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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

Hydrothermal sludge treatment

A short animation of the Cambi THP Process and how Cambi enhances anaerobic digestion of waste to make biogas.

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Features and blogs

Explore features and blogs around sludge conditioning

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How much is sludge worth?

The UK regulator OFWAT has introduced legislation based on the notion of sludge as a resource. Its value is often expressed in terms of calorific content, and the phosphate is also potentially recoverable. But how exactly should sludge value be quantified? Read article