正向渗透除硼试验研究  

Research on Boron Removal by Forward Osmosis

作　　者：陈璐斌 周宁玉[1,2] 谢朝新[1,2] 黄泽明[1] 

机构地区：[1]后勤工程学院国防建筑规划与环境工程系,重庆401311 [2]后勤工程学院重庆市水工业与环境工程技术研究中心,重庆401311

出　　处：《后勤工程学院学报》2016年第3期62-67,共6页Journal of Logistical Engineering University

基　　金：重庆市重大科技攻关项目(CSTC2012gg-sfgc00002);2013年重庆高校创新团队建设计划项目(KJTD201340)

摘　　要：以KCl、MgCl_2溶液为汲取液(DS),研究了正向渗透(FO)除硼过程中汲取液种类与浓度对水通量、反向溶质通量以及除硼效果的影响。结果表明:随着汲取液溶质浓度增大,水通量呈非线性增加且增加幅度逐渐减小,KCl汲取液对应的水通量随溶质浓度的增长率高于MgCl_2汲取液;反向溶质通量的增长规律与水通量的变化规律相似,KCl汲取液对应的反向溶质通量远大于同浓度MgCl_2汲取液;KCl汲取液的FO过程对硼的截留率大于同浓度MgCl_2汲取液;以KCl、MgCl_2溶液为汲取液的正向渗透均能将含硼水中硼的质量浓度从5 mg/L降低至0.5 mg/L,符合我国《生活饮用水卫生标准》对硼的要求。The impact of different species and molar concentration of draw solution（DS） on water flux,reverse solute flux and boron removal by forward osmosis（FO） was investigated,using KCl and MgCl2 as DS.The results indicated that the water flux and reverse solute flux of KCl and MgCl2 non-linearly increased with the increase of DS molar concentration,and the increment of both decreased.The growth rate of water flux using KCl as DS was higher than that using MgCl2 as DS,and the reverse solute flux of KCl was far higher than that of MgCl2 at the same molar concentration.Furthermore,the rejection of boron in FO using KCl as DS was higher than that using MgCl2 as DS.After the raw water with 5 mg/L boron was treated by FO using KCl and MgCl2 as DS,the boron mass concentration of product water was lower than 0.5 mg/L,meeting the requirement of Standers for drinking water quality for boron.

关 键 词：正向渗透 汲取液 除硼 水通量 反向溶质通量 

分 类 号：TQ028.8[化学工程]