title: Appropriate design of activated sludge systems for nitrogen removal from high strength wastewaters.
abstract: The study is focused on defining a conceptual approach for the design of activated sludge systems treating strong wastewater for nitrogen removal. The effect of major factors such as COD/N ratio, denitrification potential, available nitrate, anoxic volume fraction, and recycle ratio is evaluated in terms of basic stoichiometry. An algorithm for appropriate design is developed for a continuous flow activated sludge and sequencing batch reactor, both operated in a pre-denitrification mode. The design approach is tested for two types of strong industrial wastewaters with different N contents and COD/N ratios and a typical domestic sewage for comparative evaluation.
authors.affiliation: Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey.
authors.forename: Nazik
authors.initials: N
authors.lastname: Artan
authors.forename: Derin
authors.initials: D
authors.lastname: Orhon
authors.forename: Euiso
authors.initials: E
authors.lastname: Choi
mesh_terms: D000465:Algorithms; D019149:Bioreactors; D007220:Industrial Waste; D008962:Models, Theoretical; D009584:Nitrogen / Q000302:isolation & purification*; D010100:Oxygen / Q000737:chemistry; D012722:Sewage / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014876:Water Pollution / Q000517:prevention & control; D018508:Water Purification / Q000379:methods*
chemical_list: D007220:Industrial Waste; D012722:Sewage; D009584:Nitrogen; D010100:Oxygen