Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | Third International Symposium on Energy from Biomass and Waste, Venice 2010 |
| Publisher | Cisa Publisher |
| ISBN (Print) | 978-8-8626-5008-3 |
| Publication status | Published - 2010 |
| MoE publication type | A4 Article in a conference publication |
| Event | Third International Symposium on Energy from Biomass and Waste, Venice 2010 - Venice , Italy Duration: 8 Nov 2010 → 11 Nov 2010 |
Conference
| Conference | Third International Symposium on Energy from Biomass and Waste, Venice 2010 |
|---|---|
| Abbreviated title | Venice 2010 |
| Country | Italy |
| City | Venice |
| Period | 8/11/10 → 11/11/10 |
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Keywords
- anaerobic digestion
- biogas
- sludge treatment
- sludge incineration
Cite this
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Optimised energy recovery from wastewater sludge. / Merta, Elina; Arnold, Mona.
Proceedings: Third International Symposium on Energy from Biomass and Waste, Venice 2010. Cisa Publisher, 2010.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - Optimised energy recovery from wastewater sludge
AU - Merta, Elina
AU - Arnold, Mona
N1 - Project code: 30875
PY - 2010
Y1 - 2010
N2 - The paper presents a case-based comparison of energy balances and costs of municipal wastewater sludge process chains based on anaerobic digestion or incineration. In chains based on anaerobic digestion, several biogas utilisation options were studied. In addition, the potential of enhancing anaerobic digestion e.g. by converting the process to thermophilic was studied. Based on the results, sludge incineration was the most expensive option of the studied scenarios, but justified if the heat generated can be utilised in district heating. However, the electricity balances in both incineration and anaerobic digestion are close to one another. If anaerobic digestion is used, both from an economical and energy point of view, the best option is to feed the generated biogas to a gas engine to produce electricity and heat. Based on the calculations, thermophilic anaerobic digestion can improve the economy of a WWTP provided that the biogas yield is sufficiently higher than in a mesophilic process.
AB - The paper presents a case-based comparison of energy balances and costs of municipal wastewater sludge process chains based on anaerobic digestion or incineration. In chains based on anaerobic digestion, several biogas utilisation options were studied. In addition, the potential of enhancing anaerobic digestion e.g. by converting the process to thermophilic was studied. Based on the results, sludge incineration was the most expensive option of the studied scenarios, but justified if the heat generated can be utilised in district heating. However, the electricity balances in both incineration and anaerobic digestion are close to one another. If anaerobic digestion is used, both from an economical and energy point of view, the best option is to feed the generated biogas to a gas engine to produce electricity and heat. Based on the calculations, thermophilic anaerobic digestion can improve the economy of a WWTP provided that the biogas yield is sufficiently higher than in a mesophilic process.
KW - anaerobic digestion
KW - biogas
KW - sludge treatment
KW - sludge incineration
M3 - Conference article in proceedings
SN - 978-8-8626-5008-3
BT - Proceedings
PB - Cisa Publisher
ER -