Treatment of spent caustic by three

Treatment of spent caustic by three kinds of photocatalytic oxidation processes

The investigation of the performance of UV/H2 O2 , UV/O3 and UV/H2 O2/O3 oxidation systems treating spent caustic from an ethylene plant shows that in UV/H2 O2 system, with the increase of H2 O2 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 obtained than the H2O2system alone. In UV/H2O2 system, removal efficiency of COD reached 68% under the optimum condition, and BOD/COD ratio was significantly increased from 0. 22 to 0. 52. In UV/O3 system, with the increase of O3dosage, removal efficiency of COD and BOD/COD ratio were 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： 余政哲 孙德智 史鹏飞 段晓东 李长海 杜龙弟   作者单位： Dept. of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001 ,China  刊 名： 哈尔滨工业大学学报(英文版)  EI 英文刊名： JOURNAL OF HARBIN INSTITUTE OF TECHNOLOGY(NEW SERIES)  年，卷(期)： 2003 10(4)  分类号： X703  关键词： spent caustic   photochemical oxidation   UV/O3 system   UV/H2 O2 system   UV/H2 O2/O3 system  

【Treatment of spent caustic by three 】相关文章：

Three guys bet05-04

地道美语:red carpet treatment 贵宾式待遇05-04

Goldilocks and the Three Bears(part2)05-04

Goldilocks and the Three Bears(part1)05-04

毕业生求职（13） Three05-04

Module Three（教案）陶老师评04-25

四上Unit Three My Friends教案04-25

Unit Three What’s your favourite food?（教案）04-25

Three word expressions生活常用的三字短语05-04

六年级英语教案Unit three04-25