title: [Analysis of on-line control strategies of aeration flow rate for aerobic-anoxic biological nitrogen removal process].
abstract: Aeration control is the important control variable for the biological nitrogen removal process, which determines the system removal performance and operational cost. Some typical control strategies of aeration for aerobic-anoxic biological nitrogen removal process were studied using Benchmark-BSM1 platform model. It was demonstrated that the best control strategy of aeration was feedforward-feedback control, following by feedback control, constant DO control and constant aeration flow rate control. Compared with constant DO control, the effluent ammonia concentration, the maximum effluent ammonia concentration and aeration cost were reduced by 24%, 18%, and 9%, respectively, with the feedforward-feedback control. The aeration control ideas and control strategies at different conditions were determined. In order to achieve nitrification optimal control, the aeration flow and aeration volume should be both controlled.
authors.affiliation: Key Laboratory of Beijing for 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: Shu-ying
authors.initials: SY
authors.lastname: Wang
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D019149:Bioreactors; D008962:Models, Theoretical; D009584:Nitrogen / Q000302:isolation & purification* / Q000378:metabolism*; D010084:Oxidation-Reduction; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D009584:Nitrogen