Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production

The conventional biological processes for municipal wastewater are facing the challenges of high energy consumption and production of excessive sludge. To address these two emerging issues, this study demonstrated the feasibility to integrate mainstream anammox into an A-2B process for municipal was...

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Main Authors: Gu, Jun, Yang, Qin, Liu, Yu
Other Authors: School of Civil and Environmental Engineering
Format: Journal Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/138883
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author Gu, Jun
Yang, Qin
Liu, Yu
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Gu, Jun
Yang, Qin
Liu, Yu
author_sort Gu, Jun
collection NTU
description The conventional biological processes for municipal wastewater are facing the challenges of high energy consumption and production of excessive sludge. To address these two emerging issues, this study demonstrated the feasibility to integrate mainstream anammox into an A-2B process for municipal wastewater treatment towards energy-efficient operation with reduced sludge production. In the proposed A-2B process, an anaerobic fixed bed reactor (AFBR) served as A-stage for COD capture, an anammox moving bed biofilm reactor (MBBR) was employed as B2-stage, which received effluent containing nitrite from a sequencing batch reactor (SBR) at B1-stage. The results showed that under the operation conditions studied, 58% of influent COD was converted methane gas at A-stage, and 87% total inorganic nitrogen (TIN) removal was achieved with the effluent TIN concentration of 6.5 mg/L. Moreover, it was shown that at least 75% of sludge reduction was obtained due to the COD capture at A-stage. The high-throughput sequencing analysis further revealed that Candidatus Kuenenia was the dominant genus responsible for the observed anammox at B2-stage MBBR. This study clearly demonstrated a novel process configuration for sustaining mainstream anammox for municipal wastewater reclamation towards energy-efficient operation with minimized sludge production.
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spelling ntu-10356/1388832020-05-13T08:40:19Z Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production Gu, Jun Yang, Qin Liu, Yu School of Civil and Environmental Engineering Interdisciplinary Graduate School (IGS) Advanced Environmental Biotechnology Centre Nanyang Environment and Water Research Institute Engineering::Civil engineering A-2B Process Mainstream Anammox The conventional biological processes for municipal wastewater are facing the challenges of high energy consumption and production of excessive sludge. To address these two emerging issues, this study demonstrated the feasibility to integrate mainstream anammox into an A-2B process for municipal wastewater treatment towards energy-efficient operation with reduced sludge production. In the proposed A-2B process, an anaerobic fixed bed reactor (AFBR) served as A-stage for COD capture, an anammox moving bed biofilm reactor (MBBR) was employed as B2-stage, which received effluent containing nitrite from a sequencing batch reactor (SBR) at B1-stage. The results showed that under the operation conditions studied, 58% of influent COD was converted methane gas at A-stage, and 87% total inorganic nitrogen (TIN) removal was achieved with the effluent TIN concentration of 6.5 mg/L. Moreover, it was shown that at least 75% of sludge reduction was obtained due to the COD capture at A-stage. The high-throughput sequencing analysis further revealed that Candidatus Kuenenia was the dominant genus responsible for the observed anammox at B2-stage MBBR. This study clearly demonstrated a novel process configuration for sustaining mainstream anammox for municipal wastewater reclamation towards energy-efficient operation with minimized sludge production. 2020-05-13T08:40:18Z 2020-05-13T08:40:18Z 2018 Journal Article Gu, J., Yang, Q., & Liu, Y. (2018). Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production. Water research, 138, 1-6. doi:10.1016/j.watres.2018.02.051 0043-1354 https://hdl.handle.net/10356/138883 10.1016/j.watres.2018.02.051 29554513 2-s2.0-85044474862 138 1 6 en Water research © 2018 Elsevier Ltd. All rights reserved.
spellingShingle Engineering::Civil engineering
A-2B Process
Mainstream Anammox
Gu, Jun
Yang, Qin
Liu, Yu
Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title_full Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title_fullStr Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title_full_unstemmed Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title_short Mainstream anammox in a novel A-2B process for energy-efficient municipal wastewater treatment with minimized sludge production
title_sort mainstream anammox in a novel a 2b process for energy efficient municipal wastewater treatment with minimized sludge production
topic Engineering::Civil engineering
A-2B Process
Mainstream Anammox
url https://hdl.handle.net/10356/138883
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AT yangqin mainstreamanammoxinanovela2bprocessforenergyefficientmunicipalwastewatertreatmentwithminimizedsludgeproduction
AT liuyu mainstreamanammoxinanovela2bprocessforenergyefficientmunicipalwastewatertreatmentwithminimizedsludgeproduction