title: Effect of carbon source on nitrogen removal in anaerobic ammonium oxidation (anammox) process.
abstract: Anaerobic ammonium oxidation (anammox) has been regarded as an efficient process to treat high-strength wastewater without organic carbon source. To investigate nitrogen removal performance of anammox in presence of organic carbon source can broaden its application on organic wastewater treatment. In this work, effect of carbon source on anammox process was explored. Operating temperature was set at 35 ± 1°C. Influent pH and hydraulic retention time were 7.5 and 6 h, respectively. Effluent [Formula: see text] was affected little with COD no more than 480 mg/L. Independent of carbon source content, nitrite removal rate was around 99%. The variation of [Formula: see text] lagged behind [Formula: see text] at high COD content, and pH could be used as an indicator for [Formula: see text] removal. Specific anammox activity dropped from 0.39 to 0.19  [Formula: see text] at COD=720 mg/L. The remodified logistic model was quite appropriate for describing the nitrogen removal kinetics and predicting the performance of anammox process in presence of carbon source.
authors.affiliation: School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
authors.forename: Weiqiang
authors.initials: W
authors.lastname: Zhu
authors.affiliation: School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
authors.forename: Peiyu
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100085, China.
authors.forename: Huiyu
authors.initials: H
authors.lastname: Dong
authors.affiliation: School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China. Electronic address: ljin0532@126.com.
authors.forename: Jin
authors.initials: J
authors.lastname: Li
mesh_terms: D064751:Ammonium Compounds / Q000378:metabolism*; D000693:Anaerobiosis; D019149:Bioreactors; D002244:Carbon / Q000378:metabolism*; D052837:Chemoautotrophic Growth; D058440:Denitrification; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D009573:Nitrites / Q000302:isolation & purification; D009584:Nitrogen / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D013696:Temperature; D062065:Wastewater / Q000737:chemistry
chemical_list: D064751:Ammonium Compounds; D002244:Carbon; D009573:Nitrites; D009584:Nitrogen; D062065:Wastewater
keywords: Anaerobic ammonium oxidation; Carbon source; Inhibitory effect; Kinetic analysis; Nitrogen removal