Articles & Case Studies

Chopper pumps improve screening transfer process

Posted: Monday 4th August 2008

The ability for pumps to operate efficiently, even when storm surges and unusually high flows occur, is an essential requirement in many water, waste and effluent treatment applications.

Critical periods are when high flows and storm surges result in an increase in rag or other heavy debris which can cause pump failure resulting in expensive downtime. This situation was one of the factors leading to the reengineering and upgrading of an Anglian Water pumping station facility, which included the installation of Vaughan ‘Chopper’ pumps, supplied and installed by Huntingdon based P&M Pumps.

The Anglian Water One Alliance facility at Garrison Road, Great Yarmouth in Norfolk, collects raw domestic and industrial effluent prior to treatment, as part of its screening and transfer process from pumping station to works. A Vaughan auto self-priming SP10R Chopper pump was supplied and installed by P&M Pumps for transferring rag matter from a collection sump adjacent to a storm screen into a gravity main leading to the local sewage treatment works. Prior to the upgrade, Anglian Water had relied upon maceration and this lacked the required performance, for example, falling short of the flow targets required for the transfer process.

In addition to improving the flow performance, regardless of heavy rag and solid matter, the compact Chopper pump assembly specified by P&M Pumps, enabled easy installation on top of the existing foundations where working space was very restricted.

Commenting on the installation and subsequent pumping performance, Graham Rose, the Site Engineer at Garrison Road confirmed, ‘The operational problems we were experiencing with maceration within the transfer process have been eliminated, thanksto theVaughanChopper pump’. He continued, ‘The pumps ability to handle rag matter easily and efficiently was crucial to our selection and an added bonus is that the pumpdoes not macerate solids and rags, it only chops what it need to chop to stop the pump from clogging’.

Graham concluded, ‘The pumps performance has provided the benefit down stream as inlet screens can now remove far more material than the previous system allowed’.

Through their experiences at the Anglian Water site and other installations, P&M Pumps have demonstrated that their pumps and expertise can bring significant cost-savings. In most cases, retrofitting Vaughan Chopper Pumps in the correct areas to deal effectively with the process, can be self-financing. Furthermore, payback periods of less than one year are realistic, thereby minimising the effect to the budget holders.

Tel: 01487 830123


Read the magazine online

November 2020

About the magazine »
Magazine archive »


Information for advertisers »

Huber British Water Cranfield University buttonwood marketing Water Aid Harvey Communications Pulsar Button June 13 wateractive
Pulsar New Banner