文章摘要
丁国栋,冀世锋,邢云青,蒋经纬,刘圣慧,韩乃旭,方涵,贾磊.高浓度残留铝对反渗透膜的污染特性[J].上海海洋大学学报,2020,29(5):770-778
高浓度残留铝对反渗透膜的污染特性
Study on fouling characteristics of reverse osmosis membrane with high residual aluminum
投稿时间:2019-11-14  修订日期:2020-02-04
DOI:10.12024/jsou.20191102851
中文关键词: 膜污染    pH  操作压力  进水浓度
英文关键词: membrane fouling  aluminum  pH  operating pressure  influent concentration
基金项目:膜法处理农药废液减量化研究(D-8006-18-0003);重金属危险废液减量化技术调研与一体化处理装置联合研发项目(D-8006-19-0063)
作者单位E-mail
丁国栋 上海海洋大学 海洋生态与环境学院, 上海 201306  
冀世锋 上海海洋大学 海洋生态与环境学院, 上海 201306
上海海洋大学 海洋环境监测与评价中心, 上海 201306 
 
邢云青 上海海洋大学 海洋生态与环境学院, 上海 201306
上海海洋大学 海洋环境监测与评价中心, 上海 201306 
yqxing@shou.edu.cn 
蒋经纬 上海海洋大学 海洋生态与环境学院, 上海 201306  
刘圣慧 上海海洋大学 海洋生态与环境学院, 上海 201306  
韩乃旭 上海海洋大学 海洋生态与环境学院, 上海 201306  
方涵 上海海洋大学 海洋生态与环境学院, 上海 201306  
贾磊 上海环境保护有限公司, 上海 201306  
摘要点击次数: 200
全文下载次数: 171
中文摘要:
      针对含高浓度铝盐混凝剂的模拟废水,结合膜面形貌和元素分析技术,研究了进水pH、进水铝盐浓度及系统操作压力等因素对反渗透膜污染的影响机制。结果表明:进水中高浓度的铝盐迅速在反渗透膜表面形成密实的无机污染层。进水pH对膜污染的影响效应最为显著;相比于进水呈酸性或碱性的情况,当进水pH为中性时,膜通量最低,脱盐率最高,膜面污染层中铝含量最高,污染程度最严重。酸性进水时膜面污染层中Al元素含量低于碱性进水,膜污染程度最低。在进水pH相同情况下,对于膜面污染层的形成,进水中铝浓度影响更显著,而操作压力影响不大。建议在实际工程中,调整进水pH至碱性,精准控制铝混凝剂投加,维持适当操作压力,以降低铝盐引起的膜污染。
英文摘要:
      The effects of influent pH, influent concentration and operating pressure on reverse osmosis membrane fouling were investigated by simulating waste water containing high concentration aluminum, with the help of membrane surface morphological and elemental analysis. A dense inorganic fouling layer was formed on the surface of reverse osmosis membrane. Among the three factors investigated, the influent pH has the most significant effect on membrane fouling. When the influent pH is neutral, the membrane flux is the lowest, as well as the salt rejection is the highest. SEM graphs and EDS analysis showed that the content of aluminum in the membrane foulant was the highest,indicating that the most serious fouling. When the acid water enters, the content of Al in the fouling layer on the film surface is lower than that of alkaline water,which means the membrane fouling is the lowest.Under the same influential pH, the effect of residual aluminum concentration on the formation of fouling layer is more significant, while the effect of operating pressure is not. As for practical process,it is suggested that adjusting the pH of inlet water to alkaline, accurately controlling the addition of aluminum coagulant, maintaining appropriate operating pressure, are key factors to retard the membrane fouling caused by residual aluminum.
HTML 查看全文     下载PDF阅读器
关闭