title: [Effect of aeration intensity on the nitrogen and phosphorus removal performance of AOA membrane bioreactors].
abstract: The ability of simultaneous phosphorus and nitrogen removal of sequencing batch membrane bioreactor run in anaerobic/oxic/ anoxic mode (AOA MBR) was examined under three aeration intensities [2.5, 3.75 and 5.0 m3 x (m2 x h)(-10]. The results showed that the averaged removals of COD were over 90% at different aeration intensities. And the higher aeration intensity was, the more ammonia nitrogen removal rate achieved. The removal rates of NH4(+) under the three aeration intensities were 84.7%, 90.6% and 93.8%, respectively. Total nitrogen removal rate increased with the increasing aeration intensity. But excessive aeration intensity reduced TN removal. The removal rates of TN under the three aeration intensities were 83.4%, 87.4% and 80.6%, respectively. Aeration intensity affected the denitrifying phosphorus ability of the AOA MBR. The ratio of denitrification phosphorus removal under the three aeration intensities were 20%, 30.2% and 26.7%, respectively.
authors.affiliation: Institute of Environmental Resource & Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China. xiaoyangchen@yahoo.cn
authors.forename: Xiao-Yang
authors.initials: XY
authors.lastname: Chen
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Xue
authors.forename: Jing-Ni
authors.initials: JN
authors.lastname: Xiao
authors.forename: Han-Min
authors.initials: HM
authors.lastname: Zhang
authors.forename: Feng-Lin
authors.initials: FL
authors.lastname: Yang
authors.forename: Wei-Ping
authors.initials: WP
authors.lastname: Wang
authors.forename: Chun-Lai
authors.initials: CL
authors.lastname: Hong
authors.forename: Feng-Xiang
authors.initials: FX
authors.lastname: Zhu
mesh_terms: D019149:Bioreactors; D058440:Denitrification; D008567:Membranes, Artificial; D009584:Nitrogen / Q000302:isolation & purification* / Q000378:metabolism; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010758:Phosphorus / Q000302:isolation & purification* / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry
chemical_list: D008567:Membranes, Artificial; D009584:Nitrogen; D010100:Oxygen; D010758:Phosphorus; D062065:Wastewater