석유화학 폐수의 생물학적 처리시간 단축을 위한 오존 산화의 적용

The efficacy of integrated ozone oxidation-biodegradation treatment was examined in the treatment of petrochemical wastewater with a special focus on the overall treatment time. When raw wastewater with chemical oxygen demand(COD) of 70-80 mg/L was oxidized by ozone, approximately 20% of initial COD...

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Bibliographic Details
Published in:	Daehan hwan'gyeong gonghag hoeji Vol. 28; no. 5; pp. 573 - 576
Main Authors:	홍은식(Eun Sik Hong), 김현석(Hyun Suk Kim), 이상희(Sang Hee Lee), 정진석(Jin Suk Chung), 신은우(Eun Woo Shin), 류근갑(Keun Garp Ryu), 유익근(Ik Keun Yoo)
Format:	Journal Article
Language:	Korean
Published:	대한환경공학회 2006
Subjects:	환경공학 Biological Treatment Petrochemical Wastewater Ozone
Online Access:	Get full text
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Summary:	The efficacy of integrated ozone oxidation-biodegradation treatment was examined in the treatment of petrochemical wastewater with a special focus on the overall treatment time. When raw wastewater with chemical oxygen demand(COD) of 70-80 mg/L was oxidized by ozone, approximately 20% of initial COD was removed in less than 1.5 min at a dosing rate of 400 mg $O_3/L{\cdot}h $. No further decrease in COD was observed for the extended ozone treatment up to 30 min. Biological treatment alone showed a rapid reduction of COD to 40-50 mg/L, subsequently resulting in the decreased rate of COD removal. Pre-treatment by ozone before biological treatment did not significantly affect the specific rate of COD removal in a biological treatment. When ozone oxidation followed biological treatment, the extent of COD removal by ozone oxidation was greater compared to that of biologically-treated wastewater for a shorter time. Taken together, it was decided that the biological treatment time could be reduced if the treatment processes of concern will be properly arranged.
Bibliography:	KISTI1.1003/JNL.JAKO200609905732359 G704-000098.2006.28.5.007
ISSN:	1225-5025 2383-7810