【摘要】 研究了UV/H2 O2 ,UV/O3 和UV/H2 O2 /O3 三种高级氧化体系处理乙烯装置所排放废碱液的特点。对于UV/H2 O2 体系 ,随着H2 O2 剂量的增加 ,COD的去除率以及处理液的可生化性 (BOD∶COD值 )都随之增大 ,其性能也好于单独的H2 O2 体系 ,该体系在最佳条件下 ,COD的去除率达到 6 8% ,BOD/COD值从 0 .2 2增大到 0 .5 2 ;对于UV/O3 体系 ,随着O3 剂量的增加 ,COD的去除率及处理液的可生化性 (BOD∶COD值 )也都随之增大 ,其性能也好于单独的O3 体系。该体系在最佳条件下 ,COD的去除率达到 5 4 % ,可生化性 (BOD/COD值 )从 0 .2 2增大到 0 .4 8;对于UV/H2 O2 /O3 体系 ,其COD去除率比UV/O3 体系高出 2 2 .0 %。更多还原

【Abstract】 The performance of UV/H 2O 2 UV/O 3 and UV/H 2O 2/O 3 oxidation systems for treating spent caustic from an ethylene plant was investigated. In UV/H 2O 2 system,with the increase of H 2O 2 dosage, removal efficiencies of COD and the ratio of biochemical oxygen demand(BOD) to chemical oxygen demand(COD) of the effluent were increased and a better performance was obtainced than the H 2O 2 system alone. In UV/H 2O 2system, removal efficiency of COD reach 68% under the optimum condition,and BOD/COD ratio was significantly increased from 0.22 to 0.52. In UV/O 3 system, with the increase of O 3 dosage,removal efficiency of COD and BOD/COD ratio were increased, and a better performance was obtained than the O 3 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/H 2O 2/O 3 system, COD removal efficiency was found to be 22.0% higher than UV/O 3 system.更多还原