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首页> 外文期刊>Journal of Harbin Institute of Technology >Treatment of spent caustic by three kinds of photocatalytic oxidation processes
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Treatment of spent caustic by three kinds of photocatalytic oxidation processes

机译：三种光催化氧化工艺处理废碱

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摘要

The investigation of the performance of UV/H_2O_2, UV/O_3 and UV/H_2O_2/O_3 oxidation systems treating spent caustic from an ethylene plant shows that 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 obtained than the H_2O_2 system alone. In UV/H_2O_2 system, removal efficiency of COD reached 68 percent 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 percent, 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 percent higher than UV/O_3 system.
机译：对UV / H_2O_2，UV / O_3和UV / H_2O_2 / O_3氧化系统处理乙烯厂废碱的性能的研究表明，在UV / H_2O_2系统中，随着H_2O_2剂量的增加，COD去除效率和比例的增加。与单独的H_2O_2系统相比，增加了废水中生化需氧量（BOD）对化学需氧量（COD）的影响，并获得了更好的性能。在UV / H_2O_2系统中，最佳条件下COD的去除率达到68％，BOD / COD比从0.22显着提高到0.52。在UV / O_3系统中，随着O_3剂量的增加，COD的去除效率和BOD / COD的比值增加，并且比单独使用O_3系统获得更好的性能。在最佳条件下，COD的去除率为54％，BOD / COD比从0.22显着提高到0.48。在UV / H_2O_2 / O_3系统中，发现COD去除效率比UV / O_3系统高22.0％。

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