New Rotary Drum Screen from Munson for Separating Solid Wastes from Effluents

Utica, New York based Munson Machinery, manufacture of mixers, blenders and size reduction equipment for wastes and bulk solid materials, has launched a new compact Rotary Drum Screen which removes solids from industrial and municipal waste streams. According to the company, its new Model 24-RDS-72 Rotary Drum Screen recovers solid product from process streams at rates from 2270 to 10,560 litre/min without blinding or clogging the screen, while reducing floor space and headroom requirements compared with non-rotating equipment of equivalent capacity, according to the company. The stainless steel unit is comprised of a 61 cm diameter x 183 cm long cylinder with durable wedge-wire screening, a variable speed drive, head box, discharge chute and support structure. The company explained that in operation solid laden effluent discharges from the head box and overflows a weir, flooding the entire length of the variable speed, rotating wedgewire drum screen. Solids deposited on the screen gravity-drain through slotted apertures to moisture levels in the 20 percent range before being removed by a doctor blade and chute. Liquid passing through the screen falls onto an internal baffle that concentrates the flow, forming a full-length water knife that impinges against the underside of the screen, dislodging any solids trapped in apertures, even when handling oily, greasy, fibrous or resinous matter. A variable-speed drive is said to allow adjustment of drum rotation speed to achieve maximum dewatering effectiveness. Munson said that the wedge-wire screen of the cylinder is available in many orifice sizes from 50 micron to 2.75 mm, while the rotating drum is the only moving part, minimising initial cost, operating cost and maintenance. Models with drums 61 cm in diameter are offered in lengths of 91, 122,127, and 183 cm. Models with drums 91 cm in diameter are offered in lengths of 244 and 305 cm. Typical applications are said to include: separation of various solids and sludges from municipal and industrial wastewater, food processes, pulp and paper production and rendering processes; removal of extruded pellets from cooling baths; and separation of debris from any variety of plant and equipment cleaning processes. Read More U.S. Plasma Arc Recycling Export Contract Tetronics Tetronics International has signed of a deal to provide its plasma arc recycling technology to Oklahoma based Duncan Recycling & Refining to recover precious metals from automotive catalytic converters. VIDEO: VICE Documentary on Waste Coal Ash Pollution in the U.S. VICE has published a two part documentary series looking at the issues surrounding the estimated 113 million tonnes of waste ash produced by coal fired power stations in the U.S. each year. U.S. E-Waste Recycling Firms Join Forces on LCD Mercury & Other Specialised Services E-waste recycler, 3S International, has formed strategic partnerships with regional and national recycling companies including IMS Electronics, Kuusakoski Recycling, Sims Recycling Solutions and Valley City Electronic Recycling as part of its strategic growth plan.