Major waste reduction and recycling success for Severn Trent

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Courtesy of CDEnviro

Severn Trent Water have made significant progress in their drive to reduce waste to landfill volumes and increase recycling through the introduction of a processing plant from County Tyrone company, CDE Ireland.

The plant, which is provided to Severn Trent Water on a rental contract by Biffa is processing a variety of waste materials and since it has been introduced Severn Trent Water have seen a significant reduction in waste to landfill volumes. “We are now sending 50% less waste to landfill than was previously the case” explains Nick Williams, Digester Fleet Manager with Severn Trent Water. “We are recovering a range of materials from the waste which are subsequently used in construction projects and energy generation initiatives within the company.”

The plant from CDE is located at the Minworth Sewage Treatment Works site operated by Severn Trent Water in Sutton Coldfield on the outskirts of Birmingham. Biffa manage the day to day operation of the processing plant which processes a variety of waste materials including wet well waste, gully waste, inlet works grit and sewer blockage waste. The plant also processes reed bed material as part of Severn Trent Water’s Reed Bed Refurbishment Program.

The venture into this industry is a relatively recent one of CDE who have traditionally supplied processing systems to the quarrying, mining and recycling industries. Over the last three years their business in the municipal water treatment sector has grown significantly and this recently led to the establishment of a CDEnviro business unit within the company, specifically charged with further developing business in this sector. The CDEnviro business unit also takes responsibility for the further development and improvement of the product offering currently available from CDE to the sector.

“Our initial venture into this industry some three years ago involved the development of a trailer mounted system designed to process waste from wet wells and digesters” explains Matt Bunting, CDEnviro’s newly appointed commercial manager. One of the company’s first customers for this system was Biffa and it was through exposure to the system as it was applied at the Minworth site that Nick Williams was convinced that the system not only offered a means of reducing waste to landfill costs, but also recovering materials for future use.

In terms of the impact of the system on waste volumes, the Minworth plant has reduced waste to landfill by 50% since it was introduced. This is the saving made by Severn Trent Water when the full rental and operational costs of the plant have been paid to Biffa. “In anyone’s language the reduction in waste volumes made possible by this plant are extremely significant” says Nick Williams.

With a growing focus on reducing waste to landfill and increasing regulation of the industry as whole, Nick believes that major water companies have to step out of their comfort zone and take challenging decisions on how they deal with their waste materials.

The full case study can be viewed here -

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