Peristaltic pumps aid desludging
August 1st 2007

Two Watson-Marlow Bredel SPX50 hose pumps have been installed at Dwr Cymru – Welsh Water's Lavister Waste Water Treatment Works in North Wales, significantly improving performance at the site.

The peristaltic pumps , which replaced timer-controlled valves for auto-desludging, have required only minimal routine maintenance, and have desludged at the specified rate without interruption to flow or 'rat-holing'. They handle 3-5% dry solids content primary sludge at a transfer rate of 2500L/h. Each pump runs at 16 rpm and has a discharge pressure of less than 5bar.