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Refurbishment Designs for Cheam Water Works- Structural Consultancy Services Bettridge Turner & Partners entered into a design contract with Bowsprit Contracting to design the various refurbishment works required to upgrade the drinking water treatment process . The refurbished works would allow a higher standard of treatment, whilst also providing a cost saving to the client, through the reduction of chemicals used. New 900mm diameter pipework was installed to change round the flow pattern and allow simpler dosing on the chemicals. To ensure a full understanding of the operations at the water works, a test was carried out on a model, which enabled the correct form of pumping the water through the works and out to the customer to be determined. The major work was carried out in the existing contact tanks through the inclusion of new division walls to increase the contact time of the chemicals. Access into these tanks was limited, which necessitated a larger opening being cut through the existing roof. The total cost of the works is £1.65 million
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