G - Physics – 01 – N
Patent
G - Physics
01
N
150/19
G01N 31/22 (2006.01) A61L 2/28 (2006.01) G01N 1/00 (2006.01) G01N 31/16 (2006.01) G01N 33/18 (2006.01)
Patent
CA 2040114
METHOD AND SYSTEM FOR CONTINUOUSLY MONITORING AND CONTROLLING A PROCESS STREAM FOR DECHLORINATION RESIDUAL Abstract of the Invention A method and system for directly monitoring and controlling a continuous process stream for dechlorination residual is provided. A sample stream to which a dechlori- nation agent has been added to completely eliminate a residual disinfectant, is continuously drawn off. An analyzing agent, different from the disinfectant, in an amount in excess of that needed to completely react with the dechlorination residual, is added to the sample stream to leave an unreacted amount of analyzing agent. Suffi- cient time is provided for the analyzing agent to complete- ly react with the dechlorination residual. Thereafter, the sample stream is continuously analyzed to determine the amount of unreacted analyzing agent remaining in the process sample. Based on the amount of analyzing agent added to the process sample and the amount of unreacted analyzing agent remaining in the sample after reaction, the amount of dechlorination residual is continuously deter- mined. The amount of dechlorination agent added upstream to the process stream is continuously selectively varied using the determined amount of dechlorination residual present in the process sample. 7833-3 (CIP)1
Huebner Wayne B.
Stannard James W.
Stockinger Gregory E.
Van Grouw Albert III
Borden Ladner Gervais Llp
Wallace & Tiernan Inc.
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