Pneumatic press EWAPRES is a device designed for additional sludge dewatering. It is suitable for coagulated sludge from paint shops after gravity dewatering and for sludge with a similar structure. The press is driven by a pneumatic cylinder and works in a semi-automatic mode. It is designed for EWAC sludge drainage containers, type EB 1000 and for Eisenmann containers. The filtrate from the press container drains by gravity or can be pumped out by a small air-driven diaphragm pump. With this press, the percentage of dry matter in the dewatered sludge is significantly increased. This significantly reduces the cost of sludge disposal.