title: High NH(4)(+)-N concentration wastewater treatment by shortcut nitriﬁcation-denitriﬁcation using a system of A/O inner loop fluidized bed biofilm reactors.
abstract: In this experiment, a rapid mass-transfer inner loop fluidized bed biofilm reactor (ILFBBR) was employed to treat synthetic high ammonia nitrogen-containing (NH(4)(+)-N) wastewater by shortcut nitriﬁcation-denitriﬁcation. The reactor operation was stable after a short start-up period. Ammonia oxidizing bacteria (AOB) were predominant and 65% nitrite (NO(2)(-)-N/NO(x)(-)-N) levels were achieved. During the nitriﬁcation-denitriﬁcation period, the removal rates of NH(4)(+)-N and total nitrogen (TN) reached 94 and 82%, respectively. From the material balance, it was indicated that 87% of NH(4)(+)-N was removed by shortcut nitrification. The features of ILFBBR and the beneﬁts of shortcut nitrification were combined in this experiment, and showed an excellent removal of NH(4)(+)-N from high-concentration NH(4)(+)-N wastewater.
authors: College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, China.
authors: X M
authors: XM
authors: Hu
authors: Y W
authors: YW
authors: Chen
authors: Y G
authors: YG
authors: Liao
authors: W F
authors: WF
authors: Yan
authors: S M
authors: SM
authors: Zhu
authors: S B
authors: SB
authors: Shen
mesh_terms: D018441:Biofilms; D019149:Bioreactors; D058465:Nitrification; D009584:Nitrogen / Q000032:analysis*; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D062065:Wastewater; D018508:Water Purification / Q000379:methods*
chemical_list: D009584:Nitrogen; D000644:Quaternary Ammonium Compounds; D062065:Wastewater