title: Quantitative analysis of ammonia-oxidizing bacteria in a combined system of MBR and worm reactors treating synthetic wastewater.
abstract: The Static Sequencing Batch Worm Reactor (SSBWR) followed by the MBR (S-MBR) is one of the advanced excess sludge treatments. In this paper, the control MBR (C-MBR) and the SSBWR-MBR were operated in parallel to study the changes of NH3-N removal and ammonia oxidizing bacteria (AOB). The results showed that the capacity of NH3-N removal of the S-MBR was improved by the worm reactors along with the operation. The S-MBR was favorable because it selected for the higher activity of the ammonia oxidization and better cells appearance of the sludge. The five species (Nitrosomonas, Betaproteobacteria, Clostridium, Dechloromonas and Bacteria) were found to be significantly correlate with the ammonia oxidization functions and performance of NH3-N removal in the C-MBR and S-MBR. The Nitrosomonas, Betaproteobacteria and Dechloromonas remained and eventually enriched in the S-MBR played a primary role in the NH3-N removal of the S-MBR.
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150090, China; School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: hittianyu@163.com.
authors.forename: Yu
authors.initials: Y
authors.lastname: Tian
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Dezhen
authors.initials: D
authors.lastname: Wang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yaobin
authors.initials: Y
authors.lastname: Lu
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zuo
mesh_terms: D000641:Ammonia / Q000302:isolation & purification / Q000378:metabolism*; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology* / Q000469:parasitology*; D058645:Denaturing Gradient Gel Electrophoresis; D006376:Helminths / Q000378:metabolism*; D008567:Membranes, Artificial; D009584:Nitrogen / Q000302:isolation & purification; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis; D012722:Sewage / Q000382:microbiology; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000382:microbiology* / Q000469:parasitology; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D000641:Ammonia; D008567:Membranes, Artificial; D009584:Nitrogen; D010100:Oxygen; D012722:Sewage; D062065:Wastewater
keywords: Ammonia-oxidizing bacteria (AOB); Ammonia-oxidizing bacterial activity (AOA); NH(3)-N removal