KR970069891A - Treatment of Fluorine-Containing Wastewater - Google Patents

Treatment of Fluorine-Containing Wastewater Download PDF

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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
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KR
South Korea
Prior art keywords
fluorine
pac
wastewater
coagulation
calcium hydroxide
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Application number
KR1019960013643A
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Korean (ko)
Inventor
양춘길
Original Assignee
김종진
포항종합제철 주식회사
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Application filed by 김종진, 포항종합제철 주식회사 filed Critical 김종진
Priority to KR1019960013643A priority Critical patent/KR970069891A/en
Publication of KR970069891A publication Critical patent/KR970069891A/en

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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

불소함유 폐수의 처리방법Treatment of Fluorine-Containing Wastewater

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

Claims (1)

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 pH6.0~8.0으로 조정하는 단계 및, 유기 응집제인 PAA(Poly Acryl Amide)를 4~6㎎/ℓ를 첨가하여 최종적으로 불소이온을 응집제거하는 단계로 이루어짐을 특징으로 하는 불소함유 폐수의 처리방법.The present invention relates to a method for producing PAC, which comprises reacting fluorine-containing wastewater with PAC (Poly Aluminum Chlorosulfate) to produce CaF 2 , a poorly soluble colloid compound, and maintaining the pH at 4.5 or higher for coagulation thereof; adjusting the pH to 6.0 to 8.0, and adding 4 to 6 mg / l of polyacrylamide (PAA) as an organic coagulant to collectively remove fluorine ions. Way. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960013643A 1996-04-30 1996-04-30 Treatment of Fluorine-Containing Wastewater KR970069891A (en)

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
KR970069891A true KR970069891A (en) 1997-11-07

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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

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KR (1) KR970069891A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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