sodium hydroxide solution or hydrochloric acid solution are added in fluoride waste, the pH value of fluoride waste is adjusted to 8；
（200）Hybrid reaction I：According to [Ca2+]/[F-]=2, it is 31.35% that concentration is added in the fluoride waste for regulate pH value
Calcium chloride solution, stirred 30 minutes with 60r/min mixing speed；
（300）Hybrid reaction II：The pH value of regulation waste water adds the aluminium polychloride that concentration is 5% to 7.5 again（PAC）, with
60r/min mixing speed is stirred 10 minutes；
（400）Hybrid reaction III：Add the polyacrylamide that concentration is 1%（PAM）, 10 points are stirred with 20r/min mixing speed
Clock；
（500）Precipitation water outlet after 1 hour.
Remaining fluorinion concentration after processing drops to below 10mg/l.
Present invention is disclosed a kind of processing method of fluoride waste, chemical precipitation method and flocculent precipitation are used cooperatively,
First fluoride waste is pre-processed using chemical precipitation method, fluoride waste is adjusted by sodium hydroxide solution or hydrochloric acid solution
PH value, using calcium chloride solution as precipitating reagent, then using PAC as coagulant, then by flocculant PAM to fluoride waste ultimate depth
Processing, makes the mass concentration of the remaining fluorine ion in waste water be reduced to below 10mg/l, obtains preferable effect of settling, reach ring
Protect discharge standard.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of processing method of fluoride waste, it is characterised in that comprise the following steps：
（100）Sodium hydroxide solution or hydrochloric acid solution are added in pending fluoride waste, to adjust the pH value of fluoride waste；
（200）Hybrid reaction I：According to [Ca2+]/[F-]=1.5 ~ 2, add calcium chloride molten in the fluoride waste for regulate pH value
Liquid, moderate-speed mixer 27-32 minutes；
（300）Hybrid reaction II：Regulation pH value adds coagulant, moderate-speed mixer 8-12 minutes to 7.5 again；
（400）Hybrid reaction III：Flocculant is added, is mixed slowly 8-12 minutes；
（500）Precipitation water outlet after 1 hour.
2. a kind of processing method of fluoride waste according to claim 1, it is characterised in that the step（100）It is middle to adjust
The pH value for saving fluoride waste is 6-8.
3. a kind of processing method of fluoride waste according to claim 1, it is characterised in that the step（200）In
The concentration of calcium chloride solution is 30%-35%.
4. a kind of processing method of fluoride waste according to claim 3, it is characterised in that the calcium chloride solution it is dense
Spend for 31.35%.
5. a kind of processing method of fluoride waste according to claim 1, it is characterised in that the step（300）In
Coagulant is the aluminium polychloride that concentration is 5%.
6. a kind of processing method of fluoride waste according to claim 1, it is characterised in that the step（400）In
Flocculant is the polyacrylamide that concentration is 1%.
7. a kind of processing method of fluoride waste according to claim 1, it is characterised in that the speed during moderate-speed mixer
Spend for 60-65r/min.
8. a kind of processing method of fluoride waste according to claim 1, it is characterised in that speed when mixing slowly
Spend for 20-25r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307669.9A CN107162253A (en) | 2017-05-04 | 2017-05-04 | A kind of processing method of fluoride waste |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307669.9A CN107162253A (en) | 2017-05-04 | 2017-05-04 | A kind of processing method of fluoride waste |
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| CN107162253A true CN107162253A (en) | 2017-09-15 |
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| CN201710307669.9A Pending CN107162253A (en) | 2017-05-04 | 2017-05-04 | A kind of processing method of fluoride waste |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698092A (en) * | 2017-11-25 | 2018-02-16 | 昆明有色冶金设计研究院股份公司 | A kind of packaged type fluorine-containing wastewater treatment method and device |
| CN108117195A (en) * | 2017-12-29 | 2018-06-05 | 韶关市雅鲁环保实业有限公司 | The waste water fluoride ion removing agent of polymetallic ore mountain and processing method |
| CN108862703A (en) * | 2018-06-21 | 2018-11-23 | 湖南双晟科技信息咨询有限公司 | A kind of deep treatment method of fluoride waste |
| CN109626648A (en) * | 2019-01-08 | 2019-04-16 | 许伟伟 | A method of electrolytic aluminium sewage content of fluoride is reliably effectively reduced |
| CN110066047A (en) * | 2019-04-26 | 2019-07-30 | 广东益诺欧环保股份有限公司 | A kind of method and system handling high fluoride waste water |
| CN110407368A (en) * | 2019-08-27 | 2019-11-05 | 山东共享环境管理咨询有限公司 | A kind of low concentration fluoride waste depth fluorine removal treatment process and remove fluorine treatment system |
| CN110963598A (en) * | 2018-09-30 | 2020-04-07 | 中核四0四有限公司 | Treatment method for uranium conversion alkaline fluorine-containing wastewater |
| CN111099706A (en) * | 2019-12-12 | 2020-05-05 | 贵州振华电子信息产业技术研究有限公司 | Method for recycling tantalum in acid-containing waste liquid |
| CN112811646A (en) * | 2020-12-24 | 2021-05-18 | 山东华氟化工有限责任公司 | Method for treating wastewater with high fluorine ions, high COD (chemical oxygen demand) and high chroma |
| CN113233559A (en) * | 2021-04-26 | 2021-08-10 | 中国科学院过程工程研究所 | Treatment method and treatment device for removing fluorine from rare earth smelting wastewater |
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| CN203095757U (en) * | 2013-02-26 | 2013-07-31 | 宏大中源太阳能股份有限公司 | Sewage treatment system for solar cell production |
| EP2792645A1 (en) * | 2013-04-18 | 2014-10-22 | Gruppo Zilio S.P.A. | Process for removing fluorides from water |
| CN104512972A (en) * | 2013-09-27 | 2015-04-15 | 中国石油化工股份有限公司 | A treating method of fluorine-containing waste water |
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Patent Citations (5)
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| CN102050531A (en) * | 2009-10-30 | 2011-05-11 | 中芯国际集成电路制造(上海)有限公司 | Fluorine-containing wastewater treatment method |
| CN102276034A (en) * | 2011-07-19 | 2011-12-14 | 上海电力学院 | Process method for removing fluorides in high concentrations of fluoride-containing wastewater from thermal power plant |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698092A (en) * | 2017-11-25 | 2018-02-16 | 昆明有色冶金设计研究院股份公司 | A kind of packaged type fluorine-containing wastewater treatment method and device |
| CN108117195A (en) * | 2017-12-29 | 2018-06-05 | 韶关市雅鲁环保实业有限公司 | The waste water fluoride ion removing agent of polymetallic ore mountain and processing method |
| CN108862703A (en) * | 2018-06-21 | 2018-11-23 | 湖南双晟科技信息咨询有限公司 | A kind of deep treatment method of fluoride waste |
| CN110963598A (en) * | 2018-09-30 | 2020-04-07 | 中核四0四有限公司 | Treatment method for uranium conversion alkaline fluorine-containing wastewater |
| CN109626648A (en) * | 2019-01-08 | 2019-04-16 | 许伟伟 | A method of electrolytic aluminium sewage content of fluoride is reliably effectively reduced |
| CN110066047A (en) * | 2019-04-26 | 2019-07-30 | 广东益诺欧环保股份有限公司 | A kind of method and system handling high fluoride waste water |
| CN110407368A (en) * | 2019-08-27 | 2019-11-05 | 山东共享环境管理咨询有限公司 | A kind of low concentration fluoride waste depth fluorine removal treatment process and remove fluorine treatment system |
| CN111099706A (en) * | 2019-12-12 | 2020-05-05 | 贵州振华电子信息产业技术研究有限公司 | Method for recycling tantalum in acid-containing waste liquid |
| CN112811646A (en) * | 2020-12-24 | 2021-05-18 | 山东华氟化工有限责任公司 | Method for treating wastewater with high fluorine ions, high COD (chemical oxygen demand) and high chroma |
| CN113233559A (en) * | 2021-04-26 | 2021-08-10 | 中国科学院过程工程研究所 | Treatment method and treatment device for removing fluorine from rare earth smelting wastewater |
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Application publication date: 20170915 |