Tube settlers which are also known as plate settlers or lamella clarifiers are used in drinking and wastewater treatment plants to settle out suspended solids. Depending on the application the TSS (total suspended solids) loading can vary between 50to 500mg per l or more. When the solid settling force is higher as all drag forces, solids will settle down on the channel surface of the tube settler, accumulate with other solids and slide down as sludge.
Tube settlers are designed to provide as much settling surface as possible but at the same time they must prevent channel clogging.
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