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Overview of Fenton pre-treatment of sludge aiming to enhance anaerobic digestion.

Pilli, Sridhar; Yan, Song; Tyagi, Rajeshwar Dayal; Surampalli, Rao Y. (2015). Overview of Fenton pre-treatment of sludge aiming to enhance anaerobic digestion. Reviews in Environmental Science and Biotechnology , vol. 14 , nº 3. p. 453-472. DOI: 10.1007/s11157-015-9368-4.

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Résumé

Availability of the biodegradable matter in wastewater sludge limits the anaerobic digestion (AD) process efficiency. Therefore, sludge pre-treatment is required to increase sludge solid degradability and, in turn, AD efficiency. Advanced oxidation processes, particularly Fenton pre-treatment, are emerging as popular methods aiming to enhance sludge biodegradability. This review summarizes the major findings of Fenton pre-treatment application in sludge disintegration and dewaterability, and elucidates the impacts on both mesophilic and thermophilic digestion. Efforts are made to understand the effect of the Fenton pre-treatment of wastewater sludge on enhancing AD efficiency (increased biogas production and solids reduction) and outline the future research direction. A case study of mass–energy balance and greenhouse gas (GHG) emission computations for mesophilic and thermophilic digestion of control (without pre-treatment) and Fenton pre-treatment sludge at different sludge retention times is also illustrated.

Type de document: Article
Mots-clés libres: anaerobic digestion; fenton pre-treatment; sludge biodegradability; sludge dewaterability
Centre: Centre Eau Terre Environnement
Date de dépôt: 23 avr. 2018 18:19
Dernière modification: 23 avr. 2018 18:19
URI: http://espace.inrs.ca/id/eprint/3913

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