Chamber filter presses are designed for filtration and dehydration of already concentrated process water suspensions. The sediment already concentrated in the obliquely-arranged lamellar clarifier is pumped to the chamber filter press by means for further dehydration by means of a special diaphragm pump. The filtrate water drains through a droplet channel during the pressing process and is returned to the production circuit. The particles contained in the process water suspension are retained between the filter cloths. The degree of drying of the filter cakes can be individually adjusted and is monitored by a water sensor.