title: Effects of compound bioflocculant on coagulation performance and floc properties for dye removal.
abstract: A series of jar tests was conducted to investigate the coagulation performance of using compound bioflocculant (CBF) as a coagulant aid with aluminum sulfate (AS) and polyaluminum chloride (PAC) in synthetic dyeing wastewater treatment. Floc size, growth, breakage, re-growth and sedimentation natural were investigated by PDA2000. The results showed that the corresponding dual-coagulants of AS and PAC enhanced the color removal efficiency, especially at low aluminum dosage. Results also indicated that the floc generated by aluminum salts and CBF had larger size and higher growth rate. In addition, for both AS and PAC the floc recoverability was improved by addition of CBF. The adsorption and bridging effect of CBF performed a positive role in dye wastewater treatment.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Huang
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Bo
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Yanxia
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China. Electronic address: baoyugao_sdu@aliyun.com.
authors.forename: Baoyu
authors.initials: B
authors.lastname: Gao
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Shenglei
authors.initials: S
authors.lastname: Sun
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Qinyan
authors.initials: Q
authors.lastname: Yue
authors.affiliation: School of Environmental Science and Engineering, Shandong University, No. 27 Shanda South Road, Jinan 250100, Shandong, People's Republic of China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
mesh_terms: D000534:Alum Compounds / Q000737:chemistry*; D000535:Aluminum / Q000032:analysis; D000536:Aluminum Hydroxide / Q000737:chemistry*; D003116:Color; D004396:Coloring Agents / Q000302:isolation & purification*; D005427:Flocculation; D010316:Particle Size; D055672:Static Electricity; D013997:Time Factors; D018508:Water Purification / Q000379:methods*
chemical_list: D000534:Alum Compounds; D004396:Coloring Agents; C016213:aluminum oxychloride; C041524:aluminum sulfate; D000536:Aluminum Hydroxide; D000535:Aluminum
keywords: Aluminum salt; Compound bioflocculant; Dye removal; Floc re-growth; Floc strength