Water decontamination apparatus and method
First Claim
1. A method for water purification where an arc gap having an extent is formed by a stationary electrode on one side of a passageway carrying water to be purified and a movable electrode on the opposite side of said passageway, said stationary electrode and said movable electrode having a voltage applied from a power supply, said power supply measuring a current through said arc gap;
- decreasing said arc gap extent when said power supply output current is below a first threshold, and increasing said arc gap extent when said power supply output current is above a second threshold.
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Abstract
A process and apparatus for water purification has a stationary electrode opposing a movable electrode which are positioned about a passageway for the water to be purified. The stationary electrode and movable electrode form an arc gap, and the arc gap is fed with a voltage from a pulsatile power supply. The arc gap is reduced when the current is below a first threshold and increased when the current is above a second threshold, and the arc gap change is realized by controlling a motor attached to feeder rollers coupled to the movable electrode. The apparatus causes the formation of oxide nano-particles providing durable bactericidal action.
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Citations
19 Claims
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1. A method for water purification where an arc gap having an extent is formed by a stationary electrode on one side of a passageway carrying water to be purified and a movable electrode on the opposite side of said passageway, said stationary electrode and said movable electrode having a voltage applied from a power supply, said power supply measuring a current through said arc gap;
decreasing said arc gap extent when said power supply output current is below a first threshold, and increasing said arc gap extent when said power supply output current is above a second threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A process for purifying a fluid, the process comprising:
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passing said fluid through an electrode gap having a variable extent, said electrode gap formed from a movable electrode and a stationary electrode; applying a voltage across said electrode gap; increasing said electrode gap extent when the current flowing through said electrode gap is above a first threshold, and decreasing said electrode gap extent when the current flowing through said electrode gap is below a second threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for the decontamination of a fluid, the fluid passing through a channel which includes a discharge gap formed across the extent of a stationary electrode and a movable electrode, the discharge gap being substantially orthogonal to said channel, the process for decontamination generating nano-particles of material principally from said movable electrode, the process having the steps:
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applying a voltage across said movable electrode and said stationary electrode and measuring a current flowing through said discharge gap; decreasing the extent of said discharge gap by feeding said movable electrode when said current is below a first threshold value; increasing the extent of said discharge gap by withdrawal of said movable electrode when said current is above a second threshold value that is greater than said first threshold value; whereby said first and second threshold values are selected for an increased production of said nano-particles, said nano-particles including at least one of the copper oxides CuO and Cu2O, silver oxides Ag2O, iron oxides Fe2O3, Fe3O4, or titan oxides TiO, Ti2O3.
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Specification