Applications of Variable Environmental Conditions on Biological Sludge Production in Wastewater Treatment

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The recent advent of sludge reduction technologies that are capable of significantly reducing sludge production from wastewater treatment facilities has garnered much interest from the wastewater treatment industry. The physical and chemical methods are relatively simple to understand, but the biological mechanisms appear to be more complex. Biological sludge reduction methods, such as those used in the Cannibal process and in advanced digestion process, appear to have similarities in how they achieve additional solids reduction. All appear to rely on the application of changing environmental conditions on the sludge. Cannibal uses an aerobic/anaerobic change, and advanced digestion often uses changing pH, temperature or anaerobic/aerobic processing.

This hypothesis is based upon the concept that biological decay products are normally those components of a cell that are grown to protect it in a certain environmental condition, i.e. cell walls. The biomass does not need such protection from an environment that it was not grown in.

Document Type: Research Article


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 These proceedings are not peer reviewed.

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