混凝、芬顿及电催化全量处理垃圾渗滤液膜浓缩液研究  

Study on the Full-Scale Treatment of Landfill Leachate Membrane Concentrate by Coagulation,Fenton Process and Electrocatalysis

作　　者：李俊 何昌伟 杨虎君 王黎 王怀江 李科 LI Jun;HE Changwei;YANG Hujun;WANG Li;WANG Huaijiang;LI ke(WELLE Environmental Group Co.,Ltd.,Changzhou Jiangsu 213000,China)

机构地区：[1]维尔利环保科技集团股份有限公司,江苏常州213000

出　　处：《辽宁化工》2025年第3期401-405,共5页Liaoning Chemical Industry

基　　金：陕西省教育厅科研计划(项目编号:21JK0841);陕西省自然科学基础研究计划(项目编号:2021JQ-600)。

摘　　要：垃圾渗滤液膜浓缩液是一种污染浓度高、组分极其复杂的有机污染废水,拟采用混凝+芬顿+电催化氧化联用方式来对膜浓缩液进行全量化处理。结果表明:当混凝药剂采用三氯化铁,投加量为10 mL‧L^(-1)时进行混凝预处理,浓缩液COD从5000~6000 mg‧L^(-1)降低至1000~1500 mg‧L^(-1),去除效果达到70%以上;当混凝出水进行芬顿反应时,控制双氧水:COD=2:1,双氧水:硫酸亚铁=3:1,COD去除效率达到57.3%;最终使用电催化氧化处理芬顿出水,控制最佳操作条件:电流密度=20 mA‧cm^(-2),极板间距=1.5 cm,不进行除硬,停留时间=4 h,最终出水可以达到标准。Landfill leachate membrane concentrated liquid is a kind of organic pollution wastewater with high pollution concentration and extremely complex components.It is proposed to use coagulation+Fenton+electrocatalytic oxidation to fully quantify the membrane concentrated liquid.The results showed that when ferric chloride was used as coagulant and the dosage was 10 mL‧L^(-1),the COD of concentrated liquid was reduced from 5000–6000 mg‧L^(-1) to 1000–1500 mg‧L^(-1),and the removal effect reached more than 70%.When Fenton reaction is carried out on the coagulant effluent,the COD removal efficiency reaches 57.3%by controlling hydrogen peroxide:COD=2:1 and hydrogen peroxide:ferrous sulfate=3:1.Finally,Fenton's effluent is treated by electrocatalytic oxidation,and the optimal operating conditions are controlled:current density=20 mA‧cm^(-2),pad spacing=1.5 cm,no hardening,residence time=4 h,and the final effluent can meet the standards.

关 键 词：膜浓缩液 混凝 芬顿 电催化 

分 类 号：X703[环境科学与工程—环境工程]