DOI: 10.1016/j.watres.2018.06.037
Scopus记录号: 2-s2.0-85053045827
论文题名: Supernatant organics from anaerobic digestion after thermal hydrolysis cause direct and/or diffusional activity loss for nitritation and anammox
作者: Zhang Q. ; Vlaeminck S.E. ; DeBarbadillo C. ; Su C. ; Al-Omari A. ; Wett B. ; Pümpel T. ; Shaw A. ; Chandran K. ; Murthy S. ; De Clippeleir H.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 270
结束页码: 281
语种: 英语
英文关键词: Biological nutrient removal
; Partial nitrification/anammox
; Water resources recovery facility
Scopus关键词: Activated carbon
; Activated carbon treatment
; Aerobic bacteria
; Colloids
; Dewatering
; Hydrolysis
; Nitrogen removal
; Sewage sludge
; Sludge digestion
; Wastewater treatment
; Ammonium oxidizing bacteria
; Anaerobic incubation
; Autotrophic nitrogen removal
; Biological nutrient removal
; Colloidal fractions
; Flocculant polymers
; Partial nitrification
; Thermal hydrolysis process
; Anaerobic digestion
; anaerobic digestion
; bacterium
; biogas
; biological method
; dewatering
; hydrolysis
; incubation
; inhibition
; pollutant removal
; polymer
; sewage
; sludge
英文摘要: Treatment of sewage sludge with a thermal hydrolysis process (THP) followed by anaerobic digestion (AD) enables to boost biogas production and minimize residual sludge volumes. However, the reject water can cause inhibition to aerobic and anoxic ammonium-oxidizing bacteria (AerAOB & AnAOB), the two key microbial groups involved in the deammonification process. Firstly, a detailed investigation elucidated the impact of different organic fractions present in THP-AD return liquor on AerAOB and AnAOB activity. For AnAOB, soluble compounds linked to THP conditions and AD performance caused the main inhibition. Direct inhibition by dissolved organics was also observed for AerAOB, but could be overcome by treating the filtrate with extended aerobic or anaerobic incubation or with activated carbon. AerAOB additionally suffered from particulate and colloidal organics limiting the diffusion of substrates. This was resolved by improving the dewatering process through an optimized flocculant polymer dose and/or addition of coagulant polymer to better capture the large colloidal fraction, especially in case of unstable AD performance. Secondly, a new inhibition model for AerAOB included diffusion-limiting compounds based on the porter-equation, and achieved the best fit with the experimental data, highlighting that AerAOB were highly sensitive to large colloids. Overall, this paper for the first time provides separate identification of organic fractions within THP-AD filtrate causing differential types of inhibition. Moreover, it highlights the combined effect of the performance of THP, AD and dewatering on the downstream autotrophic nitrogen removal kinetics. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112585
Appears in Collections: 气候减缓与适应
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作者单位: DC Water, 5000 Overlook Ave. SW, Washington, DC 20032, United States; Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Gent, 9000, Belgium; Department of Earth and Environmental Engineering, Columbia University, 500 West 120th Street, New York, United States; Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, Antwerpen, 2020, Belgium; ARAconsult, Unterbergerstr.1, Innsbruck, A-6020, Austria; Institut für Mikrobiologie, Technikerstr. 25, Innsbruck, A-6020, Austria; Black & Veatch, 8400 Ward Parkway, Kansas City, MO 64114, United States
Recommended Citation:
Zhang Q.,Vlaeminck S.E.,DeBarbadillo C.,et al. Supernatant organics from anaerobic digestion after thermal hydrolysis cause direct and/or diffusional activity loss for nitritation and anammox[J]. Water Research,2018-01-01,143