Australian company, CST Wastewater Solutions’ advanced wastewater fine screening technology is designed to curtail blockages, spills, maintenance and associated occupational health and safety (OHS) issues in municipal and industrial WWTP applications.
The horizontal in-channel rotary drum screening technology simplifies fine screening processes. The in-channel design has a low fluid head loss at peak flows for increased solids removal efficiency.
CST Wastewater Solutions managing director, Mr Michael Bambridge, said: “Advantages of this technology when dealing with fine screening of larger flows (5 mm or finer screening on flows up to 2000 l/sec flow) include mechanical simplicity, self-cleaning and high efficiency screening.”
The configuration of the design means that the screening drum is installed horizontally semi-submerged in line with the incoming wastewater. The plate at the back of the drum directs flow radially through the mesh to optimise solids separation and self-cleaning.
The rotary drum is manufactured from either self-cleaning wedgewire for primary screening, or perforated plate for fine pre-membrane bioreactor (pre-MBR) screening. An internal hopper collects the screenings, which are flumed out to the integral lifting and dewatering screw, to efficiently dewater and reduce screenings volume.
