The Dehydris Twist from Suez North America is an advanced sludge dewatering process employing Bucher Unipektin hydraulic piston press technology. The automated process consists of a rotating cylinder and moving piston that continuously squeezes the sludge, allowing water to pass through flexible drainage elements. Up to 30 percent reduction in sludge bulk volume can be achieved over conventional dewatering, and digested sludge can be dewatered to autothermal conditions before incineration. The versatile process accepts both drinking water and wastewater sludge. 804/756-7696; www.degremont-technologies.com; Booth #931.