KR970069891A - Treatment of Fluorine-Containing Wastewater - Google Patents
Treatment of Fluorine-Containing Wastewater Download PDFInfo
- Publication number
- KR970069891A KR970069891A KR1019960013643A KR19960013643A KR970069891A KR 970069891 A KR970069891 A KR 970069891A KR 1019960013643 A KR1019960013643 A KR 1019960013643A KR 19960013643 A KR19960013643 A KR 19960013643A KR 970069891 A KR970069891 A KR 970069891A
- Authority
- KR
- South Korea
- Prior art keywords
- fluorine
- pac
- wastewater
- coagulation
- calcium hydroxide
- Prior art date
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- Removal Of Specific Substances (AREA)
Abstract
본 발명은 불소를 함유한 폐수의 처리방법에 관한 것으로서, 불소함유 폐수에 PAC(Poly Aluminium Chorosulfate)를 반응시켜 난용성 콜로이드 화합물인 CaF2를 생성시키고 이를 응집시키기 위하여 pH를 4.5 이상으로 유지시키는 단계와, PAC의 응집작용을 가속화하기 위하여 수산화나트륨으로 산도를 pHP6.0~8.0으로 조정하는 단계 및, 유기 응집제인 PAA(Poly Acryl Amide)를 4~6㎎/ℓ를 첨가하여 최종적으로 불소이온을 응집제거하는 단계로 이루어져 비교적 저농도의 불소함유 폐수에 대하여 종래의 방법에 비하여 적은 약품주입량으로도 만족한 불소이온의 제거효과를 거둘 수 있고, 종래의 수산화칼슘 사용해서 필요로 하는 계속적인 교반작업이 불필요하다고 하는 장점 뿐만 아니라 수산화칼슘 주입시 펌프의 마모 및 관로의 막힘 현상등 약품 주입 공정의 문제점을 해결할 수 있는 불소함유 폐수의 처리방법이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of treating wastewater containing fluorine, which comprises reacting fluorinated wastewater with PAC (Poly Aluminum Chlorosulfate) to produce a poorly soluble colloidal compound, CaF 2 , Adjusting the acidity to pHP6.0-8.0 with sodium hydroxide to accelerate the coagulation action of PAC, and adding 4-6 mg / l of polyacrylamide (PAA), an organic coagulant, And removing coagulation. Thus, fluorine ions can be satisfactorily removed even at a relatively small injection amount of the fluorine-containing wastewater in comparison with the conventional method, and the conventional stirring operation required by using the conventional calcium hydroxide is unnecessary As well as the problems of the chemical injection process such as wear of the pump and clogging of the pipeline when calcium hydroxide is injected. A method of treating fluorine-containing waste water that can be.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013643A KR970069891A (en) | 1996-04-30 | 1996-04-30 | Treatment of Fluorine-Containing Wastewater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960013643A KR970069891A (en) | 1996-04-30 | 1996-04-30 | Treatment of Fluorine-Containing Wastewater |
Publications (1)
Publication Number | Publication Date |
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KR970069891A true KR970069891A (en) | 1997-11-07 |
Family
ID=66217385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960013643A KR970069891A (en) | 1996-04-30 | 1996-04-30 | Treatment of Fluorine-Containing Wastewater |
Country Status (1)
Country | Link |
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KR (1) | KR970069891A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100756838B1 (en) * | 2001-08-20 | 2007-09-07 | 동부일렉트로닉스 주식회사 | Waste-water treatment method |
KR100778754B1 (en) * | 2006-10-18 | 2007-11-29 | 주식회사 포스코 | Method for chemical treatment of wastewater comprising cyanide compounds |
-
1996
- 1996-04-30 KR KR1019960013643A patent/KR970069891A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100756838B1 (en) * | 2001-08-20 | 2007-09-07 | 동부일렉트로닉스 주식회사 | Waste-water treatment method |
KR100778754B1 (en) * | 2006-10-18 | 2007-11-29 | 주식회사 포스코 | Method for chemical treatment of wastewater comprising cyanide compounds |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |