Sludge Treatment
Primary sludge and secondary sludge (from biological activated
sludge plants) can be costly waste products from waste water treatment
processes.
Most sludges consist, in part, of organic material which is amenable
to degradation by microorganisms. This property can be used as
the basis for treatment processes where oxygen supplied to the
wet sludge promotes aerobic biological activity, and decomposition
of the organic material to CO2 and water,
so reducing the solids present in the sludge. This has the potential
to save alternative sludge treatment or disposal costs.
High purity oxygen can be used successfully to accelerate Sludge
Digestion, and, within the activated sludge process, to promote
sludge digestion in situ.
The use of oxygen as opposed to air raises the temperature
of an aerobic digestion process, leading to the easy maintenance
of thermophilic conditions if required for sludge disinfection.
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