Surf-washing (in situ)

Surf-washing (in situ)

Type of treatment: Treatment

Description:

Cleaning of the polluted sand and pebbles by moving the sediments into the breaking waves zone.


Waste:

Medium to lightly polluted sands
Medium to lightly polluted pebbles & stones


Situation/Possibilities in the country:

May be tested in every country, requires marine geologist advice and testing in situ.


Interest:

Use of the “natural” energy of the waves and return of the sediments on the beach.
Low cost and no specific, costly equipment required.


Entry criteria:

Usable only for sediments that will remain on the beach and that are lightly to medium polluted.


Operational constraints:

Requires personnel and earth moving equipment (to push the polluted sediment in the wave breaking zone and sorbent material to recover the oil.


Impacts:

Minimal if the oil is correctly recovered using sorbent.


Legal constraints:

Refer to those applying to the management of oily water and quality of coastal water (however, special authorisation should be delivered for such work).


Efficiency:

Depending on viscosity and weathering of oil, temperature, exposition to waves.


Cost:

CAPEX : none (if local equipment is rented)
OPEX for one working site and team: daily cost of one or two mechanical shovel, team of one supervisor, 10 personnel, PPE and sorbent.

published on 2019/12/10 14:45:51 GMT+0 last modified 2019-12-10T14:45:51+00:00