title: Feasibility of conventional and single-stage anaerobic ammonium oxidation processes for treating chlortetracycline wastewater.
abstract: Conventional and single-stage anaerobic ammonium oxidation (ANAMMOX) was carried out in bench-scale reactors to treat chlortetracycline (CTC) wastewater. The total nitrogen (TN) removal efficiency and rate for conventional ANAMMOX was 66.6 ± 5.9% and 2.7 ± 0.2 kg N/(m³·d), respectively, which was 58.6 ± 3.8% and 1.2 ± 0.1 kg N/(m³·d) for single-stage ANAMMOX. Single-stage ANAMMOX showed higher tolerance to CTC than conventional ANAMMOX. The nitrogen removal of conventional and single-stage ANAMMOX began to deteriorate when CTC was added, to 40 and 80 mg/L, respectively, with the former totally inhibited at 120 mg/L CTC and the latter at 140 mg/L CTC. TN removal rates were recovered to 1.2 and 0.7 kg N/(m³·d), respectively, when CTC concentration was reduced to 20 mg/L for 8 days. This study implied that ANAMMOX could be efficiently used to treat pharmaceutical wastewater, with single-stage implementation being more stable under antibiotic pressure.
authors.affiliation: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China E-mail: yaohongts@163.com.
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Liu
authors.affiliation: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China E-mail: yaohongts@163.com.
authors.forename: Hong
authors.initials: H
authors.lastname: Yao
authors.affiliation: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China E-mail: yaohongts@163.com.
authors.forename: Hao
authors.initials: H
authors.lastname: Liu
authors.affiliation: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China E-mail: yaohongts@163.com.
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.affiliation: School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China E-mail: yaohongts@163.com.
authors.forename: Lushen
authors.initials: L
authors.lastname: Zuo
mesh_terms: D064751:Ammonium Compounds / Q000737:chemistry / Q000378:metabolism*; D000693:Anaerobiosis; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000378:metabolism; D019149:Bioreactors; D002751:Chlortetracycline / Q000737:chemistry* / Q000378:metabolism; D009584:Nitrogen / Q000737:chemistry / Q000378:metabolism*; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods
chemical_list: D064751:Ammonium Compounds; D000900:Anti-Bacterial Agents; D002751:Chlortetracycline; D009584:Nitrogen; D062065:Wastewater; D014874:Water Pollutants, Chemical