고농도 페놀 폐수의 습식산화와 호기성 생물학적 통합처리
Integrated Wet Oxidation and Aerobic Biological Treatment of the Wastewater Containing High Concentration of Phenol
최호준 ( ) - 건국대학교 화학공학과
이승호 ( Lee Seung-Ho ) - 건국대학교 화학공학과
유용호 ( ) - 삼성엔지니어링 기술연구소
윤왕래 ( ) - 한국에너지기술연구소 에너지환경연구부
서일순 ( ) - 건국대학교 화학공학과
Abstract
고농도 페놀폐수 전처리 습식산화공정의 반응온도, 초기 pH 및 균일촉매 () 등이 후처리 호기성 생물학적 공정에 미치는 영향을 조사하였다. 습식산화에서의 높은 반응온도와 산성 초기조건이 후처리 생물학적 산화공정에서 높은 산화속도와 최종 COD 제거율을 유발하였다. 습식산화에서 균일촉매를 사용하면 전처리 습식산화반응은 낮은 반응온도에서도 높은 COD 제거속도를 보였으나, 후처리 생물학적 산화공정에서는 낮은 최종 COD 제거율을 나타내었다.
The treatment of a model wastewater containing high concentration, 10 , of phenol in an integrated wet oxidation-aerobic biological treatment was investigated. Partial wet oxidation under mild operating conditions was capable of converting the original phenol to biodegradable organic acids such as maleic acid, formic acid and acetic acid, the solution of which was subjected to the subsequent aerobic biological treatment. The wet oxidation was carried out at 150 and 200 and the initial pH of 1 to 12. The high temperature of 200 and the acidic initial condition in the wet oxidation led to effluents of which biodegradability was higher in the subsequent biological oxidation process, as assessed by chemical oxygen demand (COD) removal. Homogeneous catalyst of was also used for increasing the oxidation rate in the wet oxidation at 150 and initial pH of 3.0. However, the pretreatment with the catalytic wet oxidation resulted in effluents which were less biodegradable in the aerobic biological process compared to those out of the non-catalytic wet oxidation at the same operating conditions.
키워드
Phenol wastewater; wet oxidation; biological oxidation; integrated treatment; biodegradability
KMID :
0380020070220040244
DOI :
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