Apparatus and method for water purification
First Claim
1. A small portable electrolytic cell having an enclosed electrode and an exposed electrode,an electrolyte in contact with said enclosed electrode, and no electrolyte in contact with said exposed electrode, andsaid cell being operable when immersed in aqueous liquid electrolyte to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode.
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Abstract
A small portable electrolytic cell has an enclosed electrode in a compartment and an exposed electrode open to an electrolyte into which the cell is immersed. The cell is operable when immersed in aqueous liquid containing a chloride salt to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode.
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Citations
26 Claims
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1. A small portable electrolytic cell having an enclosed electrode and an exposed electrode,
an electrolyte in contact with said enclosed electrode, and no electrolyte in contact with said exposed electrode, and said cell being operable when immersed in aqueous liquid electrolyte to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode.
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12. A small portable electrolytic cell comprising
an enclosed compartment, a cathode enclosed in said compartment, said compartment has an opening in a wall thereof, an ion-permeable membrane secured in said compartment wall opening, and an electrolyte in contact with said enclosed electrode, said cell being operable when immersed in aqueous liquid to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode, an anode supported on said compartment adjacent to said membrane and open to said aqueous liquid when the cell is immersed therein, and a plurality of passageways for circulating cooling water through enclosed compartment.
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13. A small portable electrolytic cell comprising
an enclosed compartment, one electrode enclosed in said compartment, said cell being operable when immersed in aqueous liquid to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode, another electrode supported on said compartment and open to said aqueous liquid when the cell is immersed therein, and a perforated tubular shield supported on and surrounding said compartment and said another electrode.
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15. A small portable electrolytic cell having an enclosed electrode and an exposed electrode,
said cell comprises a tubular housing formed in at least three sections, an upper housing section including means for supplying power to the cell, a center housing section comprising an enclosed compartment, one electrode enclosed in said compartment, another electrode supported on said compartment and open to aqueous liquid electrolyte when the cell is immersed therein, a perforated tubular shield supported on and surrounding said compartment and said another electrode, and a lower housing section comprising a closed end tubular cover fitting over and closing said center housing section, an electrolyte in contact with said enclosed electrode, and said cell being operable when immersed in aqueous liquid to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode.
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16. An electrolytic cell having:
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a container adapted to contain an electrolyte, an anode positioned in said electrolyte when said container is provided with electrolyte, a cathode spaced from said anode and positioned outside said electrolyte when electrolyte is provided in said container, an ion-permeable membrane positioned between said anode and said cathode and in contact with said cathode, and a DC power source connected to said anode and said cathode, said cell being operable to generate a gas derived from said electrolyte when electrolyte is provided in said container at the surface of said anode inside said container. - View Dependent Claims (17, 18)
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19. A method of treating aqueous liquid to purify it or to increase its pH comprising the steps of:
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(a) providing a small portable electrolytic cell having an enclosed electrode and an exposed electrode, and an electrolyte in contact with said enclosed electrode, and no electrolyte in contact with said exposed electrode, (b) dissolving a salt in aqueous liquid to be treated to produce an electrolyte, and (c) immersing said cell in said aqueous liquid electrolyte to contact said exposed electrode with said electrolyte and energizing said cell to generate chlorine or other oxidant when said exposed electrode is an anode, or to increase the pH of said liquid when said exposed electrode is a cathode. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. An electrode unit to be positioned and secured in an opening in a wall of a container for an aqueous electrolyte,
said electrode unit comprising an anode, an ion-permeable membrane, and a cathode secured together in intimate contact as a unitary removable electrode unit to be positioned in a container wall opening with said anode facing inwardly of said container to contact electrolyte when provided in said container and said cathode facing outwardly of said container out of contact with said electrolyte when provided in said container.
Specification