The haulage and excavation firm recently partnered with wet processing experts CDE to commission a cutting-edge waste recycling plant to help it achieve its ultimate aim of zero waste to landfill.
In the Liverpool area, construction & demolition (C&D) waste is in abundance and CCC Waste, an established market leader in total waste management solutions, was processing over 15,000 tonnes of recycled materials every week.
With such waste volumes readily available, the company, operating from its 35-acre site in Kirkby, recognised that a modern technological solution was needed to close the loop on construction waste.
“We wanted to reduce the volume of material being sent to landfill, provide effective circular economy solutions for our customers, and increase our production volumes,” explained CCC Waste director, Sean Munro.
“We process a large variety of waste, from C&D waste to that generated by households, including plastics, card, and so much more. Much of these streams contain recyclable materials. In particular, recycled aggregates are a large part of our business and an area where we see great potential for further development in pursuit of our zero waste ambitions.”
Operating a dry crushing and screening plant, the company faced challenges when processing damp materials during the wet months of the year. This resulted in more frequent downtime and lower product yield as a proportion of the hard to process material would be sent to landfill -an undesirable outcome for a company steadfast in its commitment to advancing the circular economy.
“When we were dry processing we couldn’t extract any sand; it was all mixed up with soils, and we couldn’t get any of the sand out. Anything –50mm down was going to landfill,” Munro said.
CDE business development manager Mike Bibby said a full technical solution was required to support CCC Waste to gain momentum in its mission to achieve 100% landfill diversion.
“It was evident that many of the downstream challenges around product quality, specification, and waste to landfill volumes, to name a few, were stemming from inefficiencies in the dry crushing and screening process.”
A wet processing solution, he said, would “maximise the recovery of washed recycled materials, which can be marketed at a premium, while eliminating associated disposal charges and delivering significantly for the business, both environmentally and commercially.”
Working in close partnership, CDE and CCC Waste set out on journey to define a solution aligned with the needs of the business, which included visits to reference sites throughout the UK, such as Malcolm Group, William Thompson & Son, and Sheehan Group, where CDE plant equipment is in operation.
“We had been looking to invest in washing equipment for quite some time and we explored several different options, but it was important we find the right partner – one whose values aligned with ours,” Munro said.
“We visited several CDE sites in England and Scotland and those visits were hugely valuable to us. The plants were operating with great efficiency. We came away with ideas about how we could maximise the footprint of our own site, too. They helped us see the synergies between our two businesses.”
Guiding CCC Waste as it took its first steps into the wet processing of materials, CDE proposed a solution comprising its R4500 primary scalping unit, which is ideally suited to handle the challenging and variable nature of the company’s incoming C&D waste streams from across a broad range of industries.
A flexible and responsive plant that can cope with a wide variety of feed material, the solution features CDE’s AggMax scrubbing and classification system, which allows for the effective removal of organic material and other contaminants prevalent within CCC Waste’s feedstock, and the EvoWash sand washing system, complete with patented Infinity dewatering screen, which offers unrivalled control of silt cut points to guarantee high-value, in-spec sands that are ready for the market straight from the belt.
The inclusion of CDE’s AquaCycle thickener for primary stage water management and a Filter Press ensures CCC Waste is able to recycle up to 95% of the process water for immediate recirculation and reuse, while producing a filter cake by-product with a range of applications to help achieve complete landfill diversion of incoming C&D waste.
Commissioned late last year, the new CDE plant has doubled sand and aggregate output for CCC Waste. Every week, Sean and his team are now producing up 30,000 tonnes of washed recycled construction materials.
The plant is currently processing up to 200 tonnes per hour and producing nine graded products, including sand and aggregates ranging from 0-2mm up to +80mm oversized as well as a filter cake.
