Case Studies
Clay Mills upgrade delivers long-term benefits with Chemineer’s Mixers
Sixteen Chemineer™ anoxic mixers, manufactured by NOV, have completed two years of uninterrupted service at Clay Mills STW, Severn Trent Water’s new Bio-P Activated Sludge Plant. The Clay Mills upgrade was a £40 million design and construct contract by MWH Treatment as part of the e5 Alliance.
Serving a domestic population of approximately 100,000 in the brewing town of Burton upon Trent, the works receives a very significant trade load, resulting in a population equivalent (PE) of 421,879 with a FFT (flow to full treatment) of 112,665m3/d and a DWF (dry weather flow) of 47,000m3/d. As part of AMP5, Clay Mills was given a revised and more stringent quality obligation under the UWWTD (urban waste water treatment directive) P (phosphorus) removal legislation.
In the Activated Sludge Plant (ASP), which has a volume of 30,000m3 split into four double-pass lanes, the slow speed, paddle-type GT Chemineer anoxic mixers have been suspending waste sludge solids and providing complete basin mixing, as Richard Thomson, e5 Project Manager, explains:
“The Chemineer anoxic mixers have proved to be very robust and reliable. They have continually eliminated oxygen incorporation from the liquid surface with no swirl or vortex. They have a proven track record of performance on a number of Severn Trent sites including their largest at Minworth”.
Built with a high-efficiency gearbox specifically for agitator service, the modular Chemineer GT mixers have an optimized gear design and lighter weight
shaft diameter requirements that makes them very energy-efficient. They also have a quick and easy seal change capability that saves time and reduces maintenance costs.
Throughout the upgrade, close collaboration and knowledge-sharing between the e5 partners and the supply chain produced innovations that generated value engineering savings of £2.6M.
Naylor Clay Drainage used in ‘Better Barnsley’ project
Whilst we welcome orders from sites near and far, we're particularly pleased to be involved in the Better Barnsley project, which will see the transformation of the heart of Barnsley town centre. The redevelopment site for the Better Barnsley project covers 3.81 hectares and will create a whole new shopping and leisure experience for the town with the traditional markets offer at its heart.
Contractor Henry Boot Construction Limited have been appointed by Barnsley MBC to construct the new CEAG car park and we are pleased to see Naylor clay drainage on full view on the latest work in Barnsley Town Centre.
44 drain TRADER | February 2016 |
www.draintraderltd.com
Chemineer mixers have been a success at Clay Mills
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