标题：RETRACTED: Evaluation of floc properties and membrane fouling in coagulation-ultrafiltration system: The role of enteromorpha polysaccharides (Retracted article. See vol. 397, pg. 215, 2016)
作者：Zhao, Shuang; Gao, Baoyu; Yue, Qinyan; Song, Wuchang; Jia, Ruibao; Liu, Pan
作者机构：[Zhao, Shuang; Gao, Baoyu; Yue, Qinyan; Liu, Pan] Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, Jinan 2501 更多
通讯作者地址：[Gao, BY]Shandong Univ, Shandong Key Lab Water Pollut Control & Resource, Sch Environm Sci & Engn, Jinan 250100, Peoples R China.
关键词：Enteromorpha polysaccharides; Coagulation-ultrafiltration; Humic acid; removal; Floc properties; Membrane fouling
摘要：The effects of a new coagulant aid - enteromorpha polysaccharides (Ep) on floc characteristics and the subsequent membrane fouling were investigated in this paper. Ep was used with polyaluminum chloride (PACl) to improve HA removal efficiency, and the variations of floc characteristics ascribed to the addition of Ep were studied systematically. Moreover, membrane fouling caused by coagulation effluent was also investigated using a dead-end batch ultrafiltration unit. Experiment results showed that the addition of adequate Ep could improve HA removal efficiency, and the optimal Ep dosage was 0.3 mg/L. Floc sizes, growth rates and their recovery abilities could be improved apparently due to Ep addition, while the fragile and much loosely constructed flocs were obtained. In addition, the results of ultrafiltration experiments indicated that when Ep was used, membrane fouling could be significantly reduced due to the loosely structured flocs. (C) 2015 Elsevier B.V. All rights reserved.