PUMPS AND PUMPING SYSTEMS UU increases capacity at Acton A
high performance packaged pumping system from NOV Mono
has been specified by United Utilities to enhance process efficiency at its pumping station (PS) in Acton Bridge. The PS began experiencing problems with its existing equipment following the addition of raw sewage from a local bar and restaurant.
It could no longer cope with the full pressure of the discharge head within the rising main, which runs at just over a mile. United Utilities (UU) needed a solution which could handle the change in capacity and full
Smart pumps save time and money
Making a difference: NOV Mono
pressure of the rising main, but also allow the pumps to be dismantled and maintained in a restricted space due to the constraints of the existing PS.
Ian Warburton, UU’s field service engineer at Acton Bridge, commented: “Having unsuccessfully trialled a number of alternative technologies, we decided to call upon NOV Mono to provide the answer.
“We have used NOV Mono products for over 15 years at a number of our sites and we know that they are extremely reliable and the standard of workmanship they provide is always outstanding.
“By combining two of its revolutionary maintain-in-place NOV Mono EZstrip progressing cavity (PC) pumps with two high
performance macerators, NOV Mono provided us with the ideal solution.
NOV Mono says the EZstrip has been specifically designed to provide a quick and easy way to disassemble, de-rag and maintain a PC pump in-situ, eliminating the costly maintenance and down time that servicing can often cause. This involves significantly lower installation costs compared to a traditional 100mm rising main sewer and, says the company, up to 75% savings can be achieved. “The installation process as a whole was extremely smooth and we are very happy with the service that the NOV Mono team provided,” Warburton said. “I have worked with many subcontractors over the years and have never come across a team more willing to go the extra mile.” nnn
Installation of Seepex Smart Conveying Technology (SCT) on progressive cavity (PC) pumps has cut maintenance times for one pump application from half a day to just 30 minutes for Bedford Sewage Treatment Works (STW). The Anglian Water site had recurrent ragging problems with one of its pumps, which was causing massive downtime. The operator replaced a competitor’s PC pump with the latest Seepex SCT pump. Seepex says that dismantling and reassembling piping and the removal of other equipment components is eliminated with SCT as the rotor and stator can be replaced separately. Due to the integrated retensioning device, a simple readjustment of the stator increases the service life of the stator and rotor. According to the German engineering company, whose UK subsidiary is based in Yeovil, a unique design allows maintenance work to be performed in situ, without dismantling internal joints or removing pipework. In this way manual intervention times are reduced by up to 90%.
Seepex says the smart technology is particularly useful when space is limited, as maintenance can be carried out in situ. It is not only new installations that can benefit from SCT, according to the company. Pumps can be retrofitted, allowing customers to upgrade and ensuring their businesses enjoy long-term cost savings. nnn
Drive to online maintenance management
Drive engineering company SEW- Eurodrive has launched a new web-based Complete Drive Management (CDM) service that integrates the maintenance and servicing of industrial drives with an online databank. The service provides a complete overview of all the drive technology at a given site, or group of sites, including those held in storage. The company says users can see at a glance the condition of each drive, access its service history and schedule maintenance by an SEW-Eurodrive engineer.
UK service manager, Karl Rigg, said: “The CDM database is ideally suited to customers with multi-sites, like the water
22 Water & Wastewater Treatment June 2011
industry. The ability to have a complete inventory of all drives over many sites is particularly useful when looking for similar drives in a breakdown situation. “Standardisation and energy-saving are also key features of the CDM database that customers are finding very useful.” According to SEW-Eurodrive, after logging on through a secure DriveGate portal, users are presented with an interface to navigate around all the drive systems. Technical details are listed for each drive, including those that were not manufactured by SEW-Eurodrive. Condition monitoring such as vibration analysis and oil age monitoring can also be linked with the databank.
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