One of London’s most exclusive hotels is using a uniquely-designed grease separator to ensure its kitchens remain in peak condition and keep maintenance to a minimum.
The Londoner, which opened last year on Leicester Square and bills itself as the world’s first ‘super boutique hotel’, boasts 350 rooms, six restaurants and bars, multiple event spaces and a ballroom for up to 850 guests.
But away from the glitz and glamour that guests are greeted with on arrival, a key component that keeps the hotel running like clockwork is its state-of-the-art grease separator.
Installed six floors below ground level, the bespoke-engineered LipuJet P-RAP NS 15 system from ACO Building Drainage ensures that fats, oils and grease (FOG) produced from its 1,500 meals a day are managed and separated from wastewater.
Erik Mul, technical product manager at ACO Building Drainage, said: “When we were approached by the architects for The Londoner, we knew that it would be a challenging project. This was especially the case given the unique circumstances where the grease separator needed to be located so far under ground level.”
A critical challenge of the project was the need to locate the large separator six floors below ground level. This was overcome by supplying ACO’s Lipujet system in sections, which was then assembled on-site once the parts were in place.
The grease separator has a capacity of 4,000 litres and is capable of dealing with approximately 15 litres of wastewater per second.
Once a month, the whole separator is emptied, and the wastewater – including the separated FOG and food particles – are pumped up to ground level using a twin pump arrangement for disposal.
The emptying process is completed by a fully automatic cleaning program, using a high-pressure water jet to clean the inside of the cylindrical tank. Once cleaned, the tank is refilled with potable water.
Mr Mul added: “By using our free-standing Lipujet grease separator, along with our twin pump disposal arrangement, we’ve designed a system that helps the hotel stay compliant with the law. Importantly, it prevents FOG from entering London’s sewers that can end up clogging the system as ‘fatbergs’ and is easy to service and maintain.”
To ensure the Lipujet could cope with The Londoner’s demand, ACO’s in-house technical team modified the ACO LipuJet unit by adding twin high capacity disposal pumps, mounted in series.
ACO’s design team also recommended shortening the pipework to ensure the FOG could be pumped up the six storeys effectively. Certified to BS EN 1825, ACO LipuJet separators are manufactured from high density polyethylene for maximum durability and are highly resistant against the aggressive nature of kitchen wastewater.
Chris Ball, maintenance manager at The Londoner, said: “Erik and the team at ACO have come up with a solution that perfectly meets the needs of our busy and bustling hotel. The separator keeps our kitchens running effectively, and with it only needing emptying once a month, is low maintenance and cost-effective as well.”
The Londoner is part of Edwardian Hotels London, one of the UK’s largest privately owned hotel groups. It also operates The May Fair, The Edwardian Manchester – which are both part of premium lifestyle brand Radisson Collection – and 10 Radisson Blu Edwardian hotels across London.