M&B hails Toby Carvery project as “exactly the kind of sustainability initiative we expect from supply chain partners”

A key Mitchells & Butlers site has implemented a wastewater system upgrade in what installers say reflects a national trend for pubs as they boost facilities to keep pace with food growth.

Toby Carvery in Stonebridge, Coventry, has seen the number of diners eating in its restaurant rise substantially over the years, requiring an urgent upgrade in onsite wastewater treatment.

Over 1,000 covers are served most days and additional wastewater treatment was needed to ensure compliance at a site originally designed for 300.

The location of the restaurant next to a busy motorway junction near Birmingham Airport made it impossible to connect the site to mains sewerage so the existing WPL HiPAF unit was replaced by a much larger system.

Watling Hope, the main contractor for new wastewater treatment plants for all sites belonging to Mitchells & Butlers, which owns Toby Carvery, worked closely with WPL to repurpose the existing 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.

Installation took two weeks and the restaurant stayed in operation throughout with diners unaffected.

Dominic Hamblin​, technical sales manager at 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.”

Mitchells & Butlers’ area building manager, Martin Lyons, said the project delivered a significant cost saving as the repurposing of the existing HiPAF meant less civils work, fewer truck journeys and less waste for disposal.

“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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