PWTech - Volute Dewatering Press - Brochure

The PWTech Volute* Dewatering Press is a unique technology that offers many advantages over current sludge dewatering devices. Patented world wide, the Volute Dewatering Press is presently used in around 4,000 installations. The key to the process is the “dewatering drum.” This drum can achieve both thickening and pressing (dewatering) of the sludge in a single, compact operation. Thus the Volute Dewatering Press can take sludge as dilute as 0.1% solids directly from a treatment process, such as an oxidation ditch or clarifier, and produce a cake of over 20% solids. Separate thickening, storage, and conditioning processes are eliminated. In addition, the need for operators, continuous use of wash water, and high power consumption are eliminated.