machine screw volute sludge dewatering press for sludge dewatering treatment The spiral type sludge dewatering machine is a kind of water treatment system, which is widely used in municipal wastewater treatment engineering, petrochemical, light industry, chemical fiber, paper making, pharmaceutical, leather and other industries. The actual operation shows that the sludge dewatering can create considerable economic benefits and social benefits for the customers. Features 1. Automatic continuous operation 2. Compact design with flocculation and dewatering 3. Low power and water consumption 4. Low operation cost 5. No filter cloth, no clogging 6. No need for sludge thickener 7. Easy operation and maintenance 8. No vibration and noise