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Biogas production, sludge accumulation and mass balance of carbon in anaerobic ponds.
- Source :
- Water Science & Technology; 2003, Vol. 48 Issue 2, p243-250, 8p
- Publication Year :
- 2003
-
Abstract
- This work concerned the application of anaerobic ponds for the primary treatment of urban wastewater in a Mediterranean climate. It was carried out on anaerobic ponds at large scale in Mèze (France). The anaerobic ponds constitute a good primary treatment with the removal of 55% of SS and 30% of BOD<subscript>5</subscript>, with a small surface area. The accumulation rate of sludge was only 0.017 m³/capita.year, due to their intensive anaerobic degradation. The anaerobic digestion reached equilibrium after one year of operation. The accumulation of sludge then showed seasonal variations with a substantial accumulation in winter and the digestion of the stock in summer. This change can be related to the influence of the temperature on methanogenesis. The production of biogas (83% CH<subscript>4</subscript>) was measured by gas collectors especially developed for this study and was also strongly dependent on temperature. The mass balance of carbon showed that 74% of the removed organic carbon was converted into CH<subscript>4</subscript>, 13% into dissolved inorganic carbon and 15% was stored in sludge. However, the anaerobic ponds presented a risk of creating odor nuisances with the emission of H<subscript>2</subscript>S. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02731223
- Volume :
- 48
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Water Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 27024620
- Full Text :
- https://doi.org/10.2166/wst.2003.0127