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EPA/540/R-94/525a
NATGI’s hydrocarbon recovery technology is based
on an oleophilic amine-coated ceramic chip that separates suspended and
dissolved hydrocarbons from aqueous solutions. The hydrophobic amine coating
makes each granule more electrochemically attractive to hydrocarbons in
an unstable emulsion. The technology utilizes a Separator/Filter/Coalescer
Olefiltration System (SFC System), a pressure-sensitive filtering bed
that is regenerated by automatic back-flushing. Recovered hydrocarbons
are coalesced and removed by gravity separation. The SFC System was demonstrated
at the Petroleum Products Corporation site in Pembroke Park, Florida,
in June of 1994. Artificial feeds were formulated by mixing waste oil
from the site with 10W-30 motor oil or kerosene, and water to create oil/water
emulsions having a treatable viscosity. Due to operational difficulties,
only one complete run was accomplished. The technology was evaluated by
pooling data from specific runs. Combined data from the runs with similar
feed streams (Runs 1,2,3, and 5) showed a 95 % reduction in TRPH concentration.
A 65 % reduction in TRPH was obtained for the entire Run 4; a 97 % reduction
was measured for Run 4 prior to breakthrough.
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