Grontmij to deliver the UK’s First DEMON® Plant for Wessex Water

Posted: Wednesday 21st November 2012

Engineering consultancy Grontmij is set to introduce a next-generation, pioneering nitrogen removal treatment technology, designed to save on operating costs, to Wessex Water.

Grontmij will deliver the first DEaMONification (DEMON®) process technology to the UK, an energy-saving nitrogen removal technology, which removes ammonia from high strength waste water in an efficient and sustainable way. The pioneering technology is expected to deliver OPEX savings in the region of £130k per annum to Wessex Water.

DEMON® is a two step process, involving nitrification, followed by deammonification to remove nitrogen from sludge liquors. Ammonia is then converted into a safe nitrogen gas, without using an external carbon source or treatment chemicals, which are normally required for nitrogen removal within wastewater treatment plants. The process is energy efficient and will deliver energy savings of up to 60%.

Grontmij is currently delivering the DEMON® process design and detailed design phase for Wessex Water, with plans underway to convert the water utility’s existing SBR system at Poole sewage treatment works, into a DEMON® process treatment plant. It will further bolster’s Grontmij’s strong track record in delivering pioneering energy efficient technologies and follows their successful delivery of four full-scale DEMON® plants in Europe.

Paul Lewis, Wessex Water Framework Director for Grontmij said: “This is a significant step for the UK water industry, as it marks a major development in the use of more advanced treatment technologies that deliver significant energy, cost and carbon savings that they require.

A fundamental part of our ethos is the delivery of value beyond engineering for our clients. By drawing on our European expertise and harnessing their operational experience in DEMON® technology, we are able to deliver significant efficiencies to Wessex Water.”

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