Three Belts For Lerwick
6 June 2006, News release from Ashbrook Simon-Hartley Ltd
Upgrading of Scottish Water's Lerwick STW is being centred on a new development in dewatering technology - the 3-Belt Klampress.
Engineers Galliford Morgan are undertaking the project on behalf of Scottish Water Solutions. "The brief is to increase the capacity of the plant to cope with the increased demands of the Lerwick population," says Galliford Morgan's project engineer Brian Wilson.
The ability to cope with the challenges to dewatering created by severe weather is a critical requirement at Lerwick. Serving the Shetland Islands' main conurbation and located close to local housing, odour control is also a major concern at this STW.
Our new 3-Belt Klampress will rise to these challenges," says Ashbrook Simon-Hartley's Mike Moston. "We've developed it to handle variable and thin sludge feeds which are characteristic of high rainfall areas like the Shetlands."
Designed for sludges with feed solids less than 1.5%, the 3-Belt Klampress combines a variable speed gravity deck and pressure section in one unit to thicken and dewater in one process. Compared with alternative technologies it introduces the scope for operators to make significant savings on Capex and O&M budgets.
Feed sludge only has to be mixed with polymer once, rather than twice with separate thickening and dewatering, so consumption can be halved. Combining the two processes also makes for much-reduced footprint and associated construction and installation costs.
In consideration of the plant's proximity to Lerwick's residents, Galliford Morgan specified the full odour containment option. "This of course has to be sympathetic to operation and maintenance requirements," Mr Moston adds. "So removable steel panels are used to contain the process whilst keeping it readily visible and adjustable."
Delivered in April, Lerwick's 3-Belt Klampress is scheduled for commissioning during the summer of 2007. The manufacturer's national service team will guarantee thereafter this remote plant's on-going service and process optimisation.
Mr Moston says Ashbrook Simon-Hartley are uniquely equipped for this claiming that as the UK's largest service provider to thickening and dewatering plants they can guarantee a 12-hour response, regardless of location.
For further information please email Ashbrook Simon-Hartley Ltd