Abstract: A method for removing the volatile constituents from gasoline and volatile organic chemicals from contaminated potable water when a fluid including gasoline-water mixture and when contaminated potable water is introduced into a vertical tower includes the steps of flowing the gasoline-water fluid and the water downward in a tower over and in contact with media trays stacked in courses in the tower. The media trays, either circular or square, fit closely within the tower inner wall, such trays are aluminum or molded plastic frames one inch by one inch angles one-eighth inch thick, with a plurality of one and one-half inch wide slats one-quarter of an inch thick on the top of the frame; the slats being spaced apart not less than one-half inch nor more than three-quarters of an inch.

Abstract: A system for treating water includes an aerator or degasifier that is fluidly connected to a blower that moves gases released from the water cascading down in the aerator over slat trays or plastic packing media. The released gases enter a gas scrubber and are treated with an iron salt solution that removes undesirable gases and that form a sludge that is removed from the scrubber. The residual gases, mostly nitrogen, argon, and other minor gases found in ambient air, flow into the aerator.In some instances, the gas scrubber also includes, in addition to the iron salt solution treating equipment, equipment for treating the released gases with caustic soda solution.