Articles & Case Studies


Posted: Thursday 5th December 2019

Water treatment specialist, Veolia Water Technologies UK has worked closely with one of the UK’s leading construction companies to deliver a multi-faceted and carefully tailored purified water solution for a series of three new biomass power stations located across the country.

VWT UK was initially invited to tender for a boiler feed water treatment plant for the first wood burning plant on the East Coast. The company demonstrated its capability of supplying a total solution with more packages, which added value to the client and therefore the main contractor expanded the scope of the contract to cover two similar biomass stations elsewhere in the UK.

The outcome has been the delivery of three almost identical packages involving the design, installation and commissioning of skid mounted systems for producing very high purity water, water treatment chemical dosing equipment to supply the boilers, and mobile water service to allow pure water to be used on-site for the commissioning process.

As a result of demonstrating its expertise, the company has been awarded contracts for the on-going servicing and maintenance work and further collaborations for future biomass plants are also currently under consideration.

As a world leader in water technologies, and with a corporate ethos strong on sustainability, VWT UK is an ideal partner for the construction of renewable energy projects; having an established track record of working with such power industry giants as Hitachi, EDF and Eon; both in the UK and on the continent.

For this project, the three new biomass plants are burning waste wood which would otherwise go to landfill: saving thousands of tonnes of CO2 going into the atmosphere, whilst supplying renewable energy to the grid.

Ultimately, using the highest purity water to protect the internal surfaces of the boilers and turbines will help ensure the long-term efficiency of the power plants: combatting the build-up of scale.

Each of the 20 plus MW biomass stations required three separate skids: the first included a duplex softener and a carbon filter, while the main skid featured a reverse osmosis unit and a continuous electrodeionisation (CEDI) unit as well as a polishing tank. The final skid comprised a low energy duty and standby treated water pumps. Also, due to relatively restricted headroom within the main steel structure, VWT UK provided pairs of balanced horizontal tanks rather than standard break tanks. The systems have been sized to supply up to 1.2 m3 of pure water an hour to top up the low loss boilers.

Ben Moore, Business Development Manager at Veolia Water Technologies UK explains: “This was a textbook project for us involving different divisions of our business, covering the supply of chemical dosing and purification equipment, as well as our mobile service for commissioning and continuing maintenance support.

“The client chose to award VWT UK the contract because of our expertise and long track record in the power industry. Our unique ability to achieve the promised levels of local service and support throughout the whole process, combined with our total solution approach gave us added value over our competition. There were bespoke elements to what is a multi-faceted solution, also involving very close cooperation between our project delivery teams and the client to achieve tight programme deadlines.”

Treating feed water is just one of the many industrial applications served by VWT UK, as well as optimising boiler and cooling tower performance in order to minimise chemical usage. VWT UK’ s range of Hydrex chemicals will prevent scaling caused by minerals from the water being deposited on internal surfaces, and corrosion linked to the reaction between metal elements and dissolved oxygen or CO2. VWT UK’s power market project portfolio extends from localised Combined Heat and Power (CHP) plants up to new nuclear stations. Normal 0 false false false EN-US X-NONE X-NONE

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August 2021

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