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Wet air oxidation

Wet or wet air oxidation of sludge is the thermal degradation, hydrolysis and oxidation of organic matter at elevated temperatures and pressures. The process does not generate secondary pollutants such as dioxin, furans, NOx (oxides of nitrogen) and SO2 (sulphur dioxide). It can be operated either to enhance the biodegradability of the sewage sludge or to substantially mineralise the organic matter (i.e. convert it to bicarbonate and carbon dioxide).

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Wet air oxidation features and blogs

Blog sludge worth shutterstock 16047946
Blog

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?

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