title: Biological pretreatment of Yellow River water.
abstract: Bio-ceramic filter(BF) and moving-bed biofilm reactor (MBBR) were used for biological pretreatment of Yellow River water in this study. The BF only had slight advantage over MBBR for TOC and ammonia removal. However, like UV254, the average removal rate of THMFP in the BF was much higher than that in the MBBR. UV254 removal did not show obvious correlation with trihalomethane formation potential (THMFP) removal. Hexachlorocyclohexane could be effectively removed in both BF and MBBR. As for diatom and cyanobateria removal the MBBR had better performance than the BF, which was contrary to the average chlorophyll-a ( Chl-a) removal rate. The proposal was made in this study that biological flocculation and sedimentation of sloughed biofilm should play a more important role on algae removal in the MBBR than in the BF. The BF and MBBR could effectively remove microcystins. Moreover, MBBR could be a promising technology for biological pretreatment.
authors.affiliation: Department of Environmental Sciences, College of Environmental Sciences, Peking University, Beijing 100871, China. xiesg@pku.edu
authors.forename: Shu-Guang
authors.initials: SG
authors.lastname: Xie
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Tang
authors.forename: Wei-Zhong
authors.initials: WZ
authors.lastname: Wu
authors.forename: Dong-Hui
authors.initials: DH
authors.lastname: Wen
authors.forename: Zhan-Sheng
authors.initials: ZS
authors.lastname: Wang
mesh_terms: D000641:Ammonia / Q000302:isolation & purification; D018441:Biofilms; D019149:Bioreactors; D002681:China; D002734:Chlorophyll / Q000302:isolation & purification; D000077194:Chlorophyll A; D056890:Eukaryota / Q000302:isolation & purification; D052998:Microcystins; D009566:Nitrates / Q000302:isolation & purification; D010456:Peptides, Cyclic / Q000302:isolation & purification; D045483:Rivers; D014874:Water Pollutants, Chemical
chemical_list: D052998:Microcystins; D009566:Nitrates; D010456:Peptides, Cyclic; D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D000641:Ammonia; C078588:microcystin; D000077194:Chlorophyll A