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A new WPL HiPAF biozone and conical final settlement tank were installed at the Toby Carvery in Stonebridge. (photo: WPL Ltd)
A new WPL HiPAF biozone and conical final settlement tank were installed at the Toby Carvery in Stonebridge.
05.07.2018, 14:44

Repurposing an HiPAF Tank to Support a Wastewater Upgrade

Company News, Contract Awards, Energy, Water & Waste, EMEA
The growing trend for public houses in the UK to re-orientate their business models around food and even become restaurants often requires an upgrade to onsite wastewater treatment capabilities - as was the case with the popular Toby Carvery in Stonebridge, Coventry.

 

Over 1,000 covers are served most days and additional wastewater treatment was required to ensure compliance at a site originally designed for 300. The location of the restaurant next to a busy motorway junction near Birmingham Airport makes it impossible to connect the site to mains sewerage so the existing WPL HiPAF® unit needed to be replaced by a much larger system.

 

Watling Hope is the main contractor for new wastewater treatment plants for all sites belonging to Mitchells & Butlers which owns Toby Carvery. Working in close partnership with WPL it was decided to keep costs down by repurposing the existing WPL HiPAF packaged treatment unit to create an underground primary settlement tank. Two additional units were then connected in series to provide a new WPL HiPAF – high performance aerated filter - biozone and conical final settlement tank.

 

The installation was necessary to ensure the site meets daily demand of 34.3m3 and peak flow of 1.19l/sec. The environmental consent for discharge to the nearby river is 20mg/l biological oxygen demand, 30mg/l suspended solids and 20mg/l ammonia.



Diners unaffected

Installation took two weeks and the restaurant stayed in operation throughout with diners unaffected. Wastewater was stored in the newly created settlement tank and tankered off-site as required during the works.

 

Dominic Hamblin​, technical sales manager, WPL said, “The Toby Carvery at Stonebridge reflects a wider trend as former pub premises change the focus of business to food. The resulting increase in flows and loads means an upgrade in wastewater treatment is often required.

“This was a routine job for WPL, but we were able to deliver best value for money for the client by reusing the existing HiPAF tank in an intelligent way. Our modular systems are designed for maximum flexibility and can adapt to our clients’ needs as they respond to changing market conditions.

“This innovation shows the advantage of working with a supplier that has technical expertise and the customer’s best interest at the heart of its specification process.”

 

Mike Palin, chairman of Watling Hope said, “We’ve been working with WPL for 25 years and have installed hundreds of their SAF plants. The technical support is brilliant and the product is brilliant.

“On this occasion they identified a significant cost saving for the client in repurposing the existing HiPAF. This meant less civils work, fewer truck journeys and less waste for disposal.”

 

Mitchells & Butlers’ area building manager, Martin Lyons said, “As a business, we manage our water, energy and waste in a way which is cost effective to the business and reduces our impact on the environment. The idea of repurposing of WPL’s HiPAF wastewater treatment plant was inspired and is exactly the kind of sustainability initiative we expect from our supply chain partners.”

 


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