HLDS Multi-plate Sludge Dewatering Screw Press belongs to the screw press,Website:http://www.hollyhb.com, it's clog-free and ... new technology that can replace the traditional filter press like belt press and frame press, the screw speed is very low, so it cost ... contrast to the centrifuge, it is a cutting edge sludge dewatering machine.Main Features ♦ Exclusive pre-thickening device enables a wide ...