WASHING PLANT LAYOUTWASHING PLANT LAYOUT Trommel Waste Fines, Oil Contaminated Soil, Construction WasteTrommel Waste Fines, Oil Contaminated Soil, Construction Waste

1. Contaminated soils, construction waste etc. loaded into feed hopper.

2. Feed conveyor transfers feed stock to attrition scrub system to be broken up and washed.

3. Washed aggregate from attrition scrubber is graded by size using screens.

4. 5-80mm aggregate is removed and conveyed to holding area.

5. 0-5mm sand and water is fed to the sand plant. 0.075-5mm sand is separated and conveyed to holding area.

0-0.075mm silt+water+floatables is piped to hydro recycle tank.

6. Poly is added to waste water, silt coagulates and sediments out. Waste water+floatables is transferred to the

hydro separation tank.

7. Floatables and any remaining sediment are separated out in the hydro separation tank. Recycled water is

transferred to the recycled water holding tank.

8. Recycled water is returned to the washing process by the main water pump and pipe works.

9. Silt collected in the Hydro Recycle and Hydro Separation tanks is pumped to the sludge buffer tank.

10. Poly is added and the silt is pumped to the centrifuge. Water is removed from the silt by the centrifuge and

returned to the Hydro Recycle Tank. The remaining silt cake is an end of process waste product.

Hydro Recycle Tank

Hydro Separation