膜集成技术在煤化工高盐废水资源化中的应用  

Application of Membrane Integration Process in High Saline Wastewater Recycling of Coal Chemical Industry

作　　者：吴雅琴[1] 申屠勋玉[1] 杨波[1] 朱圆圆[1] 丁逸洲 

机构地区：[1]杭州水处理技术研究开发中心有限公司,浙江杭州310012

出　　处：《煤化工》2016年第4期6-9,共4页Coal Chemical Industry

基　　金：国家科技支撑计划(2014BAB07B01);杭州市创新链产业链重大创新项目(20132111A01)

摘　　要：简要介绍了纳滤膜、正渗透、电驱动膜等膜工艺,采用杭州水处理技术研究开发中心研发的膜组合集成工艺技术,对煤化工高盐废水进行分盐、浓缩、结晶制盐和制酸碱等。应用结果表明:膜集成工艺可以大幅减少蒸发量,降低蒸发器投资与结晶分盐的难度,双极膜电渗析装置可以替代蒸发结晶单元,使液体盐转化为酸碱,回收利用,实现了煤化工高盐废水的资源化,使"零液排放"达到经济可行。NF membrane, forward osmosis, electrically-driven membrane technologies are introduced. Membrane integration process （membrane pre-salt separation ＋ membrane concentration ＋ salt separation via crystallization） developed by Hangzhou Water Treatment Technology Development Center is adopted for salt separation, concentration, salt making via crystallization, acid and alkali production, etc. for high saline wastewater in coal chemical industry. The results show that the membrane integration process can sharply reduce evaporation volume and evaporator investment, lower the difficulty of salt separation via crystallization. Liquids can be converted into acid and alkali for recycling by using bipolar membrane electroosmosis unit to replace evaporation crystallization unit. Those processes enable the resource utilization of high saline wastewater in coal chemical industry, making ＂zero discharge＂ economical and feasible.

关 键 词：煤化工高盐废水 膜集成 膜浓缩 纳滤 电驱动膜 双极膜 

分 类 号：TQ028.8[化学工程] X784[环境科学与工程—环境工程]