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Flotation thickeners

Dissolved air flotation (DAF) provides thickening of sludges by encouraging the solids to float to the surface, rather than allowing them to sink to the tank base as with gravity thickening, where they can be removed by a skimmer. DAF is applied when the sludge solids are neutrally buoyant (i.e. neither sink nor float) and so cannot be readily removed by conventional settling.

Flotation thickeners related videos

Huber DAF process (HDF) Source: HUBER SE /

Huber DAF process (HDF)

A video to demonstrate the principles of the Huber dissolved air flotation plant.

Flotation thickeners 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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