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Title: The S.An.A.® concept: Semi-aerobic, Anaerobic, Aerated bioreactor landfill

Abstract

Highlights: • Sustainable Hybrid bioreactor landfill lab-scale application. • Semi-aerobic, Anaerobic, Aerated (S.An.A.®) concept. • Enhancement of methane production and biochemical processes. • Aeration and flushing for reaching Final Storage Quality. - Abstract: Hybrid Bioreactor Landfills are designed to enhance and speed up biological processes, aiming at reducing the duration of post operational phase until landfill completion. S.An.A.®(Semi-aerobic, Anaerobic, Aerated) concept consists in a Hybrid Bioreactor featuring a first semi-aerobic phase to enhance the methane production occurring in the following anaerobic step and a forced aeration for the abatement of the residual emissions. At the end of the last step, semi-aerobic conditions are restored and flushing applied for leaching residual non-biodegradable compounds. Results of the application of S.An.A.® concept to a lab scale bioreactor system showed that pre-aeration was effective in controlling the concentration of VFA, increasing pH and stimulating methane production during anaerobic phase; in particular with intermittent airflow the methane potential was 50% higher respect to control reactors. Forced aeration reduced organic compounds and nitrogen concentration in leachate of an order of magnitude, better performing in low airflow reactors. S.An.A.® Hybrid bioreactors proved to be an efficient system both for increasing methane production and reaching landfill completion inmore » shorter time, suggesting that with proper landfill management, the duration of post-closure care might be reduced by 25–35%.« less

Authors:
 [1]; ; ;  [2]; ;  [3];  [2]
  1. ICEA, Department of Civil, Architectural and Environmental Engineering, University of Padova, Via Marzolo 9, 35131 Padova (Italy)
  2. DII, Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova (Italy)
  3. School of Environment, Tsinghua University, Beijing 100084 (China)
Publication Date:
OSTI Identifier:
22742119
Resource Type:
Journal Article
Journal Name:
Waste Management
Additional Journal Information:
Journal Volume: 67; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0956-053X
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; AERATION; AIR FLOW; BIOREACTORS; HYBRIDIZATION; METHANE; SANITARY LANDFILLS; WASTE PROCESSING; WASTES

Citation Formats

Morello, Luca, Raga, Roberto, Lavagnolo, Maria Cristina, Pivato, Alberto, Ali, Munawar, Yue, Dongbei, and Cossu, Raffaello. The S.An.A.® concept: Semi-aerobic, Anaerobic, Aerated bioreactor landfill. United States: N. p., 2017. Web. doi:10.1016/J.WASMAN.2017.05.006.
Morello, Luca, Raga, Roberto, Lavagnolo, Maria Cristina, Pivato, Alberto, Ali, Munawar, Yue, Dongbei, & Cossu, Raffaello. The S.An.A.® concept: Semi-aerobic, Anaerobic, Aerated bioreactor landfill. United States. doi:10.1016/J.WASMAN.2017.05.006.
Morello, Luca, Raga, Roberto, Lavagnolo, Maria Cristina, Pivato, Alberto, Ali, Munawar, Yue, Dongbei, and Cossu, Raffaello. Fri . "The S.An.A.® concept: Semi-aerobic, Anaerobic, Aerated bioreactor landfill". United States. doi:10.1016/J.WASMAN.2017.05.006.
@article{osti_22742119,
title = {The S.An.A.® concept: Semi-aerobic, Anaerobic, Aerated bioreactor landfill},
author = {Morello, Luca and Raga, Roberto and Lavagnolo, Maria Cristina and Pivato, Alberto and Ali, Munawar and Yue, Dongbei and Cossu, Raffaello},
abstractNote = {Highlights: • Sustainable Hybrid bioreactor landfill lab-scale application. • Semi-aerobic, Anaerobic, Aerated (S.An.A.®) concept. • Enhancement of methane production and biochemical processes. • Aeration and flushing for reaching Final Storage Quality. - Abstract: Hybrid Bioreactor Landfills are designed to enhance and speed up biological processes, aiming at reducing the duration of post operational phase until landfill completion. S.An.A.®(Semi-aerobic, Anaerobic, Aerated) concept consists in a Hybrid Bioreactor featuring a first semi-aerobic phase to enhance the methane production occurring in the following anaerobic step and a forced aeration for the abatement of the residual emissions. At the end of the last step, semi-aerobic conditions are restored and flushing applied for leaching residual non-biodegradable compounds. Results of the application of S.An.A.® concept to a lab scale bioreactor system showed that pre-aeration was effective in controlling the concentration of VFA, increasing pH and stimulating methane production during anaerobic phase; in particular with intermittent airflow the methane potential was 50% higher respect to control reactors. Forced aeration reduced organic compounds and nitrogen concentration in leachate of an order of magnitude, better performing in low airflow reactors. S.An.A.® Hybrid bioreactors proved to be an efficient system both for increasing methane production and reaching landfill completion in shorter time, suggesting that with proper landfill management, the duration of post-closure care might be reduced by 25–35%.},
doi = {10.1016/J.WASMAN.2017.05.006},
journal = {Waste Management},
issn = {0956-053X},
number = ,
volume = 67,
place = {United States},
year = {2017},
month = {9}
}