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Fluidised bed dryers

The fluidised-bed dryer employs a fixed vertical vessel with a perforated base through which hot gases (air or steam) pass. Sludge particles entering the vessel are gently agitated in a stream of pre-heated gas, so that the gas stream is used for both heating and mixing. Fluidised bed dryers require operation with backmixing of part of the dried sludge product stream with the feed to prevent the sludge going through the sticky phase.

Fluidised bed dryers related videos

Fluidised bed dryer, Andritz Source: ANDRITZ GROUP /

Fluidised bed dryer, Andritz

Video to demonstrate sludge drying in a fluidized bed dryer.

Fluidised bed dryers features and blogs

Blog eu biosolids disposal header
Blog

Biosolids vs sewage sludge

Biosolids are usually considered to be the useful fraction of the sewage sludge. They are generally higher in solids concentration and lower in pathogen content, having gone through a stabilisation process such as chemical dosing, digestion and/or drying.

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