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Electrochemical Flotation Concept for Removing Oil from Water.
Final rept. May 72-Jan 73,
LOCKHEED AIRCRAFT SERVICE CO ONTARIO CALIF
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A study was undertaken to determine the feasibility of an electrochemical flotation system for separating oil from bilge water. This system involves flotation, using electrolytically-produced micro-gas bubbles, subsequent to coagulation andor adsorption of oily impurities in the water. Initial electroflotation tests were conducted in batch modules to determine the chemical treatment necessary to achieve the desired separation of the entire spectrum of oil-brackish water combinations. Addition of NaOH to adjust the pH to approximately 10 along with 10-15 ppm of anionic polyelectrolyte was the only pretreatment necessary for all oily waters tested. Pilot plant data was used to estimate the costs of systems with capacities of 30, 100 and 1000 gpm. Modified author abstract
APPROVED FOR PUBLIC RELEASE