Estimation of Energy Recovery Potential from Primary Residues of Four Municipal Wastewater Treatment Plants
| Autor: | Eleni P. Tsiakiri, Christos A. Tzenos, Sotirios D. Kalamaras, Thomas Kotsopoulos, Ioannis Lemonidis, Petros Samaras, Aikaterini Mpougali |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
anaerobic digestion
fats 020209 energy Geography Planning and Development TJ807-830 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law TD194-195 01 natural sciences Renewable energy sources Biogas biogas potential 0202 electrical engineering electronic engineering information engineering Organic matter GE1-350 Effluent wastewater treatment plant 0105 earth and related environmental sciences chemistry.chemical_classification Energy recovery screenings Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Pulp and paper industry Environmental sciences Anaerobic digestion Wastewater chemistry Available energy Environmental science Sewage treatment energy utilization |
| Zdroj: | Sustainability, Vol 13, Iss 7198, p 7198 (2021) Sustainability Volume 13 Issue 13 |
| ISSN: | 2071-1050 |
| Popis: | Wastewater treatment plants have been traditionally developed for the aerobic degradation of effluent organic matter, and are associated with high energy consumption. The adoption of sustainable development targets favors the utilization of every available energy source, and the current work aims at the identification of biomethane potential from non-conventional sources derived from municipal wastewater treatment processes. Byproducts derived from the primary treatment process stage were collected from four sewage treatment plants in Greece with great variation in design capacity and servicing areas with wide human activities, affecting the quality of the influents and the corresponding primary wastes. The samples were characterized for the determination of their solids and fats content, as well as the concentration of leached organic matter and nutrients, and were subjected to anaerobic digestion treatment for the measurement of their biomethane production potential according to standardized procedures. All samples exhibited potential for biogas utilization, with screenings collected from a treatment plant receiving wastewater from an area with combined rural and agro-industrial activities presenting the highest potential. Nevertheless, these samples had a methanogens doubling time of around 1.3 days, while screenings from a high-capacity unit proved to have a methanogens doubling time of less than 1 day. On the other hand, floatings from grit chambers presented the smallest potential for energy utilization. Nevertheless, these wastes can be utilized for energy production, potentially in secondary sludge co-digestion units, converting a treatment plant from an energy demanding to a zero energy or even a power production process. |
| Databáze: | OpenAIRE |
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