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Conductive dryers

For conduction drying, the sludge is heated indirectly by bringing it into contact with a surface which is heated either by steam or a hot oil system. Examples of conductive processes include paddle dryers, disc dryers, and thin film dryers.

Conductive dryers related videos

Paddle dryer for sludge treatment Source: Klooth Alex / YouTube

Paddle dryer for sludge treatment

A video to demonstrate a paddle dryer for sludge in operation.

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Conductive dryers features and blogs

Fig. 4.  SP filtrate and acidified sludge samples
Feature

Phosphorus recovery by sludge acidification and dewatering

A pilot-scale Danish study of phosphorus extraction from acidified anaerobic and aerobic sludge samples has revealed removal to be more effective from anaerobic sludges, even though the digested sludge alkalinity increases the total acid demand.

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