Understanding the mechanisms of thermal disintegrating treatment in the reduction of sludge production

Autor:	J. M. Audic, P. Ginestet, P. Camacho
Rok vydání:	2005
Předmět:	chemistry.chemical_classification Inert Environmental Engineering Waste management Thermal treatment Biodegradation Activated sludge chemistry Wastewater Scientific method Production (economics) Environmental science Organic matter Water Science and Technology
Zdroj:	Water Science and Technology. 52:235-245
ISSN:	1996-9732 0273-1223
DOI:	10.2166/wst.2005.0699
Popis:	Among the technologies aimed at reducing sludge production, the combination of thermal treatment at 95°C of sludge and the activated sludge process is a promising route. The feasibility of such a combined process is demonstrated (up to 60% sludge reduction) and the impacts of operating conditions on its efficiency are presented. Major emphasis was put on understanding the complex phenomena occurring within the thermal treatment: release and biodegradability of sludge organic matter, impact on the biological activity (decay, maintenance requirements, etc.). These effects were taken into account for the development of an ASM1-based model. Comparison between the modeling approach and experimental data (continuous and batch) showed that thermal treatment had three major issues partly explaining the reduction of sludge production: (i) a low release of organics; (ii) an immediate and reversible biological inactivation associated with additional maintenance energy requirements; and (iii) a potential inert production.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::011662eb9209694cd2a8d9077eecc0b6 https://doi.org/10.2166/wst.2005.0699 Zobrazit plný text záznamu