Street Sweeping

Our street sweeping plant was introduced in January 2015 with great success.

The materials collected from gully and street sweeping wastes are processed to generate water, compost and washed sand.

Our Process

The system we are using is a CDEnviro gully waste and road sweeping recycling plant.

The recycling process is as follows:

1. The material is loaded in using the weighbridge operating system.

2. The street sweeping or gully waste is tipped in a concrete bay on site.

3. A loading shovel loads the material into the machines hopper.

4. From the hopper, it travels up a conveyor belt to the log washer.

5. In the washer, the material is washed. Organics float off and the aggregate fraction is removed. Aggregates include, washed grit and 2 grades of stone.

6. The organic fraction is taken from the bay and put into windrows where it is composted to the same scientific standards as the PAS100 before being graded, tested and deployed as a soil improver.

7. The water from the log washer is pumped into a tank where polymers are added to the process.

8. The polymers cause the solids to float off and are pumped out as sewage cake - this is deployed for use on brownfield land restoration projects.

9. The water is then turned through a centrifuge and recycled through the process.

End Results

From inputs of street sweepings and gully waste, we are able to get a washed sand and aggregate fraction which are both suitable for re-use. This normally accounts for 75% of the material.

There is also organic and light weight material which is dewatered and then composted. Organic content normally accounts for 20% of the material.

The remaining 5% of material is a flocculated sludge which is dewatered. The water is recovered and reused and the remaining sludge is deployed to an alternative permitted facility.