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Sludge conditioning

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Introduction to sludge conditioning

Sludge thickening and dewatering processes normally require pre-treatment to assist the separation of the water from the solids. This pre-treatment is referred to as conditioning, which takes the form of either:

  • chemical conditioning, by dosing with inorganic coagulants (such as iron or aluminium) and/or organic flocculants (or polymers), or
  • thermal conditioning by heating the sludge under controlled conditions.
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The CAMBI hydrothermal sludge treatment process Source: CAMBI THP / YouTube

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Microwave drying of sewage sludge: performance and energy demand

Microwave drying of mechanically-dewatered sewage sludge presents an alternative to the conventional convective and conductive thermal drying technologies. MW drying offers higher throughput capacities, and may be viable at smaller scales.

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