光-电耦合催化处理海上平台生活污水技术研究

Research on the technology of photoelectric coupled catalysis for treating domestic sewage on the offshore oil drilling platform

为使海上平台生活污水处理装置出水达到IMO.MEPC 227(64)规定的排放标准,考察了电催化氧化和光-电耦合催化氧化工艺的处理效果,并分析了运行成本。结果表明:光-电耦合工艺最佳条件为电流密度600 A/m^2,海水添加比例50%,电解时间1.5 h,紫外光辐照强度50μW/cm^2。光-电耦合催化氧化工艺的COD降解效果、工艺条件和运行成本均优于电催化氧化工艺。

In order to make the effluent from the domestic sewage treatment system on the offshore platform achieve the discharge standard,specified in IMO.MEPC 227(64),the treatment effects of electrocatalytic oxidation(ECO)and photoelectric coupled catalytic oxidation(PECO)processes have been investigated,and the running costs analyzed.The results show that the optimal conditions of photoelectric coupled process are given as follows:current density is 600 A/m^2,seawater addition percentage 50%,electrolysis time 1.5 h,and ultraviolet radiation intensity 50μW/cm^2.The COD degradation effect,technological conditions and operating costs of PECO are all better than those of ECO.