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Anaerobically digested blackwater treatment by simultaneous denitrification and anammox processes: Feeding loading affects reactor performance and microbial community succession

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Feb 2020 Australia Publisher:Elsevier BVJournal:Chemosphere, volume 241, page 125,101 (issn: 0045-6535,

Authors: Yun Zhou; Bing Guo; Lei Zhang; Xin Zou; Sen Yang; Huixin Zhang; Siqing Xia; +1 Authors

doi: 10.1016/j.chemosphere.2019.125101

pmid: 31683431

Anaerobically digested blackwater treatment by simultaneous denitrification and anammox processes: Feeding loading affects reactor performance and microbial community succession

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Abstract

Source diverted blackwater collected from toilets can be anaerobically digested to recover energy. The anaerobically digested blackwater (ADB) contains high levels of ammonium and low carbon to nitrogen (C/N) ratio. In the present study, ADB was treated by a two-stage nitritation-denitrification/anammox process in an integrated fixed film activated sludge-continuous flow reactor (IFAS-CFR). NH4+-N, NO2--N, total nitrogen (TN), and chemical oxygen demand (COD) removal efficiencies were 80%, 82%, 76%, and 78%, respectively. Anaerobic ammonium oxidation (anammox) and denitrification contributed to 44-48%, and 52-56% of total nitrogen removal, respectively. Both of the protein- and humic acid-like matters were removed during the process. An increase in feed load promoted the sustained growth of anammox bacteria-Candidatus Brocadia in the biofilm, as well as an increase of denitrifiers (Pseudomonas, Thermotonus, Phodanobacter, Caulobacter) in both biofilm and suspended biomass, which remained higher in the suspended biomass than in biofilm. Overall, biofilm had higher nitrogen removal efficiency than suspended biomass, while suspended biomass had a higher COD removal efficiency than biofilm.

Country

Australia

Related Organizations

University of Alberta
Canada
Queensland University of Technology
Australia
State Key Laboratory of Pollution Control and Resource Reuse
China (People's Republic of)
State Key Laboratory of Pollution Control and Resource Reuse
China (People's Republic of)
Tongji University
China (People's Republic of)

Keywords

Biological Oxygen Demand Analysis, 570, High-throughput sequencing, Bacteria, Sewage, Nitrogen, Microbiota, Water Purification, Anammox, Bioreactors, Fluorescence regional integration (FRI), Biofilms, Ammonium Compounds, Denitrification, Anaerobiosis, Biomass, Anaerobically digested blackwater (ADB)

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
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