摘要
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.
Our research group has been focused on the treatment of shale gas wastewater by forward osmosis,and research progress is reported herein.The membrane preparation,the selection of draw solution and its recovery were discussed in detail.Home-made thin-film composite（TFC）membranes showed higher water permeability and salt rejection than the commercial HTI membrane when used in the treatment of shale gas wastewater.Shale gas drilling wastewater was pretreated by coagulation followed by ultra-filtration and then used as feed for the FO-VMD process.The product water quality of the FOVMD process is comparable to bottled water,which holds promise for the large scale application of such process for treatment of wastewaters of complicated compositions.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2014年第5期96-101,共6页
Membrane Science and Technology
基金
国家重大基础研究973项目(2009CB623402
2012CB720903)
自然科学基金项目(21176119)
上海市博士后科研资助计划(13R21421600)
关键词
正渗透
截留率
驱动溶液
膜材料
页岩气废水
forward osmosis
salt rejection
draw solution
membrane material
shale gas drilling wastewater
