ReFood’s anaerobic digestion plant in Widnes is used to divert food waste from landfill, recycling commercial food waste and recycling it into green energy.
Commercial food waste delivered to the ReFood site is processed through anaerobic digester technology, a natural method that works in a similar way to a compost heap, but on an industrial scale, and in the absence of oxygen.
It biologically breaks down food material to produce biogas, which is then upgraded to the standard required and injected back into the national grid.
For a recent application for the Widnes site, heat transfer specialist Fulton successfully tendered for the supply of a packaged hot water boiler system consisting of 12 FHE-250 modular hot water boilers.
Fulton’s boiler installation at ReFood is providing multiple functions. Its two primary functions are:
- to provide hot water for the cleaning of the site
- to provide hot water for washing and sterilisation of the food waste bins
The boiler system also provides heat to the pasteurisers prior to the anaerobic digesters. To comply with ABP regulations, legislation dictates that pasteurised food waste has to be maintained at 70 degrees centigrade for one hour.
Heat from the boiler system is also used for the underfloor heating system in the offices and other ancillary processes on site.
Fulton’s highly-efficient, low-temperature FHE-250 hot water boiler features a fully-condensing, stainless steel heat exchanger and its modular approach to design also means that additional boilers can be combined to suit any application and hot water requirement. With the complexity of control being a criticism of many hot water boilers available on the market today, the new FHE-250 uses a single control panel, which is capable of controlling a single unit or a modular installation.
Commenting on the decision making process, Shane Murray, group project manager for Saria (ReFood’s parent company) said:
“Fulton presented a solution to provide multiple small hot water boilers which, additionally, gave us spare capacity during scheduled maintenance or if one of the boilers malfunctioned. The Fulton design was also considerably better than anything we saw from their competitors.”
Shane continued: “We were so impressed with the design, installation and the fact that heat and hot water from Fulton’s boilers are used for so many functions, that we are also discussing maintenance packages with the company” says Shane.