An ozone generator includes a discharge chamber; an inlet opening for feeding air into the discharge chamber; an outlet opening for removing ozone from the discharge chamber; and at least two cylindrical electrode sets in the discharge chamber. Each electrode set includes a ground electrode; a high voltage electrode; a dielectric between the ground electrode and the high voltage electrode; the dielectric separated from the ground electrode by a first discharge gap, and the dielectric separated from the high voltage electrode by a second discharge gap. A high voltage power supply provides a voltage impulse to the high voltage electrode of at least 2 kV (at least 5 kV is most cases), and a peak current of at least 1 ampere (at least 4 amperes in most cases). The high voltage power supply provides a dU/dt of the voltage impulse of between 5 kV/sec and 50 kV/sec.

An ozone treatment apparatus includes: an ozone gas generator that generates ozone gas from raw material gas; a sludge pump that pressurizes sludge to be treated; an ejector in which the sludge to be treated, which is pressurized by the sludge pump, is injected; and a valve provided between the ozone gas generator and the ejector. The valve becomes in an open state when pressure on the former stage side is larger than pressure on the latter stage side by a specified value or higher. An ozone gas storage facility may be provided between the ozone gas generator and the valve. A sludge mixing tank installed in the latter stage of the ejector and a sludge circulation pump that connects an upper part of the sludge mixing tank and the latter stage of the sludge pump may be provided.

Embodiments of the present invention describe the formation of a current source, a light source, and an ozone generator by using a coated double dielectric barrier discharge system (CDDBD). A system for generating charge may include a CDDBD having at least two electrodes that are separated by a gap filled with a gas medium, wherein each of the at least two electrodes are covered with an insulator that prevents charges in the at least two electrodes from passing through the gas medium, and wherein surfaces of each of the at least two insulators are coated with a material having a secondary electron emission coefficient higher than a material of the insulator. Furthermore, the system for generating the charge may also include a power supply coupled with the CDDBD device that supplies energy to the CDDBD device to form an initial electric field.

A water treatment device includes a grounding electrode having a planar flowing water portion that causes treatment target water to flow, a multiple of wire form high voltage electrodes provided parallel with the flowing water portion in a position distanced from the flowing water portion of the grounding electrode and to extend in a direction intersecting a flow direction of the treatment target water, and a blowing device that forms a gas flow that intersects an extension direction of the high voltage electrode and intersects an extension direction of an electrical discharge. This kind of configuration is such that even when water droplets adhere to the high voltage electrode, the water droplets are blown away by a pressure of the gas flow formed by the blowing device, and a spark discharge is restricted.

In an ozone generating system which performs intermittent operation, that is, an operation in an ozone generating operation period in which ozone is generated by discharging gas including oxygen at a discharge electrode part and an operation in an ozone generating operation standby period in which ozone is not generated by stopping discharge are alternately repeated, a gas circulating device which circulates gas in the ozone generating apparatus and removes at least nitric acid from the gas which is circulated is connected to the ozone generating apparatus.

An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric is arranged and which is flowed through by a gas flow in the direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical power supply to generate silent discharges. A fabric is arranged in the gas flow. The fabric includes a material combination including at least one wire and at least one electrically non-conductive fiber.

An ozone generator includes a high-voltage electrode and at least one counter electrode, which define an interstice in which at least one dielectric is arranged and through which a gas flows in the flow direction. The high-voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply to generate corona discharges which are discharged from surface discharge locations. The mean sparking distance and the mean spacing between the high-voltage electrode and the at least one counter-electrode are constant. The number of surface discharge locations decreases in the flow direction.

Embodiments of the present invention describe the formation of a current source, a light source, and an ozone generator by using a coated double dielectric barrier discharge system (CDDBD). A system for generating charge may include a CDDBD having at least two electrodes that are separated by a gap filled with a gas medium, wherein each of the at least two electrodes are covered with an insulator that prevents charges in the at least two electrodes from passing through the gas medium, and wherein surfaces of each of the at least two insulators are coated with a material having a secondary electron emission coefficient higher than a material of the insulator. Furthermore, the system for generating the charge may also include a power supply coupled with the CDDBD device that supplies energy to the CDDBD device to form an initial electric field.

The present invention provides a cold plasma ozone generator, comprising: an inlet gas port; at least one in-electrode, said in-electrode having a plurality of holes substantially at a perimeter of the same; said plurality of perimeter holes are in fluid communication with said inlet gas port, said plurality of perimeter holes configured to allow said dry gas to pass therethrough; at least one out-electrode, said out-electrode having at least one hole at the center of the same, said at least one hole configured to allow gas to pass therethrough; said in-electrode and said out-electrode configured to maintain said high voltage AC therebetween; at least one spacer between said in-electrode and said out-electrode, said spacer configured to maintain a constant-width gap between said in-electrode and said out-electrode; an outlet port.

Ozone generator (1) for generating ozone comprising at least one high voltage electrode HVE (2), two low voltage electrodes LVE (3), at least one dielectric (4) and an electric isolator (25) placed in an area between the two LVE (3, 3). The generator (1) further comprises a first gap (7) and a second gap (8) and at least one of the gaps (7, 8) is a corona chamber. The at least one dielectric (4) comprising a first surface (9) is turning towards a HVE-surface (22) and an opposite second surface (10) is turning towards a first surface (17) of one of the LVE (3). The second surface (10) of the dielectric (4) is directly or indirectly supported in its full extension by the first LVE-surface (17), and at least one of the gaps (7, 8) is placed between the first surface (9) of the dielectric (4) and a first HVE-surface (22), said gap is a corona-chamber adapted to develop ozone.