Gravity Belt

Gravity belt thickeners consist of a gravity belt that moves over rollers driven by a variable-speed drive unit. It is used for the thickening of raw and digested sludges after conditioning by the addition of polymer. The conditioned sludge is fed into a box, which distributes it evenly across the width of the moving belt. As the water drains through, the sludge is carried to the discharge end of the thickener. Solids concentration achieved is between 3-6%.