介绍本课题组利用正渗透技术处理页岩气废水的研究进展,对正渗透膜材料的制备、驱动液的选择和回收等关键问题进行阐述.分别利用界面聚合法和浸入沉淀相分离法制备正渗透膜材料用于页岩气废水处理,并与商业的HTI膜进行比较.结果显示:界面聚合膜具有更高的通量和盐截留率.页岩气废水经絮凝沉淀和超滤等前处理后,通过FO-VMD集成技术得到可饮用的纯净水,同时对驱动液进行回收并循环利用,实现零排放.
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