超高压反渗透技术处理西北某垃圾渗滤液小试研究  

Small pilot study of ultra-high pressure reverse osmosis technology for treating landfill leachate in Northwest China

作　　者：张惠祥 张学敏[1,2] 孙三祥[1,2] 李丽 ZHANG Huixiang;ZHANG Xuemin;SUN Sanxiang;LI Li(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Ministry of Education Engineering Research Center of Water Resource Comprehensive Utilization in Cold and Arid Regions,Lanzhou 730070,China;China Railway Science Research Institute Co.,Ltd.,Chengdu 610032,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]寒旱地区水资源综合利用教育部工程研究中心,甘肃兰州730070 [3]中铁科学研究院有限公司,四川成都610032

出　　处：《工业水处理》2024年第12期104-108,146,共6页Industrial Water Treatment

基　　金：中铁科学研究院有限公司重点项目(中铁科研院(科研)字2021-KJ006-Z003-A2);甘肃省黄河水环境重点实验室开放基金项目(21YRWEK002);甘肃省科技计划项目(23JRRA856);高校科研创新平台重大培育项目(2024CXPT-14)。

摘　　要：垃圾渗滤液具有较高的COD、氨氮和电导率,其复杂的水质污染特性使得采用反渗透处理时负荷过高,导致膜性能及膜渗透通量下降,严重影响了处理效率。为使工艺能够顺利进行,以进水pH、运行压力和温度作为影响因素,以浓缩液和产水的COD、氨氮和电导率作为评价参数,通过分析浓缩倍率、膜通量及产水率的变化情况,对兰州某垃圾填埋厂渗滤液进行处理并得出最佳工况。结果表明,3种因素对碟管式反渗透(DTRO)系统影响效果为运行压力>温度>进水pH,且当pH为6.5,运行压力为6 MPa,温度为40℃时,系统的浓缩倍率最高,达到4.07,产水率最好,稳定达到75.6%,为后续浓缩液处理减轻了负荷。Landfill leachate has high COD,ammonia nitrogen and conductivity,these complex pollution characteristics make the reverse osmosis treatment load too high,which further leads to the decrease of membrane performance and membrane permeate flux.This paper took influent pH,operating pressure and temperature as influencing factors,and COD,ammonia nitrogen and conductivity of concentrate and produced water as evaluation parameters,to derive the optimal working conditions by analyzing the changes of concentration multiplication rate,membrane flux and water production rate to treat leachate from a landfill plant in Lanzhou.The results showed that the effect of the three factors on the DTRO system was operating pressure>temperature>inlet pH,and when the pH was 6.5,the operating pressure was 6 MPa,and the temperature was 40℃.The system had the highest concentration multiplier of 4.07 and the best water production rate of 75.6% consistently,which reduced the load for subsequent concentrate treatment.

关 键 词：垃圾渗滤液 碟管式反渗透 浓缩倍率 产水率 

分 类 号：X703.1[环境科学与工程—环境工程]