Process for deodorizing sludge
AssigneeDegussa AG
InventorsHeinrich Schwab, Werner Kaschke
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Abstract
Sludge, especially sewage sludge is deodorized, particularly to obtain the biomass by treating the waste water sludge (pollution sludge) with an active oxygen developing compound at 5.degree. to 40.degree.C.
Claims20
A process of deodorizing a waste water sludge containing fermentation causing microorganism according to claim 17 consisting essentially of treating the waste water sludge at a temperature of 5 to 40.degree. C. and a pH of 5.0 to 7.0 with an active oxygen developing compound selected from the group consisting of alkali metal chlorites and alkaline earth metal chlorites in an amount sufficient to temporarily delay the fermentation process caused by such microorganisms.
A process of deodorizing a waste water sludge containing fermentation causing microorganisms comprising treating the waste water sludge at a temperature of 5 to 40.degree. C. and a pH of 5.0 to 7.0 with an active oxygen developing compound selected from the group consisting of alkali metal chlorites and alkaline earth metal chlorites in an amount sufficient to temporarily delay the fermentation process caused by such microorganisms but not to kill all of the organisms.
Dependencies are inferred from the claim text.