The Winklepress WPN belt filter press for wastewater sludge dewatering from Alfa Laval Ashbrook Simon-Hartley has an enclosed frame design that reduces odor emissions, making it a popular choice among wastewater plants in more heavily populated areas. It improves performance and lowers energy consumption and polymer costs. Three model sizes are available, with optional extended zones. 866/253-2528; www.alfalaval.us/wastewater.