Articles & Case Studies

Siltbuster Makes Gate Gourmet's Cutlery Gleam

Posted: Friday 20th January 2017

A bespoke system provided by Siltbuster Process Solutions is treating waste water created by the washing of cutlery and crockery used by British Airways' first and business class passengers.

Gate Gourmet, the leading independent provider of airline catering services, creates meals for BA's passengers at its Heathrow site - where it also reprocesses the used dining equipment, cleaning it ready for its next flight. However, washing the huge volumes of cutlery and crockery involved inevitably results in large quantities of fats, oils and greases (or FOGs) in the waste water, which need to be carefully disposed of.

Siltbuster Process Solutions was approached when consent compliance at site became a problem. Following a site visit and laboratory treatability test work, a system was mobilised from its hire fleet comprising a three inch pipe flocculator, three stage chemical dosing skid and a D25 DAF capable of treating 25 m3 of water per hour. As a result, the water is cleaned to such a high standard it can be safely discharged direct to the site's sewer.

The Siltbuster system treats peaks of 1500mg/L TSS and 4500mg/l COD, ensuring that Gate Gourmet complies with its consent limits of below 1,000 TSS and below 2,000 COD. The system achieves an average TSS removal rate of over 87% and an average COD removal rate of 70%.

Rich Matthews, Siltbuster Process Solutions, said: "Since we began working with Gate Gourmet, we have treated over 140,000m3 of water, enabling the company to maintain its consent compliance and reduce Mogden charges"

He continued: "Our solution was created specifically to meet the needs of Gate Gourmet's Heathrow site utilising modular packaged equipment from within the hire fleet. The system was mobilised and installed quickly, including all the necessary pump and pipe work, making it as easy as possible for our customer."

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