Articles & Case Studies

ELGA Process Water helps Lakeside EFW to keep generating

Posted: Monday 16th July 2012

ELGA Process Water’s AQUAMOVE mobile water treatment solutions team has reduced maintenance downtime and increased revenue at Lakeside EFW, a major energy from waste plant at Colnbrook near Slough. The facility incinerates 410,000 tonnes of household and municipal waste per year and exports 34 MW of electricity to the National Grid.

Lakeside EFW uses waste fired boilers generating 45bar steam to drive a turbine. When a boiler is drained for its routine maintenance it has to be refilled with demineralised water, with a limited flow from the make-up water demineralisation plant, this would take about three days – days of lost generation. This is where the AQUAMOVE MOFI™ 35m3/h mobile plant comes in. Martin Rogers, EHS Manager at Lakeside EFW, explains: “Hiring in the MOFI™ mobile unit means that we can get the boiler up and running in less than a day, and the increased generation revenue more than covers the hire cost. An Aquamove engineer can be deployed, together with the necessary equipment, fittings and documentation within 2 hours of a call, and that’s reassuring”. It means that if we think we might have a problem with our demineralisation plant, we can always have a MOFITM on standby at short notice.” The MOFITM is self contained, and regeneration is carried out at ELGA Process Water’s regeneration station in Stoke-on-Trent, so there is no chemical or waste handling on site.

Lakeside EFW was impressed with the service from ELGA Process Water, a Veolia Water Solutions & Technologies company, and has placed a contract with their HYDREX® chemical treatment team to help optimise their steam cycle efficiency. The contract covers a twice-weekly visit from one of ELGA Process Water’s chemists to check the boiler water chemistry and to ensure that Legionella control in the domestic water systems meets current legislation.

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