Generation of chlorine-chlorine dioxide mixtures
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United States of America Patent
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Apr 13, 1982
Grant Date -
N/A
app pub date -
Aug 25, 1980
filing date -
Aug 25, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrolytic generator is disclosed having two sealed compartments, separated by a cation exchange membrane, and having a cathode in one compartment and an anode in the other compartment. The cation exchange membrane is positioned directly in line between the anode and the cathode. The anode-containing compartment is provided with a bottom inlet for introduction of extra chlorine. A bypass flow line is provided between the anode and the cathode-containing compartments with a pump for circulating the solution from the cathode-containing compartment into the anode-containing compartment to control the pH therein. The anode-containing compartment is provided with a pH monitor to measure the pH adjacent to the anode and to operate the pump to pump the solution from the cathode-containing compartment to maintain a pH of about 1.8-5.0 in the anode-containing compartment. When the cell is filled with brine and energized, and the anode-containing compartment is maintained at pH 1.8-5.0 while bubbling chlorine therethrough, hydrogen is evolved from the cathode-containing compartment and a chlorine/chlorine dioxide mixture from the anode-containing compartment for use in bleaching or in treating bodies of water, such as, swimming pools, baths, reservoirs, sewage, etc.
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