Biosolids as Gel-Like Materials: From Theory to Practical Applications

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Abstract:

This paper describes a new approach to the description of biosolids, based on recent insights into their underlying physical and chemical characteristics. This approach departs from the common paradigm of assuming that biosolids may best be modeled as a flocculated or fractal suspension with a rigid sphere substructure. Using the insight that biosolids may also be understood as a gel (at least in part), theoretical approaches taken from gel theory (developed, for example, in food and cosmetic sciences) are applied to biosolids, to provide new insights into the mechanisms underlying conditioning and dewaterability. These insights provide practical applications, exemplified in this paper.

Keywords: biosolids; conditioning; dewatering; flocculation; gel

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864709793956824

Publication date: January 1, 2009

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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