摘要
介绍了纳滤、反渗透、均相电驱动膜和双极膜等膜分离及膜浓缩组合工艺,在盐分单一及盐分复杂的高盐废水处理过程中的应用。膜分离和膜浓缩组合集成工艺技术可以大幅减少蒸发量和蒸发器投资,同时也大幅降低了结晶分盐的难度,可实现氯化钠和硫酸钠等盐分的分别回收利用,结晶盐的品质较好;双极膜技术可以替代蒸发结晶技术,实现液体盐转化为酸碱回收利用。多个项目实际运行结果表明,2种方法在技术上均实现了高盐废水的"零排放"、资源化利用,经济可行。
RO, NF, homogeneous membrane, bipolar membrane and other technologies which used for membrane separation and membrane combined concentration technique were introduced in this paper for treating high saline wastewater. The process of membrane separation and concentration can sharply reduce evaporation volume and evaporator cost, lower the difficulty of crystallizing, separating the salt of NaC1 and Na2SO4 separately and the quality of crystal salt are good. Liquids can transform into acid and alkali for recycling by using bipolar membrane, so it can replace evaporation crystallization process. The operation results of more than one projects show that both of the two methods can meet ＂zero emissions＂ and recycling of high salt waste water economically.
出处
《水处理技术》
CAS
CSCD
北大核心
2016年第7期118-120,125,共4页
Technology of Water Treatment
基金
国家科技支撑计划(2012BAB17B01)
浙江省海水淡化技术研究重点实验室(2012E10001)
关键词
高盐废水
资源化
零排放
膜集成技术
分盐
high saline wastewater
recycling
＂Zero Discharge＂
membrane combined technique
separate and utilize salt
