title: [Performance of internal-loop air-lift nitrifying bioreactor].
abstract: The performance of internal-loop air-lift nitrifying bioreactor was good with strong tolerance to influent ammonia concentration (78.49 mmol/L), high volume converting rate (163.18 mmol/L.d) and obvious working stability (ammonia removal > 94.42%). During operation of internal-loop air-lift bioreactor, the nitrifying activated sludge was granulated. The nitrifying granular activated sludge began to appear on day 45. Its average diameter was 0.83 mm, settling velocity was 55.53 m/h and specific ammonia removal rate was 0.95 mmol (NH4(+)-N)/g (VS).d. The nitrifying granular activated sludge had the activity for anaerobic ammonia oxidation with ammonia oxidation rate of 0.23 mmol (NH4(+)-N)/g(VS).d and nitrite reduction rate of 0.24 mmol (NO2(-)-N)/g(VS).d.
authors.affiliation: Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.
authors.forename: Feng-Mei
authors.initials: FM
authors.lastname: Lin
authors.forename: Ping
authors.initials: P
authors.lastname: Zheng
authors.forename: Yang-Yang
authors.initials: YY
authors.lastname: Zhao
authors.forename: Bao-Lan
authors.initials: BL
authors.lastname: Hu
authors.forename: Jian-Song
authors.initials: JS
authors.lastname: Chen
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D000693:Anaerobiosis; D019149:Bioreactors; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D010084:Oxidation-Reduction; D012722:Sewage / Q000032:analysis
chemical_list: D009573:Nitrites; D012722:Sewage; D000641:Ammonia; D009584:Nitrogen