标题：Pre-treatment of pyridine wastewater by new cathodic-anodic-electrolysis packing
作者：Jin Yang;Yue Qinyan;Yang Kunlun;Wu Suqing;Li Shengjie;Gao Baoyu;Gao Yuan
作者机构：Shandong University, Jinan 250100, China.;山东大学,中国
通讯作者地址：[Yue, QY; Gao, BY]Shandong Univ, Jinan 250100, Shandong, Peoples R China.
关键词：Cathodic-anodic-electrolysis;packing;Pyridine wastewater;pH;Hydraulic retention time;Air-liquid ratio;Initial concentration
摘要：A novel cathodic-anodic-electrolysis packing (CAEP) used in the treatment of pyridine wastewater was researched,which mainly consisted of 4,4\'-diamino-2,2\'-disulfonic acid (DSD acid) industrial iron sludge.The physical properties and morphology of the packing were studied.The CAEP was used in a column reactor during the pretreatment of pyridine wastewater.The influence of pH,hydraulic retention time (HRT),the air-liquid ratio (A/L) and the initial concentration of pyridine were investigated by measuring the removal of total organic carbon (TOC) and pyridine.The characterization results showed that the bulk density,grain density,water absorption percentage and specific surface area were 921 kg/m3,1086 kg/m3,25％ and 29.89 m2/g,respectively;the removal of TOC and pyridine could reach 50％ and 58％ at the optimal experimental conditions (pH =3,HRT =8 hr,A/L =2).Notably,the surface of the packing was renewed constantly during the running of the filter,and the handling capacity was stable after running for three months.