DOI: 10.1016/j.watres.2018.02.035
Scopus记录号: 2-s2.0-85042229015
论文题名: Bioaugmentation of sidestream nitrifying-denitrifying phosphorus-accumulating granules in a low-SRT activated sludge system at low temperature
作者: Figdore B.A. ; David Stensel H. ; Winkler M.-K.H.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 135 起始页码: 241
结束页码: 250
语种: 英语
英文关键词: Aerobic granular sludge
; Centrate
; Enhanced biological phosphorus removal
; Nitrification
; Reject water
Scopus关键词: Activated sludge process
; Biological water treatment
; Denitrification
; Dewatering
; Effluents
; Granulation
; Nitrates
; Nitrification
; Nitrogen removal
; Phosphorus
; Temperature
; Wastewater treatment
; Activated sludge systems
; Aerobic granular sludges
; Centrate
; Enhanced biological phosphorus removal
; Nitrification performance
; Phosphorus accumulating
; Reject waters
; Short-cut nitrogen removals
; Chemicals removal (water treatment)
; ammonia
; nitrate
; nitrite
; nitrogen
; nitric acid derivative
; phosphorus
; activated sludge
; Article
; denitrification
; heterotroph
; microbial community
; nitrification
; nitrifyer
; nonhuman
; oxidation
; priority journal
; temperature
; bioreactor
; chemistry
; cold
; denitrification
; devices
; flocculation
; genetics
; metabolism
; microbial consortium
; microbiology
; nitrification
; physiology
; procedures
; sewage
; Ammonia
; Bioreactors
; Cold Temperature
; Denitrification
; Flocculation
; Microbial Consortia
; Nitrates
; Nitrification
; Nitrites
; Nitrogen
; Phosphorus
; Sewage
; Temperature
; Waste Disposal, Fluid
英文摘要: Sidestream granular activated sludge grown on anaerobic digester dewatering centrate was bioaugmented and selectively retained to enable high nitrification performance of a 2.5-day aerobic SRT non-nitrifying flocculent activated sludge system at 12 °C. Sidestream-grown granules performed enhanced biological phosphorus removal (EBPR) and short-cut nitrogen removal via nitrite. After bioaugmentation, EBPR continued in the mainstream but ammonia oxidation was eventually to nitrate. Low effluent NH3-N concentrations from 0.6 to 1.7 mg/L were achieved with nitrification solely by granules, thus enabling denitrification and nitrogen removal. Molecular microbial analyses of flocs and granules also suggested that nitrifying organisms persisted on granules with minimal nitrifier loss to flocs. Mainstream granule mass at the end of bioaugmentation testing was 1.7 times the amount of sidestream granules added, indicating mainstream granular growth. Nitrite and nitrate availability during the unaerated feeding period encouraged significant growth of ordinary heterotrophs in mainstream granules, but nevertheless mainstream nitrification capacity was sustained. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112882
Appears in Collections: 气候减缓与适应
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作者单位: Civil and Environmental Engineering, University of Washington, 201 More Hall, Seattle, WA 98195, United States
Recommended Citation:
Figdore B.A.,David Stensel H.,Winkler M.-K.H.. Bioaugmentation of sidestream nitrifying-denitrifying phosphorus-accumulating granules in a low-SRT activated sludge system at low temperature[J]. Water Research,2018-01-01,135