title: [Characteristic research of shortcut denitrification in synthetic ammonia industrial wastewater treatment process].
abstract: Active sludge was from a pilot-scale synthetic ammonia industrial wastewater treatment plant with a strengthen anoxic-oxic (A/O) technology. The zero order kinetic model was suit for describing shortcut and complete denitrification process. Experimental results showed that shortcut denitrification could reduce 14.1% carbon source consumption and 55.7% denitrification time, respectively, comparing with complete denitrification. The maximum specific denitrification rate was 0.509 g x (g x d)(-1) with an initial NO2(-) -N concentration of 36.82 mg x L(-1) and pH 7.5. In the industrial practice, it must be avoided pH higher than 9.0 in anoxic zone for industrial treatment. Replication-selective denitrifying bacteria showed a strong adaptability to methanol and ethanol, but showed maladaptation to other small molecular and easily biodegradable organics, such as glucose and acetic acid.
authors.affiliation: Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China. sohu_town@126.com
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Ze-Bing
authors.initials: ZB
authors.lastname: Li
authors.forename: Jia-Xuan
authors.initials: JX
authors.lastname: Ma
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Wang
authors.forename: Bai-Hang
authors.initials: BH
authors.lastname: Zhao
authors.forename: Jun
authors.initials: J
authors.lastname: Li
mesh_terms: D000641:Ammonia / Q000138:chemical synthesis*; D019149:Bioreactors / Q000382:microbiology; D058440:Denitrification; D007221:Industry; D009584:Nitrogen / Q000302:isolation & purification*; D009585:Nitrogen Dioxide / Q000302:isolation & purification; D012722:Sewage / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*
chemical_list: D000641:Ammonia; D009584:Nitrogen; D009585:Nitrogen Dioxide; D012722:Sewage; D062065:Wastewater