摘要：

采用电絮凝-电解耦合技术处理船舶生活污水，研究了电絮凝过程中电流密度、电絮凝时间、污水盐度、极板间距、污水初始pH等因素对船舶生活污水COD去除率的影响；进一步采用自制Ti/SnO₂-Sb₂O₃/β-PbO₂-La电极深度电解处理电絮凝后的污水，并对电解过程中的电流密度、电解时间等进行考察。结果表明：在最佳电絮凝条件下，COD去除率可达到64%；在随后的电解深度处理过程中，当电流密度为0.06 A/cm²、电解时间为180 min时，COD总去除率为93%。

关键词: 电絮凝, 电解, 船舶生活污水

Abstract:

Ship domestic sewage has been treated by electrocoagulation-electrolysis coupling technique. The influences of the factors,such as current density,electrocoagulation time,salinity of the sewage,polar plate distance, initial pH,etc. in the process of electrocoagulation on the removing rate of ship domestic sewage are studied. Then the self-made Ti/SnO₂-Sb₂O₃ /β-PbO₂-La anode has been used for the advanced electrolytic treatment of the sewage that has been electrocoagulated. Furthermore,the current density,electrolysis time,etc. in the process of electrolysis are investigated. Experimental results show that under the optimal electrocoagulation conditions,the COD removing rate can reach 64%. In the subsequent process of advanced treatment of electrolysis,when current density is 0.06 A/cm² and electrolysis time 180 min,the total COD removing rate is 93%.

Key words: electrocoagulation, electrolysis, ship domestic sewage

中图分类号: 

• X703