title: [Sludge population optimisation in biological wastewater treatment systems through on-line control].
abstract: The structure and function of activated sludge community were studied in an A/O pilot-scale plant treating actual domestic wastewater. FISH results show the feasibility and effectiveness of sludge population optimisation. A/O process short-cut nitrification with process control of DO and aeration based on DO and pH on-line sensors can be achieved, and gradually eliminated nitrite oxidising bacteria, and therefore achieved nitrogen removal via the nitrite pathway. It can be realized sludge population optimisation, improving nitrogen removal and saving operational cost at the best with on-line process control.
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100022, China. mayong@bjut.edu.cn
authors.forename: Yong
authors.initials: Y
authors.lastname: Ma
authors.forename: Yong-zhen
authors.initials: YZ
authors.lastname: Peng
authors.forename: Xue-lei
authors.initials: XL
authors.lastname: Wu
authors.forename: Wei
authors.initials: W
authors.lastname: Zeng
mesh_terms: D019149:Bioreactors / Q000382:microbiology*; D017404:In Situ Hybridization, Fluorescence; D009573:Nitrites / Q000378:metabolism*; D009576:Nitrobacter / Q000235:genetics / Q000378:metabolism*; D009584:Nitrogen / Q000378:metabolism; D012722:Sewage / Q000382:microbiology*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods
chemical_list: D009573:Nitrites; D012722:Sewage; D009584:Nitrogen