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Rotary drum thickeners

Rotary drum thickening increases the sludge solids concentration by agitating the solids in a slowly-rotating cylindrical drum with porous walls though which the water (or filtrate) drains. The drum is normally 0.5āˆ’1.5 m diameter drum and rotates at speeds between 5 and 20 RPM while the sludge continually passes along its axis.

Rotary drum thickeners related videos

Sludge solids separation theory Source: Judd Water & Wastewater Consultants / YouTube

Sludge solids separation theory

Sludge solids separation theory āˆ’ a brief introduction to the theories around sludge sedimentation, cake filtration and cake compression.

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Rotary drum thickeners 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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