UV-catalytic treatment of spent caustic from ethene plant with hydrogen peroxide and ozone oxidation

Abstract： The performance of UV/H2O2, UV/O3 and UV/H2O2/O3 oxidation systems for treating spent caustic froman ethylene plant was investigated. In UV/H2O2 system, with the increase of H2O2 dosage, removal efficiencies ofCOD and the ratio of biochemical oxygen demand(BOD) to chemical oxygen demand(COD) of the effluent wereincreased and a better performance was obtained than the H2O2 system alone. In UV/H2O2 system, removalefficiency of COD reach 68% under the optimum condition, and BOD/COD ratio was significantly increased from0.22 to 0.52. In UV/O3 system, with the increase of O3 dosage, removal efficiency of COD and BOD/COD ratiowere increased, and a better performance was obtained than the O3 system alone. Under the optimum condition,removal efficiency of COD was 54%, and BOD/COD ratio was significantly increased from 0.22 to 0.48. In UV/H2O2/O3 system, COD removal efficiency was found to be 22.0% higher than UV/O3 system. 作 者： YU Zheng-zhe    SUN De-zhi    LI Chang-hai    SHI Peng-fei    DUAN Xiao-dong    SUN Guo-rong    LIU Jun-xin   作者單位： YU Zheng-zhe(Research Center for Ecg-Environmental Sciences, CAS, Beijing 100085, China;Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

SUN De-zhi,LI Chang-hai,SHI Peng-fei,DUAN Xiao-dong,SUN Guo-rong(Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

LIU Jun-xin(Research Center for Ecg-Environmental Sciences, CAS, Beijing 100085, China) 

期 刊： 環境科學學報(英文版)  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(2)  分類號： X701  Keywords： spent caustic    photochemical oxidation    UV/O3 system    UV/H2O2 system    UV/H2O2/O3 system   

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