基于消毒剂制备目标的渗滤液膜浓缩液处理  

Leachate Membrane Concentrate Treatment Based on Disinfectant Preparation Targets

作　　者：颉亚玮 刘浩东 樊丞越 严嘉明 刘宏远[1] XIE Ya-wei;LIU Hao-dong;FAN Cheng-yue;YAN Jia-ming;LIU Hong-yuan(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学土木工程学院,浙江杭州310023

出　　处：《中国给水排水》2024年第13期7-13,共7页China Water & Wastewater

摘　　要：生活垃圾焚烧厂的渗滤液经膜深度处理后,产生的膜浓缩液中含有高浓度的难生物降解有机物、成分复杂的盐分和重金属,处置不当会造成严重的环境污染。针对膜浓缩液高盐分,尤其是氯离子浓度高的特点,进行了“混凝沉淀+纳滤+电解”组合工艺制备含氯消毒剂的研究。结果表明,该组合工艺可以回收70%~80%的膜浓缩液,并将其制备成有效氯含量约为0.40%的消毒剂;同时,对COD和总硬度(以CaCO_(3)计)的去除率分别可达99.35%、78.43%。该工艺能够实现膜浓缩液的回收利用,所制备的消毒剂可用于厂区敞开式循环冷却水消毒。The leachate membrane concentrate from a domestic waste incineration plant,which is produced by the nanofiltration/reverse osmosis process,is a kind of wastewater containing high concentration of non-biodegradable organic matter,complex salts,and heavy metals.Considering the high salinity of the membrane concentrate,particularly the elevated concentration of chloride ions,we conducted a study on producing chlorine-containing disinfectant through the integrated process of “coagulation and precipitation + nanofiltration + electrolysis”.The results showed that 70%-80% of the membrane concentrate could be recovered by the combined process and prepared into a disinfectant containing 0.40% effective chlorine.The removal rates of COD and total hardness(expressed in terms of CaCO3) were 99.35% and 78.43%,respectively.This process can facilitate the recycling of membrane concentrate and the disinfectant can be utilized for treating the open circulating cooling water in the plant.

关 键 词：垃圾渗滤液 膜浓缩液 混凝沉淀 纳滤 电解 消毒剂 

分 类 号：TU992[建筑科学—市政工程]