Articles & Case Studies

Luton based Warden supplies media for the largest MBBR installation in the UK

Posted: Tuesday 13th March 2018

Moving Bed BioReactor [MBBR] technology has become the first choice with the UK Water PLCs when it comes to upgrading waste water treatment plants in the AMP6 programme and beyond.

Anglian Water initially installed 2No 18m diameter MBBR reactors at Corby STWs in 1998 to reduce the load onto the existing Activated Sludge plant. MBBR technology offers process security, low operator input with a guaranteed & consistent effluent quality. The fixed film process is well established, robust and extremely simple to operate.

In 2011, as there was a need to provide additional capacity to ensure compliance was met to cope with increased trade loads, as well as providing spare capacity for maintenance it was decided to construct a third MBBR reactor. Reactors one and two would take 25% of the load each and flow and reactor three would take the remaining 50%. The MBBRs are designed to ensure the maximum permitted BOD going onto the AS plant load does not exceed 3,200Kg/d.

In 2016, Anglian Water decided on an upgrade of the MBBR system at Corby STWs to ensure compliance with a tighter ammonia standard driven by the EU Water Framework Directive "No Deterioration" programme. The three reactors have an approximate total media volume of 2400m3 representing a 45% fill per reactor and treats a pe of c150,000 comprising both municipal wastewater and Industrial effluent.

Warden's Biopipe+ with a protected surface area of 500m²/m³ was selected for the upgrade offering additional performance, process and operational security and low carbon footprint. Its innovative design creates a high percentage of protected surface area for microorganisms to adhere. In turn, this increases the overall biomass concentration and can reduce the tank volume required for wastewater treatment. Large openings allow the wastewater to freely pass through the media which helps maintain a healthy and thin biofilm

Bill Measham, @One Alliance Project Delivery Manager said, "We are committed to protecting the environment for future generations and Warden Biomedia offered the best solution to meet all Anglian Water's requirements. The media is manufactured in Warden's 'state of the art' manufacturing facility in Luton which ensures the carbon footprint of the complete process is controlled and kept to a minimum. Warden also offered a high-quality product which is competitively priced and fully recyclable at the end of its product life."

Process specialist, ACWA Services of Skipton was awarded the contract for the upgrade of the MBBR system ensuring every element of the contract was completed on time and to budget.

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August 2021

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