Liquid purification or separation – Processes – Separating
Patent
1980-07-07
1981-11-24
Granger, Theodore A.
Liquid purification or separation
Processes
Separating
210923, B01D 2100
Patent
active
043023398
ABSTRACT:
A method of separating oil and other floatatable debris from the sand on a beach by localized flooding of the beach is disclosed. Suitable large diameter conduits are provided to introduce large quantities of water to a selected area of the beach, the water mixing with the sand and causing oil and other debris on or buried in the sand to float, and thus to rise toward the surface of the sand. A second flooding operation refloats the debris and a skimmer mechanism then removes the floating oil and other material while allowing the water to return to the beach area. The water supply is provided by means of suitable conduits carried by a truck, tractor, or other beach vehicle. In the preferred embodiment, the water required for flooding is obtained from the ocean by an extension of the supply conduits, with the forward motion of the tractor providing the required water flow through the conduits to the area to be cleaned. Alternatively, the desired water flow can be obtained by means of a low lift pump in the conduits, the pumps being hydraulically operated from the beach vehicle. The first flooding operation provides water to move the oil and other debris toward a center line, while the second provides water to refloat the material in the vicinity of the intake for the skimmer.
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