Drum screens made for high-flow and high-solids streams
This company’s internally fed rotary-drum screen (photo), the first of a new Drum Line product family, applies proven and adaptive screening technology to fine screening for municipal and industrial water-treatment applications. Engineered for sites with both high flows and high solids content, the product is designed to manage difficult-to-capture debris and protect sensitive treatment processes, such as membrane bioreactors (MBR), from fine particles and fibers. The new drum screen is said to combine mechanical simplicity, trouble-free maintenance and long product life for treatment process reliability and increased efficiency. Key design features overcome the two major challenges historically associated with drum screening — clogging and corrosion. For instance, trunnion wheels have been replaced with stainless-steel shoes. The devices are also equipped with ultra-high molecular weight (UHMW) polyethylene, water-lubricated wear strips and a direct-drive system that eliminates chains and sprockets and is positioned outside of the wet area. With few wear parts, a fractional horsepower motor and minimal user intervention, users can reduce operating expenses. — Duperon Corp., Saginaw, Mich.