title: Trace elements enhance biofilm formation in UASB reactor for solo simple molecule wastewater treatment.
abstract: In this paper, trace elements (TE) adding was investigated in one bench-scale UASB reactor treating solo simple molecule wastewater with the aim of evaluating its effect on enhancing biofilm formation. After adding sufficient TE (3 mL/L) in the influent, during 3 days, COD removal efficiency increased from 74% to 90% comparing to no adding TE. Over 55 days of operation, the organic loading rate (OLR) reached 11 g/L/day with COD removal efficiencies greater than 90%. While in the steady running period no effect even improvement on treatment performance was observed without any TE adding. The results illuminated that TE accounted for quick start-up of the UASB biofilm system rather than ever known biocatalyst.
authors.affiliation: The Guangxi Key Laboratory of Environmental Engineering, Protection and Assessment, College of Environmental Science and Engineering, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, PR China. zhangwj_zhangwj@hotmail.com
authors.forename: Wenjie
authors.initials: W
authors.lastname: Zhang
authors.forename: Xuehong
authors.initials: X
authors.lastname: Zhang
authors.forename: Dunqiu
authors.initials: D
authors.lastname: Wang
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Koga
authors.forename: J D
authors.initials: JD
authors.lastname: Rouse
authors.forename: Kenji
authors.initials: K
authors.lastname: Furukawa
mesh_terms: D000693:Anaerobiosis; D018441:Biofilms / Q000187:drug effects / Q000254:growth & development*; D057919:Biological Oxygen Demand Analysis; D002853:Chromatography, Liquid; D017404:In Situ Hybridization, Fluorescence; D008697:Methane / Q000096:biosynthesis; D008855:Microscopy, Electron, Scanning; D014131:Trace Elements / Q000494:pharmacology*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
chemical_list: D014131:Trace Elements; D008697:Methane