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垃圾渗滤液膜滤浓缩液膜蒸馏减量技术研究

作者：李枫，贾晓琳，王瑞婧，姚鸣铎，侯得印

单位： 1. 中国科学院生态环境研究中心，工业废水无害化与资源化国家工程研究中心，北京100085；2. 中国科学院大学，北京100049

关键词：渗滤液；气隙膜蒸馏；膜滤浓缩液；膜蒸馏减量

DOI号：

分类号： X52；TQ319

出版年,卷(期):页码： 2024,44(1):114-122

摘要：

垃圾渗滤液膜滤浓缩液的高效处理已成为市政与环境污染治理领域的迫切需求。本研究以北京市某垃圾填埋场的渗滤液膜滤浓缩液为研究对象，采用“预处理-气隙膜蒸馏”组合工艺对其进行减量化处理。我们研究了不同组合工艺对浓缩液处理效果的影响，发现从实用性角度考虑，混凝沉淀预处理对于浓缩液的减量化过程具有最佳的运维保障效果，可将垃圾渗滤液膜滤浓缩液减少80%以上。本研究发现合适的预处理可以显著降低膜污染，从而直接影响膜蒸馏膜通量的稳定性和对浓缩液的体积减量率。

The efficient treatment of concentrated leachate has become an urgent need in the field of municipal and environmental pollution control. In this study, the concentrated leachate from a garbage landfill in Beijing was taken as the research object, and a combination process of "pretreatment-air gap membrane distillation" was used for its reduction treatment. We studied the effects of different combination processes on the treatment efficiency of the concentrated leachate. From a practical perspective, coagulation and precipitation pretreatment has the best operational guarantee effect on the reduction process of the concentrated leachate, and can reduce the concentrated leachate of garbage by more than 80%. We found that suitable pretreatment can significantly reduce membrane fouling, thereby directly affecting the stability of membrane distillation permeation flux and the volume reduction rate of the concentrated leachate.

基金项目：

国家重点研发计划项目（2023YFC3207002），国家自然科学基金面上项目（51978650）

作者简介：

李枫（1988-），男，山东肥城，助理研究员，工学博士，膜法工业废水处理及资源化，E-mail：fengli@rcees.ac.cn

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