期刊
REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY
卷 14, 期 3, 页码 453-472出版社
SPRINGER
DOI: 10.1007/s11157-015-9368-4
关键词
Fenton pre-treatment; Sludge biodegradability; Sludge dewaterability; Anaerobic digestion
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [A4984]
- Natural Sciences and Engineering Research Council of Canada (NSERC) (Canada Research Chair)
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.
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