Abstract: An ozone generator includes an inner electrode formed of a mass of helical windings through which an elongate electrical conductor extends. The elongate conductor is preferably a metal strip having opposing rows of sawtooth projections extending outwardly from opposing side edges of the strip. The metal strip also preferably has a generally sinuous shape in longitudinal cross-section. An outer electrode is separated from the inner electrode by a dielectric tube. The inner and outer electrodes produce ozone gas using an electrical corona discharge in the presence of an oxygen containing gas. A second tube surrounds the first dielectric tube to capture ozone generated at the outer electrode. A pair of endcaps directs gas flow adjacent the outer conductor and through the inner conductor.

Abstract: An apparatus includes a frame carrying a process tank, ozone generating tubes, a venturi, and an infusion chamber for treating water with ozone. A pump circulates water from the process tank and through the venturi to the infusion chamber. The infusion chamber is connected immediately downstream from the venturi. The infusion chamber has a predetermined pressure to produce a head space and thereby generate a relatively large number of bubbles of relatively small size to enhance the mass transfer of ozone into the water. A length of tubing is connected downstream from the infusion chamber to enhance the contact time between the ozone and the contaminants. An ozone generator tube including an inner electrode formed of a mass of helical windings produces a high concentration of ozone from a cooled air supply.

Abstract: An apparatus and method for producing a high concentration of ozone gas using an electrical corona discharge in the presence of an oxygen containing gas. The generator includes a first and second electrode separated by a dielectric tube, each electrode being adapted to be connected to a high voltage AC power supply. The first electrode preferably has a lattice structure and surrounds the dielectric tube. The second electrode is formed of a mass of helical windings with a series of curved surfaces thereon. The second electrode is positioned within the dielectric tube underlying the first electrode. The curved surfaces of the helical windings create a corona therefrom. In one embodiment of the ozone generator, the mass of helical windings is provided by at least one milled sponge having a plurality of layers of a continuous helical winding extending in a generally spiral direction about a central axis of the milled sponge.

Abstract: Waste water, in the form of an oil-water mixture, is passed through a series of successive processing stages for effectively separating the water from the oil and directing the same into respective storage compartments. The separated water is conditioned in its storage compartment for reuse by providing a circulating pump therein for circulating and agitating the separated water and thereby aerating the same to prevent stagnation and freezing of the stored separated water. Further, an additional pump is provided in the water storage compartment for directing the separated water from the storage compartment to a desired location for reuse. The separated water may be heated selectively as it is directed away from the water storage compartment, and fresh water also may be introduced into the water storage compartment if the separated water therein drops to a predetermined lower level.

Abstract: A plurality of compartments are provided, including intercommunicating first and second oil-water separation compartments, each provided with respective drains therein and wherein the flow of water from the first to the second compartment is restricted so as to increase the residence time of the water in the first compartment for increasing the separation of oil therein. The mouth of the drain in the first compartment is positioned higher than the mouth of the drain in the second compartment and so located as to be above the surface of the water when the first compartment is substantially filled with water so as to accommodate a layer of oil floating on the surface of the water so that only oil will flow into the drain and thus be removed from the water virtually free of any water mixed therewith.