| Aerobic Sludge Digestion (ASD) can be used to
reduce waste sludge biosolids, in both secondary and primary
sludges. Oxy-Dep SD, an ASD process enhanced by the use of high
purity oxygen, allows the following: |
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partial disinfection and pathogen kill by operation
at thermophilic temperatures (45 - 65°C) |
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the production of a stable sludge with excellent
dewatering properties |
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much reduced digester retention times (and so
smaller digester volumes) compared with conventional aerated
ASD or anaerobic digestion |
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good process control to reduce odours, VOCs and
foam. |
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| The process is used widely in municipal
and industrial sludge applications. |
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