DOI: 10.1016/j.watres.2018.01.004
Scopus记录号: 2-s2.0-85040333909
论文题名: Using mass struvite precipitation to remove recalcitrant nutrients and micropollutants from anaerobic digestion dewatering centrate
作者: Abel-Denee M. ; Abbott T. ; Eskicioglu C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 132 起始页码: 292
结束页码: 300
语种: 英语
英文关键词: Anaerobic digestion
; Dissolved organic nitrogen
; Micropollutant
; Non-reactive dissolved phosphorus
; Sidestream
; Struvite
Scopus关键词: Dewatering
; Dissolution
; Nitrogen
; Nitrogen removal
; Nucleation
; Nutrients
; Phosphorus
; Precipitation (chemical)
; Sludge digestion
; Wastewater treatment
; Dissolved organic nitrogen
; Dissolved phosphorus
; Micropollutants
; Side streams
; Struvites
; Anaerobic digestion
; ammonia
; nitrogen
; organic nitrogen
; organophosphorus compound
; phosphate
; phosphorus
; polyphosphate
; struvite
; anaerobic digestion
; dewatering
; dissolved organic nitrogen
; nucleation
; nutrient
; organic pollutant
; pollutant removal
; precipitation (chemistry)
; sludge
; stream
; struvite
; temperature
; wastewater treatment plant
; activated sludge
; anaerobic digestion
; Article
; biosolid
; comparative study
; crystallization
; hydrolysis
; methanogenesis
; nutrient
; pH
; photon correlation spectroscopy
; precipitation
; priority journal
; recalcitrant nutrient
; retention time
; sewage effluent
; sludge dewatering
; suspended particulate matter
; turbidity
; waste water treatment plant
; water pollutant
; winter
英文摘要: The primary objective of this research was to remove recalcitrant nutrients from anaerobically digested sludge dewatering centrate. A struvite precipitation methodology is proposed where salt crystals are encouraged to ballast colloidal particles through heterogeneous nucleation and subsequent crystal growth. The secondary objective was to assess presence of micropollutants in precipitates. Four biologically unique dewatering centrates were used to test the precipitation methodology on the variety of anaerobic digester configurations that can be expected from municipal wastewater treatment plant. The effect of digestion sludge retention time (2 day, 20 day) and digestion temperature (35 °C, 55 °C) on the removal of dissolved unreactive phosphorus (P) and nitrogen (N) was monitored. Averaged across all four centrates, the precipitation methodology resulted in dissolved unreactive P and N removal of 82.4% and 66.6%, respectively. Antimicrobial contaminants (triclosan, triclocarban) were observed in the precipitates at minute concentrations (<18 ng/g-dry solids). Therefore, mass struvite precipitation can provide a means of recalcitrant nutrient treatment and reactive nutrient recovery without the micropollutant burden of biosolids land application. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112972
Appears in Collections: 气候减缓与适应
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作者单位: UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 1137 Alumni Avenue, Kelowna, BC V1V 1V7, Canada
Recommended Citation:
Abel-Denee M.,Abbott T.,Eskicioglu C.. Using mass struvite precipitation to remove recalcitrant nutrients and micropollutants from anaerobic digestion dewatering centrate[J]. Water Research,2018-01-01,132