News DryVac at the Severn Trent Water WWTP at Finham, Coventry, UK - 2007 In March 2007 Severn Trent Water completed the purchase of the DryVac installation at Finham, near Coventry with TVD continuing to provide an operation and maintenance service. TVD (UK) Ltd was appointed supplier of Sludge Dryer Plant and associated services to Severn Trent Water in February 2007. Severn Trent have plans for the installation of at least three sludge dryers in the AMP 4 investment period with the first due to come on line in March 2008 at the Netheridge sewage treatment works in Gloucester. Plants will then follow at Derby and Strongford. TVD is in negotiation with Severn Trent over the provision of an operation and maintenance service for these installations.