Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions
Thermal hydrolysis pretreatment (THP), as a step prior to sludge anaerobic digestion (AD), is widely applied due to its effectiveness in enhancing organic solids hydrolysis and subsequent biogas productivity. However, THP also induces a series of problems including formation of refractory compounds...
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sg-ntu-dr.10356-1623802022-10-17T06:05:33Z Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions Yan, Wangwang Xu, Hui Lu, Dan Zhou, Yan School of Civil and Environmental Engineering Advanced Environmental Biotechnology Centre (AEBC) Nanyang Environment and Water Research Institute Engineering::Environmental engineering Sludge Pretreatment Refractory Compounds Thermal hydrolysis pretreatment (THP), as a step prior to sludge anaerobic digestion (AD), is widely applied due to its effectiveness in enhancing organic solids hydrolysis and subsequent biogas productivity. However, THP also induces a series of problems including formation of refractory compounds in THP cylinder, high residual ammonia and organic in the AD centrate, inhibition on downstream nitrogen removal process and reduction in UV-disinfection effectiveness during post-treatment. More attention should be paid on how to mitigate these negative effects. Despite intensive studies were carried out to reduce refractory compounds formation and enhance biological performance, there is limited effort to discuss the solutions to tackle the THP associated problems in a holistic manner. This paper summarizes the solutions developed to date and analyzes their technology readiness to assess application potential in full-scale settings. The content highlights the limitations of THP and proposes potential solutions to address the technological challenges. 2022-10-17T06:05:26Z 2022-10-17T06:05:26Z 2022 Journal Article Yan, W., Xu, H., Lu, D. & Zhou, Y. (2022). Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions. Bioresource Technology, 344(Pt B), 126248-. https://dx.doi.org/10.1016/j.biortech.2021.126248 0960-8524 https://hdl.handle.net/10356/162380 10.1016/j.biortech.2021.126248 34743996 2-s2.0-85118484568 Pt B 344 126248 en Bioresource Technology © 2021 Elsevier Ltd. All rights reserved. |
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Engineering::Environmental engineering Sludge Pretreatment Refractory Compounds Yan, Wangwang Xu, Hui Lu, Dan Zhou, Yan Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
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Thermal hydrolysis pretreatment (THP), as a step prior to sludge anaerobic digestion (AD), is widely applied due to its effectiveness in enhancing organic solids hydrolysis and subsequent biogas productivity. However, THP also induces a series of problems including formation of refractory compounds in THP cylinder, high residual ammonia and organic in the AD centrate, inhibition on downstream nitrogen removal process and reduction in UV-disinfection effectiveness during post-treatment. More attention should be paid on how to mitigate these negative effects. Despite intensive studies were carried out to reduce refractory compounds formation and enhance biological performance, there is limited effort to discuss the solutions to tackle the THP associated problems in a holistic manner. This paper summarizes the solutions developed to date and analyzes their technology readiness to assess application potential in full-scale settings. The content highlights the limitations of THP and proposes potential solutions to address the technological challenges. |
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School of Civil and Environmental Engineering |
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School of Civil and Environmental Engineering Yan, Wangwang Xu, Hui Lu, Dan Zhou, Yan |
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Article |
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Yan, Wangwang Xu, Hui Lu, Dan Zhou, Yan |
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Yan, Wangwang |
title |
Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
title_short |
Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
title_full |
Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
title_fullStr |
Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
title_full_unstemmed |
Effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
title_sort |
effects of sludge thermal hydrolysis pretreatment on anaerobic digestion and downstream processes: mechanism, challenges and solutions |
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2022 |
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https://hdl.handle.net/10356/162380 |
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1749179151574630400 |