Biosolids stabilization process

Abstract

A method utilizing chlorine dioxide and, optionally, and acid or other non-charged chemical species for the treatment of biosolids to destroy pathogens is provided. The method uses chlorine dioxide to modulate the ORP of the matrix. In one embodiment, the invention employs acidification of the sludge (biosolids) to a pH of less than 4.0, and provides for the addition of nitrous acid for enhanced disinfection in a closed system to prevent volitalization.

Dependencies are inferred from the claim text.