ADVERTISEMENT FEATURE WASTE TREATMENT TURNING FISH WASTE INTO FUEL


A Börger Multicrusher is playing a key role in the continuing success of an award-winning waste-to- energy operation in the Outer Hebrides, Scotland


A


t Stornoway’s Creed Integrated Waste Management Facility (IWMF) on the


Isle of Lewis, the Börger Multicrusher consistently chops a 7-cubic ton batch per shift of coarse waste salmon. This has enabled the facility to integrate the fish with household food waste and garden waste for its AD/biogas process. Crucially guaranteeing the shred of


waste salmon to meet BSI PAS 110 regulations & EU ABP regulation 1774/2002 [5a] for the safe use of digestate as a renewable fertiliser, the Börger Multicrusher cuts the waste to the required maximum particle size of 12mm. Donnie Macmillan, Plant Manager at the


Creed facility, said: “Börger’s Multicrusher works extremely well for us in a very harsh environment. Some salmon waste can be quite tough and abrasive, so understandably we see wear on the cutters during our inspections, but that’s perfectly understandable. “Importantly, the Börger unit helps us


meet all of our PAS 110 requirements... [and] optimise the methods of managing waste - in this case not sending waste salmon to landfill sites, and not having to have it transported off the island.” Based on the proven design of the


Börger Rotary Lobe Pump, the twin-shaft Multicrusher homogenizes the waste salmon to facilitate the pumping and pasteurisation process at Creed, ensuring that downstream equipment can operate smoothly. By inserting individual blade disks and defining the direction of rotation of the shafts, operators have the flexibility to choose which way the pumped medium flows. Various blade widths and cutting profiles determine the final cutting yield. David Brown, Börger UK’s Managing


Director, said: “We are very proud to play our part at Creed. It rightly deserves all the praise it gets for showing what can be done to protect the environment and reduce carbon footprint with good practice, forward-thinking and hard work.”


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The Börger Multicrusher consistently chops coarse waste salmon. This vital cog in the process has helped Comhairle nan Eilean Siar (the Local Authority for the Western Isles), together with its partners, The Scottish Salmon Company, Pure Energy Centre PEC, and Community Energy Scotland, win the prestigious Scottish Environment Business VIBES award


Managing waste from the island’s


population of approximately 22,000, the Creed IWMF has grown steadily to include a combined heat and power plant (CHP), electric boiler and thermal store, a wind turbine and a hydrogen system comprising electrolyser, storage and refuelling station, and a 960m3


AD/biogas plant. Some of the electricity generated by the


CHP is used to produce hydrogen and oxygen. This is captured, compressed and delivered to the salmon hatchery, where oxygenation is essential. Hydrogen is used in a small fuel cell to provide electricity to the remote site, which sometimes suffers from electrical network failures.


Börger www.boerger.com T: 01902 798977


EXCELLENCE – MADE TO LAST


THE MOST EFFICIENT WAY OF PUMPING


Mobile, stationary or submerged – Börger configures and builds each rotary lobe pump in line with the re - quire ments of the specific application.


The application options of Börger pumps have expanded with the new ONIXline rotary lobe pump. The ONIXline pump ensures the best efficiency even with pressures of up to 16 bar. Börger pumps are available in 24 pump sizes with flow rates between 1 – 1.600 m3


/h. 26 Börger UK Ltd. • Staffordshire • P: +44 (0) 1902 798977 • uk@boerger.com NOVEMBER 2020 | PROCESS & CONTROL / PROCESS&CONTROL www.boerger.com www.boerger.com


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