title: Optimum operation conditions of nitrogen and phosphorus removal by a biofilm-activated-sludge system.
abstract: In the biofilm and activated sludge combined system, denitrifying bacteria attached on the fibrous carriers in the anoxic tank, while the sludge containing nitrifying and phosphorus removal bacteria was only recirculated between the aerobic and anaerobic tanks. Therefore, the factors affected and restricted nitrification, denitrification and phosphorus removal in a traditional A/A/O process were resolved. This paper describes the optimum operation conditions for nitrogen and phosphorus removal using this system.
authors.affiliation: Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. jxliu@mail.rcees.ac.cn
authors.forename: Jun-Xin
authors.initials: JX
authors.lastname: Liu
authors.forename: J W
authors.initials: JW
authors.lastname: van Groenestijn
mesh_terms: D001420:Bacteria, Aerobic; D001421:Bacteria, Anaerobic; D018441:Biofilms; D019149:Bioreactors; D009584:Nitrogen / Q000302:isolation & purification / Q000378:metabolism*; D010758:Phosphorus / Q000302:isolation & purification / Q000378:metabolism*; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology*; D018508:Water Purification / Q000379:methods*
chemical_list: D012722:Sewage; D010758:Phosphorus; D009584:Nitrogen