title: Performance and microbial structure of a combined biofilm reactor.
abstract: A novel combined biofilm reactor was established and applied as a single treatment unit for carbon and nitrogen removal of wastewater. The nitrogen removal performance of the reactor at different levels of organic carbon (COD) loading was investigated when the influent total nitrogen (TN) loading was 0.74 g TN/m2 day. Continuous experimental results demonstrated that 80% nitrogen was eliminated when the influent COD loading ranged between 2.06 g and 3.92 g COD/m2 day. Microbial composition in the reactor was analyzed using fluorescent in situ hybridization (FISH) and conventional batch tests. The relative abundance of ammonia-oxidizing bacteria in the aerobic zone of the reactor measured by FISH was consistent with the result from conventional batch tests.
authors.affiliation: Department of Environmental Science and Technology, Dalian University of Technology, 116023 Dalian, China. ghy2721@sohu.com
authors.forename: Haiyan
authors.initials: H
authors.lastname: Guo
authors.forename: Jiti
authors.initials: J
authors.lastname: Zhou
authors.forename: Wang
authors.initials: W
authors.lastname: Jing
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Zhang
authors.forename: M Salah
authors.initials: MS
authors.lastname: Uddin
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D018441:Biofilms / Q000254:growth & development*; D019149:Bioreactors / Q000382:microbiology*; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods; D018508:Water Purification / Q000379:methods
chemical_list: D000641:Ammonia; D009584:Nitrogen