title: Bioaugmentation treatment of municipal wastewater with heterotrophic-aerobic nitrogen removal bacteria in a pilot-scale SBR.
abstract: PCN bacteria capable of heterotrophic-aerobic nitrogen removal was successfully applied for bioaugmented treatment of municipal wastewater in a pilot-scale SBR. At an appropriate COD/N ratio of 8, the bioaugmentation system exhibited stable and excellent carbon and nutrients removal, the averaged effluent concentrations of COD, NH4(+)-N, TN and TP were 20.6, 0.69, 14.1 and 0.40 mg/L, respectively, which could meet the first class requirement of the National Municipal Wastewater Discharge Standards of China (COD<50 mg/L, TN<15 mg/L, TP<0.5 mg/L). Clone library and real-time PCR analysis revealed that the introduced bacteria greatly improved the structure of original microbial community and facilitated their aerobic nutrients removal capacities. The proposed emerging technology was shown to be an alternative technology to establish new wastewater treatment systems and upgrade or retrofit conventional systems from secondary-level to tertiary-level.
authors.affiliation: Department of Environmental Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Department of Environmental Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China. Electronic address: jinrenni@pku.edu.cn.
authors.forename: Jinren
authors.initials: J
authors.lastname: Ni
authors.affiliation: Department of Environmental Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Ma
authors.affiliation: Department of Environmental Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
authors.forename: Tang
authors.initials: T
authors.lastname: Liu
authors.affiliation: Department of Environmental Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
authors.forename: Maosheng
authors.initials: M
authors.lastname: Zheng
mesh_terms: D064751:Ammonium Compounds / Q000302:isolation & purification; D001420:Bacteria, Aerobic / Q000187:drug effects / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D002244:Carbon / Q000494:pharmacology; D002681:China; D002947:Cities; D052836:Heterotrophic Processes / Q000187:drug effects; D009584:Nitrogen / Q000302:isolation & purification*; D010802:Phylogeny; D010865:Pilot Projects; D019802:Succinic Acid / Q000494:pharmacology; D013997:Time Factors; D062065:Wastewater / Q000382:microbiology*; D018508:Water Purification / Q000379:methods*
chemical_list: D064751:Ammonium Compounds; D002244:Carbon; D009584:Nitrogen; D019802:Succinic Acid; D062065:Wastewater
keywords: 16S rRNA gene libarary; Bioaugmentation; Heterotrophic-aerobic nitrogen removal bacteria; Municipal wastewater treatment; Nutrients removal