期刊
ENERGIES
卷 12, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/en12152940
关键词
high-rate anaerobic digestion; granular sludge; disintegration; hydrolysis; suspended solids; particulates
资金
- Interreg BioGas2020
- Research Council of Norway [269444]
Granular sludge bed (GSB) anaerobic digestion (AD) is a well-established method for efficient wastewater treatment, limited, however, by the wastewater particle content. This review is carried out to investigate how and to what extent feed particles influence GSB to evaluate the applicability of GSB to various types of slurries that are abundantly available. Sludge bed microorganisms evidently have mechanisms to retain feed particles for digestion. Disintegration and hydrolysis of such particulates are often the rate-limiting steps in AD. GSB running on particle-rich substrates and factors that affect these processes are stdied especially. Disintegration and hydrolysis models are therefore reviewed. How particles may influence other key processes within GSB is also discussed. Based on this, limitations and strategies for effective digestion of particle-rich substrates in high-rate AD reactors are evaluated.
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