Mesophilic and thermophilic anaerobic co-digestion of waste activated sludge and source sorted biowaste in pilot- and full-scale reactors
The paper presents the results of a pilot- and full-scale experimental campaign on the anaerobic co-digestion of waste activated sludge and biowaste both in mesophilic and thermophilic conditions. The study demonstrated the possibility to increase the specific biogas production from 0.34 to 0.49 m3/kgTVS and the gas production rate from 0.53 to 0.78 m3per m3 of reactor per day changing the reactor temperature from the mesophilic (37 °C) to the thermophilic (55 °C) range. The experimental work was carried out at pilot-scale, and the results match the full-scale behaviour. Ammonia nitrogen recycled from the anaerobic digestion section to the wastewater treatment plant accounted for about 4% of the total nitrogen loading. Digestate characteristics in terms of biological stability and heavy metals content suggested the opportunity of a short time post-aerobic stabilisation, leading to a high quality compost product.
Year of publication: |
2013
|
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Authors: | Cavinato, Cristina ; Bolzonella, David ; Pavan, Paolo ; Fatone, Francesco ; Cecchi, Franco |
Published in: |
Renewable Energy. - Elsevier, ISSN 0960-1481. - Vol. 55.2013, C, p. 260-265
|
Publisher: |
Elsevier |
Subject: | Anaerobic co-digestion | Biowaste | Waste activated sludge | Mesophilic | Thermophilic |
Saved in:
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