Recycling & Waste Management Profitable sweep
ADMEC is the largest independent road sweeper hire company in the north east of England, providing mechanical sweeping services for local authorities, construction sites, house builders, industrial sites and facilities management contractors. In January 2010, ADMEC purchased a Gritbuster, a new road sweeping and gully waste treatment and recycling system developed by Siltbuster Limited. To date, some 4,500 tonnes of road sweepings have been processed.
ADMEC processes on average 50 to 75 tonnes of material per day, with even higher volumes during particularly busy periods.
Sand on left - oversize organics and debris on right
The Gritbuster system is capable of processing up to 10 to 15 tonnes per hour of a range of feed consistencies. ADMEC aims to recover and recycle as much of the recovered material as possible, including the water, with the target of achieving a 95% recycling rate, which the Gritbuster system is helping to deliver. Sand material forms the bulk of the road waste and ADMEC now sells this recyclable sand - both coarse and fine grades - locally for a range of uses including block paving, pipebedding, and concrete. Fine organics are taken off site for composting, filter cake is used for landfill restoration and even the oversize is further treated to recover the gravel for recycling. After processing all the larger particulates, all that remains is the silt and fine solids laden water, which is treated in an adjacent water treatment plant, resulting in clean water for recycling and pressed fine solids filter cake.
www.solidsandbulk.co.uk
November 2010 • Solids & Bulk Handling 49
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