Page 6 - Industrial Technology EXTRA 15th March 2021

WATER AND WASTE TREATMENT...

Optimisation projects cut drive

costs for South West Water

South West Water has cut the energy and maintenance costs of variable speed drives
in a series of optimisation projects at its Restormel Water Treatment Works

outh West Water (SWW) has saved up to costs by up to £25,000 per drive per annum and
£25,000 on the running costs of its reduced the frequency of filter changes.
variable speed drives (VSDs) following a SWW identified an energy saving opportunity at
Sseries of optimisation projects that have its Restormel Water Treatment Works near
also avoided the added expense of needing to Lostwithiel in Cornwall. The eight drives at this site
replace drives early. are of three ratings, 315 kW, 485kW and 523kW.
Working with ABB Value Provider APDS on The VSDs control the motors used to run the
several of SWW’s sites, the projects also cut energy reservoir pumps, altering the speed of the motors to

March 2021 • INDUSTRIAL TECHNOLOGY EXTRA • p6