Filter presses are intended for mechanical dewatering of wastewater sludge and also of the water conditioning sludge and of the industrial slimes. Belt filter presses are used overall at the wastewater treatment plants doe to its high productivity and reliability.
For sludge with initial moisture more than 97.5% the initial sludge capacity can be increased with use of “Comby” filter press (with thickener). Such decision increase productivity by initial sludge due to lengthening of the gravity dewatering zone.
Dewatered sludge of wastewater treatment plants after filter press reaches residual moisture about 75-80% at average polymer dose 2-3,5 kg/t of the sludge dry matter.