title: [Microbial biomass and activity in a full-scale O3-BAC filter].
abstract: The microbial biomass and activity in a full-scale drinking water O-BAC filter was investigated using the methods of lipid-P and SOUR. Because of the effect of O3 residue on TOC distribution and the formation of biofilm in biofilters could be inhibited by O3 residue in influent, the biomass in filter showed an "increase-reduce" pattern along vertical section and had a peak at the depth of 10 em. The SOUR per unit biomass fluctuated at the magnitude of 10(-4) mg/(nmol x h) with an adverse distribution to the biomass itself. The SOUR per unit volume media was around 10(-2) mg/(cm3 x h) and presented same tendency with biomass distribution at the media depth of 0-20 cm. The deeper distribution of SOURs per unit volume media had the same tendency with SOURs per unit biomass. All biomass demonstrated a certain increase of activity potential and the biomass attached to deeper media had a higher increase, which suggested the increase of metabolic activity provided a possible pathway for resistance of the reactors to shock load.
authors.affiliation: College of Environmental science and Engineering, Hohai University, Nanjing 210098, China. wuzhilinmy2006@163.com
authors.forename: Zhi-lin
authors.initials: ZL
authors.lastname: Wu
authors.forename: Xin
authors.initials: X
authors.lastname: Yu
authors.forename: Liang
authors.initials: L
authors.lastname: Zhu
authors.forename: Bing
authors.initials: B
authors.lastname: Liu
authors.forename: Biao
authors.initials: B
authors.lastname: Shen
authors.forename: Liang
authors.initials: L
authors.lastname: Fu
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D018533:Biomass; D002606:Charcoal / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation / Q000379:methods; D010126:Ozone / Q000737:chemistry*; D014871:Water Microbiology; D018508:Water Purification / Q000379:methods*; D014881:Water Supply / Q000032:analysis
chemical_list: D002606:Charcoal; D010126:Ozone