Project helps to ensure quality levels for Welsh Water

摘要

NOV Mono has delivered a turnkey project to provide an extra level of protection for a major water and waste treatment plant in Pembrokeshire, Wales. The project centres on an EZstrip™ progressing cavity pump which is now being used on sewage transfer duties to ensure that the plant can guarantee the quality of the treated sewage under any flow conditions. Powered by a 4kW motor and operating at a duty speed of 226 rpm, the EZstrip™ pump draws sewage from the centre of the final settlement tank at Dwr Cymru's Crymych treatment plant. It pumps the sewage back up to the head of the treatment system, from where it returns back through the filter bed to the final tank. This ensures that the plant's biological filters do not dry out and remain effective, even in very low flow conditions. This in turn helps to maintain the quality of the final sewage within the required boundaries, at all times.