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14/04/2011
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Severn Trent Water's sewage treatment works in Newthorpe, Nottinghamshire reports improved pumping efficiency since installing a Chroma progressing cavity pump.
 The equipment, from framework supplier Nov Mono, is pumping digested sludge to the site's centrifuges for thickening – a service that had been problematic, with the previous pump experiencing gearbox failures, resulting in significant plant downtime.
Regional maintenance advisor at Newthorpe STW, Andy Berry, says that de-ragging the pump was also a problem, due to its small access port.
NOV Mono delivered the Chroma PC pump on a quick lead time basis, also specifying the equipment as a direct interchange with the existing pump to avoid pipework modifications.
"As well as benefiting from improved control over the process, with a variable speed drive, de-ragging is much easier and we can take advantage of excellent spares lead times and pricing, due to Nov Mono being a UK based manufacturer," comments Berry.
"We have a superb working relationship with the NOV Mono team and a strong framework agreement. We couldn't be happier with the solution they have provided for us," he adds.
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Author
Brian Tinham
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