摘要
通过考察均相与异相离子交换膜在不同操作条件下的能耗、电流效率、浓缩极限等参数,比较了2种离子交换膜的物理化学性能,并进行了操作参数优化实验。结果表明,均相离子交换膜的优化操作电压和最佳进料液NaCl的质量浓度分别为6 V和30 g/L,异相离子交换膜的优化操作电压和进料液NaCl的质量浓度分别为7.5 V和50g/L。在该优化条件下,采用均相离子交换膜和异相离子交换膜进行浓缩时,浓缩室的NaCl的最高质量浓度分别可达到191.2 g/L和149.3 g/L。异相离子交换膜比均相离子交换膜具有更好的结构稳定性。实验结果对电渗析工程应用中均相离子交换膜与异相离子交换膜的选择具有一定的借鉴与指导意义。
Parameters such as energy consumption, current efficient and concentration limitation were researched under different operating conditions to analyze the physicochemical performance of both the homogeneous ion-exchange membranes and the heterogeneous ion-exchange membranes and the optimal operation parameters was studied. The result showed that the optimal operating voltage and feed NaCl mass concentration of homogeneous ion-exchange membranes were 6 V and 30 g/L, respectively;and that of the heterogeneous ion-exchange membranes were 7.5 V and 50 g/L, respectively. Under the optimum condition, the maximum mass concentrations of NaCl in concentrated chambers by homogeneous and heterogeneous ion-exchange membranes were 191.2 g/L and 149.3 g/L, respectively. Heterogeneous ion-exchange membrane had better structural stability than homogeneous ion-exchange membrane. The experimental results have some reference and guiding significance for the selection of homogeneous ion exchange membrane and heterogeneous ion exchange membrane in electrodialysis engineering.
作者
周琦
王婷婷
陈波
王小娟
高学理
高从堦
ZHOU Qi;WANG Tingting;CHEN Bo;WANG Xiaojuan;GAO Xueli;GAO Congjie(Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;Tianjin Bohai Marine Monitoring and Surveillance Management Center, Tianjin 300480, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2019年第9期24-28,共5页
Technology of Water Treatment
基金
山东省重大科技创新工程项目（2018CXGC1003）
烟台市“十三五”海洋经济创新发展示范项目（YHCX-HS-L-201707）
山东省“泰山学者”建设工程专项
关键词
电渗析技术
电渗析浓缩
系统能耗
电流效率
electrodialysis
concentration by ED
energy consumption
current efficiency
