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Belt dryers

Belt dryers comprise a conveyer belt which is fed with the dewatered sludge. The sludge solids are slowly transported by the belt through a stream of heated air, generally at 80-180 °C. They permit an additional element of process control to the usual parameters of sludge feeding rate and heat input, since the belt speed can be adjusted to change the dryer residence time.

Belt dryers related videos

Belt dryer in use at Innsbruck WwTW in Austria, Huber Source: HUBER SE / YouTube

Belt dryer in use at Innsbruck WwTW in Austria, Huber

Huber's animation of sewage sludge drying using a belt dryer at Innsbruck wastewater treatment works.

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Belt dryers features and blogs

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Feature

Anaerobic digestion optimization through thermal hydrolysis pre-treatment

Pre-treatment of sludge by thermal hydrolysis upstream of anaerobic digestion is used to improve AD efficiency. A study looked at (pre-)commissioning data for a full-scale AD installation undergoing upgrading with TH to assess the basis for optimisation.

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