Road sweeping recycling

CDEnviro’s turn-key Road Sweeping Recycling system at Citywide’s Dynon Road Waste Transfer Station in Melbourne, Australia (operational in May 2015), focuses on a number of key functions. First, it utilises attritional scrubbing (to remove the contamination from the surface of the reusable materials), forced flotation (to create separation to clean inert process) and further washing and dewatering. Secondly, the washing water is treated – both mechanically and chemically to allow the recycled water to be reused within the process. 

This article was taken from Issue 80

The input materials are collected from Citywide’s street sweeping and drainage operations. The material typically recovered from this process include: washed sand and washed grit and stone – these products could be used in Citywide’s asphalt production; ferrous metals, for recovery in metallurgical plants; organic material; sludge-dewatered fine materials; and mixed landfill and recyclable waste.

The equipment was chosen after we contacted CDEnviro as part of our research into recycling technology. The volume that could be processed was a big factor. CDEnviro was suitably aligned with the potential volumes at our Dynon Road Waste Transfer Facility. Quality was also important; it needed to be a robust and hardy solution that could grow with our needs and customer base.

CDEnviro also provides a training programme for Citywide operators so that the recycling plant continues to operate at optimum levels after commissioning. Regular maintenance checks are quick and easy to perform, and CDEnviro has said it will work with its partner in Australia, Wastech, to carry out maintenance and service contracts for us.

The plant is controlled by a touch screen display and can be monitored by a mobile application remotely. It has the capacity to process approximately 22,000 tonnes of collected materials per annum, though the recycling plant has been designed to be easily upgraded to recover large stone. The modular design of the plant also provides the scope for a number of upgrades to handle additional tonnage and produce additional products.