电絮凝法处理垃圾中转站渗滤液的效能及条件优化  

作　　者：桑建伟 黄家榜 周锐 杨宏星 朱守诚 

机构地区：[1]合肥市东方美捷分子材料技术有限公司污水净化与生态修复材料安徽省重点实验室,安徽合肥230088

出　　处：《环境保护与循环经济》2024年第7期16-19,42,共5页environmental protection and circular economy

摘　　要：采用电絮凝法处理垃圾中转站的渗滤液,分别考察了阳极材料、电流密度、极板间距、反应时间、初始pH及电解质过硫酸钾对渗滤液COD去除率的影响。结果表明:在最佳反应条件下,即采用铁板为阳极材料、电流密度为0.042 A/cm^(2)、极板间距为1 cm、初始pH为7,电絮凝反应3 h后,可将渗滤液COD浓度从23525 mg/L降低至10619 mg/L,其去除率可达54.86%。投加电解质过硫酸钾与电絮凝协同作用对渗滤液进行预处理,可有效强化电絮凝反应对渗滤液COD的去除效果,反应初期COD去除率相对提高了6.68%;但当电解时间大于3 h后,过硫酸钾的强化作用逐渐减弱。In this study,electroflocculation was used to treat the leachate from the waste transfer station.The effects of anode material,current density,plate spacing,reaction time,initial pH value and electrolyte potassium persulfate on the COD removal efficiency of leachate were investigated respectively.The results showed that under the optimal reaction conditions,using the iron plate as the anode material,0.042 A/cm^(2) of the current density,1 cm of the plate spacing,and 7 of the initial pH value,3 h of the reaction time,the leachate COD could be reduced from 23525 mg/L to 10619 mg/L,and the removal rate could reach 54.86%.The addition of electrolyte potassium persulfate and electroflocculation cooperate to pretreatment of leachate,which can effectively strengthen the removal effect of electroflocculation reaction on the leachate COD.The COD removal rate in the initial stage of the reaction was relatively increased by 6.68%.However,when the electrolysis time was greater than 3 h,the strengthening effect of potassium persulfate was gradually weakened.

关 键 词：电絮凝法 垃圾中转站渗滤液 电流密度 极板间距 

分 类 号：X703[环境科学与工程—环境工程]