title: Biological phosphorus removal with nitrite as election acceptor.
abstract: Biological phosphorus removal was studied in a sequencing batch reactor (SBR). The results showed that nitrite could be used as electron acceptor in denitrifying phosphorus removal. Feed mode of nitrite had significant influence on denitrifying phosphorus removal. Anoxic phosphorus assimilation rate could reach 10.44 mgP/gSS.h and the percentage of anoxic phosphorus assimilation amount was more than 97% with continuous feed mode. Granular sludge with denitrifying phosphorus removal activity was found in the SBR. The effects of different operational conditions, such as COD loading, settling time, HRT etc., on the formation of granules were also studied.
authors.affiliation: School of Environmental Science and Engineering, Chang'an University, Xi'an, China. zhangxiaoling101@126.com
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhiying
authors.initials: Z
authors.lastname: Wang
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
mesh_terms: D001673:Biodegradation, Environmental; D009573:Nitrites / Q000737:chemistry*; D010084:Oxidation-Reduction; D010758:Phosphorus / Q000032:analysis*; D012722:Sewage / Q000737:chemistry / Q000382:microbiology; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
chemical_list: D009573:Nitrites; D012722:Sewage; D014874:Water Pollutants, Chemical; D010758:Phosphorus