Oxford, UK-based Sheehan Haulage & Plant Hire, in conjunction with CDE Global, is holding a series of open days to showcase its newly-commissioned construction and demolition(C&D) waste recycling plant.
With sustainability and recycling high on the agenda of government and local authorities across the UK, public works and civil engineering contractors Sheehan Haulage & Plant Hire, recently installed the new plant, which will be on show from 11-14 September, 2012 (9.30am-4pm). Visitors are asked to take their PPE with them.
The new multi-million pound facility, which was more than five years in the planning, was manufactured, installed and commissioned at Sheehan’s 150 hectare Dix Pit recycling site on the outskirts of Stanton Harcourt in Oxfordshire by
Now as much as 100,000tonnes/year of C&D waste will be diverted from landfill and turned into usable construction aggregates, sands and sub-soil.
The facility will be used to process construction, demolition and excavation waste from Sheehan’s own projects with additional waste being accepted. The output is turned into re-useable materials for future construction projects, 50% of which for Sheehan’s own use.
The new CDE Global waste recycling plant is able to process general building rubble, excavation and demolition material into a range of clean aggregates and shingles, including 3.3mm, 6mm, 10mm, and 40mm grades, which primarily can be used for pipe bedding, with ranges of washed general building sand, fine grade soil and vibro-piling material also being produced. In addition, the plant is able to remove other erroneous matter, including wood, plastics and metals, which are then sent on for further recycling, while extracted water is reused and recycled as part of the washing process.
“Sheehan’s is striving to be better environmental stewards, and we endeavour to sustain natural resources wherever possible,” says Tara Sheehan, financial director of Sheehan Haulage & Plant Hire. “By processing all of our own C&D waste and increasing the volume of local third party waste we are already able to produce and supply recycled sand and sustainable aggregates to many local companies, in addition to meeting much of our own requirements for construction materials in the region.”
The C&D waste is initially loaded into a feed hopper of the CDE Global solution and ferrous material is removed by an overband magnet and pre-screened to remove other erroneous material. Following an initial rinsing through an Aggmax unit to liberate sand particles, these are then sent to an Evowash unit for the first washing phase. Larger pre-screened material is then sent to the Rotomax logwasher for scrubbing and material is discharged to a dewatering screen, with further liberated sand particles recovered for final aggregate rinsing.
The screened and washed aggregate is then discharged to the triple-deck Prograde that grades aggregates into 5-10mm, 10-20mm, 20-40mm and +40mm material.
Waste water is recycled and filtered through the Aquacycle thickener with silt particles being removed and the waste sludge sent to a concrete buffer tank. Further filtering that creates a filter cake of approximately 90% dry solids content and all residual water is recycled back to the washing plant.
