电渗析脱盐在褐藻胶废钙水处理上的应用研究  

APPLICATION OF ELECTRODIALYSIS DESALINATION ON THE TREATMENT OF ALGINATE CALCIUM WASTEWATER

作　　者：苗钧魁[1] 贾福强[1,2] 冷凯良[1] 闫绍鹏[2] 孙伟红[1] 邢丽红[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,266071 [2]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《水处理技术》2013年第6期94-98,104,共6页Technology of Water Treatment

基　　金：公益性行业(农业)科研专项经费(200903030)

摘　　要：针对影响废钙水回用的关键因素-钠盐提出了电渗析处理工艺,考察了不同浓度的NaCl对褐藻酸钠的钙化絮凝和回收率的影响。结果表明,当溶液中NaCl质量分数低于0.2%时不会对褐藻酸钠的钙化絮凝效果及回收率带来不良影响;电渗析可有效脱除废钙水中的盐分,经电渗析工艺处理后电导率低于3 mS/cm的废钙水可作为冲稀水直接回用,对褐藻酸钠生产无不良影响,处理后电导率4 mS/cm的废钙水与自来水进行2:1混合后也可回用。Electrodialysis treatment was recommended according to the key factor （sodium salt） affected reuse of calcium wastewater. The effect of different concentrations of NaCI on the calcification-flocculation and recovery of sodium alginate was investigated. The results showed that NaCl concentration less than 0.2% has no harmful effect on the calcification-flocculation and recovery of sodium alginate. The Na^＋ and Ca^2＋ salt in calcium wastewater can be effectively removed by electrodialysis treatment. The treated calcium wastewater with conductivity less than 3 mS/era can be as dilute water for reuse, which has no harmful effect on the production ofalginate. In addition, the treated calcium wastewater with conductivity of 4 mS/cm can be mixed with tap-water as 2：1 for reuse.

关 键 词：电渗析 褐藻胶 废钙水处理 循环回用 

分 类 号：TQ028.8[化学工程] X703.1[环境科学与工程—环境工程]