title: [Effect of composite flocculants made of polyaluminium chloride and polydimethyldiallyammonium chloride on ultra-filtration membrane characteristics].
abstract: The composite flocculants made of polyaluminium chloride and polydimethyldiallyammonium chloride (PAC-JY01) were used to treat the humic acid-kaolin simulation of water simples by enhanced coagulation. The effluent from coagulation continued to be treated by ultrafiltration. The objective of this research is to identify the mechanism of coagulation affecting UF due to different treated water quality and operational status of UF. The research shows that, in the coagulation-ultrafiltration (UF) hybrid process, the optimum coagulant dosage and pH value are 3 mg/L and pH = 6, respectively. At the optimum condition, the removal efficiency of UV254 and turbidity are 79.30%, 99.70%, respectively. In test conditions, the larger flocs are easy to deposit on the membrane surface causing membrane fouling.
authors.affiliation: College of Environment and Safety Engineering, Qingdao University of Science & Technology, Qingdao 266042, China. chuyongbao@163.com
authors.forename: Yong-bao
authors.initials: YB
authors.lastname: Chu
authors.forename: Xu-zhi
authors.initials: XZ
authors.lastname: Zhou
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
mesh_terms: D000536:Aluminum Hydroxide / Q000737:chemistry*; D005427:Flocculation; D006812:Humic Substances / Q000032:analysis; D007616:Kaolin / Q000302:isolation & purification; D008567:Membranes, Artificial; D011095:Polyethylenes / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D014462:Ultrafiltration / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
chemical_list: D006812:Humic Substances; D008567:Membranes, Artificial; D011095:Polyethylenes; D011108:Polymers; D000644:Quaternary Ammonium Compounds; D014874:Water Pollutants, Chemical; C016213:aluminum oxychloride; D007616:Kaolin; C041004:poly-N,N-dimethyl-N,N-diallylammonium chloride; D000536:Aluminum Hydroxide