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SBR/GAC-SBR공정을 이용한 2,4-DCP 함유 페놀폐수 처리특성
윤조희 ( Cho Hee Yoon ),정기홍 ( Gi Hong Jung ),김승현 ( Seung Hyun Kim ),하성룡 ( Sung Ryong Ha ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5
This study was conducted to investigate treatability for toxic wastewater in biological treatment process using activated sludge. The sequencing batch reactor(SBR) processes with/without granular activated carbon(GAC) addition were employed for the purpose. And the wastewater was used phenolic compounds such as phenol and 2,4-dichlorophenol (2,4-DCP) which were recalcitrant and toxic chemicals. The variation of influent concentration was selected as operating parameters. The results obtained from this study are as follow; In adsorption test on GAC. K values of phenol and 2,4-DCP were 40.9, 146.4 and 1/n were 0.25 and 0.15 respectively. Stability of process was shown more in GAC-SBR than in SBR but microbial acclimation period for target materials took similarly about 85 days in both processes. Removal efficiencies for two compounds were about 100% under all operating condition after acclimation and MLSS concentration was gradually increasing due to granulation phenomena. In phenol and 2,4-DCP behavior for a cycle period, most of these compounds were simultaneously removed for the initial fill time under steady state. The effluent pH drop may be caused by release of hydrogen(H^+) and chloride(Cl^-) ions which resulted from biological decomposition of 2,4-DCP.
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이중 산화구 시스템에서 HRT에 따른 유기물 및 영양염류의 처리성 평가
윤조희,김승현,이상훈,정기홍 경남대학교 환경문제연구소 1999 환경연구 Vol.22 No.-
This study was conducted to estimate treatability of organics and nutrients at new developed double oxidation ditch system when the ratio of anoxic/oxic basin volume was 1. An internal recycle pump did not need because of using with port and baffle in this system. The results obtained from this study were as follows. The removal efficiency for TOC was over 93%, and the removal rate was 1215.3 g/㎥/day when the HRT was over 8hr. The removal efficiency for TIN was over 85%, and the maximum removal rate was 110.6 g/㎥/day when the HRT was over 16hr. The removal efficiency for PO₄^(3-)-P was 83%, and the maximum removal rate was 25.4 g/㎥/day when the HRT was 16hr.
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