硅藻土对填埋场膜滤浓缩液吸附处理效果研究  

Research on the Adsorption Treatment Effect of Landfill Membrane filtered Concentrated Leachate by Diatomite

作　　者：朱勇 王晨谦 龙於洋[2] ZHU Yong;WANG Chenqian;LONG Yuyang(Zhejiang Urban&Rural Planning Design Institute,310030;Zhejiang Gongshang University,Hangzhou,310018,China)

机构地区：[1]浙江省城乡规划设计研究院,310030 [2]浙江工商大学,浙江杭州310018

出　　处：《水处理技术》2019年第6期97-100,共4页Technology of Water Treatment

基　　金：国家自然科学基金(51778579)

摘　　要：探究了硅藻土对填埋场纳滤膜滤浓缩液吸附处理效果,分析了硅藻土投加量、吸附时间及pH对其盐度、电导率和COD去除效率的影响.结果表明,当pH=7、硅藻土投加量为25g/L、吸附时间为50min时,膜浓缩液水质有所改善,其COD去除率约为15.37%,其中的盐、腐殖质基本不会被硅藻土吸附而去除,所去除的COD主要来自易降解有机物.The adsorption treatment effect of the nanofiltration membrane concentrated leachate from landfill site by diatomite was investigated. The effect of diatomite dosage, adsorption time and pH on the removal of salinity, conductivity and COD were discussed. The results showed that the water quality of concentrated leachate was improved at the optimal conditions when pH, diatomite dosage and COD removal rate were 7, 25 g/L, and 50 min, respectively. The highest COD removal rate was 15.37% which could be ascribed to easily degradable organics. However, the salinity and humics of concentrated leachate could not be removed by diatomite adsorption.

关 键 词：硅藻土 纳滤 膜浓缩液 盐度 

分 类 号：X703[环境科学与工程—环境工程] TQ085[化学工程] P747[天文地球—海洋科学]