of heavy rainfall.
Sara Modrego, Assistant Manager at Albosa said, “The Mono stormscreens were specified because, as well as being self cleaning and offering low whole life costs, the screens are self powered and continue to operate in the event of a disruption in electrical power.”
Each of the stormscreens’s mesh drums incorporates two arms, fitted with adjustable brushes. As wastewater flows into the channel and upwards through the unit, solids above 15mm are captured on the mesh. The screened flow powers a paddle wheel, which is mounted below and behind the mesh drum. This drives a brush wheel which subsequently cleans the mesh drum, returning trapped solids back into the main flow for treatment.
An integrated scumboard protrudes into the main flow and deflects large floating solids away from the screen, increasing the screens’ self-cleaning capability.
The stormscreen has a modular construction that is adaptable to existing civil works, with a range of diameters and length options to suit different overflow weir configurations. An optional data monitoring system is also available that incorporates status reports and event logging capabilities.
In addition to the stormscreens, each with a length of 2m and 15mm screening aperture size, the UMAC plant also contains four Mono Widethroat pumps and 42 progressing cavity pumps. These pumps transfer sludge generated from 15 kilometers of collection channels in the southern districts of Madrid, which the plant serves. They are installed to pump the sludge after it has been through the de-watering and sludge thickening process.