Washing of pebbles (concrete mixer or hot water/ high pressure)
Washing of pebbles (concrete mixer or hot water/ high pressure)
Type of treatment: Treatment
Description:Cleaning of the pebbles and stones using high pressure and hot water cleaners.
Waste:
Polluted pebbles/ stones
Situation/Possibilities in the country:
Required equipment could be sourced in any country
Interest:
Allows returning the clean pebbles on the beach.
Entry criteria:
Any polluted pebbles and stones.
Operational constraints:
Requires personnel, specific site, high pressure cleaner / steam cleaners, energy, washing effluents management facility.
Steam cleaners that can work with sea water should be used preferably to limit the use of freshwater.
Impacts:
Minimal if the washing effluents are managed correctly and if sea water is used.
Legal constraints:
Refer to those applying to the management of oily water.
Efficiency:
Depends on the number of cleaner used.
Cost:
CAPEX: one high pressure / hot water cleaner working with sea water: 7,000 euros.
One portable concrete mixer (benzene engine): 1,000 euros.
OPEX is mainly related to the cost of manpower (3 to 4 workers per high pressure machine/ concrete mixer).