title: Startup and long term operation of enhanced biological phosphorus removal in continuous-flow reactor with granules.
abstract: The startup and long term operation of enhanced biological phosphorus removal (EBPR) in a continuous-flow reactor (CFR) with granules were investigated in this study. Through reducing the settling time from 9min to 3min gradually, the startup of EBPR in a CFR with granules was successfully realized in 16days. Under continuous-flow operation, the granules with good phosphorus and COD removal performance were stably operated for more than 6months. And the granules were characterized with particle size of around 960μm, loose structure and good settling ability. During the startup phase, polysaccharides (PS) was secreted excessively by microorganisms to resist the influence from the variation of operational mode. Results of relative quantitative PCR indicated that granules dominated by polyphosphate-accumulating organisms (PAOs) were easier accumulated in the CFR because more excellent settling ability was needed in the system.
authors.affiliation: Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China. Electronic address: lidong2006@bjut.edu.cn.
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.affiliation: Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China. Electronic address: lyf4992223@163.com.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Lv
authors.affiliation: Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China.
authors.forename: Huiping
authors.initials: H
authors.lastname: Zeng
authors.affiliation: Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
mesh_terms: D001673:Biodegradation, Environmental; D057919:Biological Oxygen Demand Analysis; D001704:Biopolymers / Q000737:chemistry; D019149:Bioreactors; D052918:Environmental Restoration and Remediation / Q000295:instrumentation* / Q000379:methods*; D010316:Particle Size; D010758:Phosphorus / Q000302:isolation & purification*; D016133:Polymerase Chain Reaction; D011122:Polyphosphates / Q000378:metabolism; D011134:Polysaccharides / Q000032:analysis; D011506:Proteins / Q000032:analysis; D012212:Rheology; D012722:Sewage / Q000737:chemistry*; D013997:Time Factors
chemical_list: D001704:Biopolymers; D011122:Polyphosphates; D011134:Polysaccharides; D011506:Proteins; D012722:Sewage; D010758:Phosphorus
keywords: Continuous-flow reactor; Enhanced biological phosphorus removal; Granules; Long term operation; Startup