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BSEE


WATER TREATMENT


Evoqua contributes to all weather leisure pool


Sustainability and environmental consideraons were uppermost when the building, one of the largest waterparks in Wales at 90m long by 40m wide, was designed. It is the world's first waterpark to be heated by biomass. Heat and power are provided by the nearby energy centre, which is fuelled by woodchip and elephant grass grown by local farmers. Water conservaon is also an important factor. Being a facility with a high bather load, with up to 2500 bathers per day including children, water clarity is essenal and Evoqua’s pool water treatment system was designed to ensure crystal clear, safe water for the pools and to minimise water


consumpon, reduce energy demand and minimise chemical use


family leisure aquatics complex it features a slow flowing, lazy river ride that takes bathers on a meandering journey outside Blue Lagoon to an outdoor bubble pool. There are also outdoor and indoor spa pools and two interactive wet play areas; one for under 5 years and one for 6–12 years. The central feature is the wave pool, with six different wave patterns breaking on to a gently sloping beach and eight water geysers bubbling away nearby. For the adults, there is an outdoor spa equipped with ten powerful hydro jets to relax the muscles and the mind. There are four flumes to choose from: The Falls is an open flume which takes two riders outside Blue Lagoon to two large relaxation pools, then re-enters Blue Lagoon and fires the riders out into a plunge pool; two enclosed flumes, The Cannon and The Cave, also snake their way outside Blue Lagoon twisting, turning and spiralling, then re-entering into a catch area; the fast and steep Torpedo probably isn’t for the faint-hearted!


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The Blue Lagoon has two circulation systems, each using the Defender® filter. One of the systems has two SP-55-48-2076 filters handling a combined 515m3/h, whilst the second has a single SP-27-48-487 filter for a flow of 120m3/h. The filter uses capillary-shaped filter surfaces precoated with Perlite, a harmless volcanic magma. When a filter


he Blue Lagoon is an indoor water park located in the Bluestone National Park Resort in Canaston Wood in Pembrokeshire. As a


requires cleaning, this is carried out by a unique “bumping” process which mechanically shakes off the separated particles and Perlite and suspends it in the filter tank. The


Perlite is then reattached to the filter elements during the regeneration cycle and the Defender® system is ready to return to service. The process is fully automatic initiated by a timer which means there is no requirement for a manual procedure, either before or after the centre’s operational hours. The cleaning process takes about ten minutes and generates significantly less wastewater than a conventional sand filter backwash. Consequently, a backwash water tank is not required for the Defender® filter, so the balance tank can be much smaller. The low wastewater volume also means that less heated water is


wasted, improving the overall energy efficiency.


By comparison with a comparable conventional sand filter, the Defender® system has a much smaller footprint. This was a major benefit at the construction phase of the project because it meant that the plant room could be smaller, freeing up space for offices and storage. “Sympathetic landscaping is a critical part of our philosophy and this redeployment of space meant key personnel and critical spares were close to the facility at all times”, explains Blue Lagoon. “We rely on Defender® regenerative media filters to ensure our water remains crystal clear for our swimmer’s enjoyment and their safety. This type of equipment allows the team to focus their time on making the customer’s experience a special one.”


About Evoqua Water Technologies


Evoqua Water Technologies is a leading provider of mission-critical water and wastewater treatment solutions, offering a broad portfolio of products, services and expertise to support industrial, municipal and recreational customers who value water. Evoqua has worked to protect water, the environment and its employees for more than 100 years, earning a reputation for quality, safety and reliability around the world. Headquartered in Pittsburgh, Pennsylvania, the company operates in more than 160 locations across nine countries. Serving more than 200,000 installations worldwide, our employees are united by a common purpose: Transforming Water. Enriching Life.®


28 BUILDING SERVICES & ENVIRONMENTAL ENGINEER FEBRUARY 2020 Read the latest at: www.bsee.co.uk


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