Method and system for continuously monitoring and controlling a

Details Method and system for continuously monitoring and controlling a Method and system for continuously monitoring and controlling a

1996-11-18

1999-02-09

Ludlow, Jan

Chemistry: analytical and immunological testing

Condition responsive control

436 32, 436122, 436125, 210739, 210753, 210764, 422 62, 422 81, G01N 3508

Patent

active

058693424

ABSTRACT:
A method for determining the amount of residual disinfectant removing agent in a process stream to which the disinfectant removing agent has been added to completely remove a disinfectant residual, comprising the steps of: (a) drawing off a sample of the process stream; (b) mixing an acidic iodate solution and an iodide solution to produce an iodine analyzing agent; (c) adding to the sample the iodine analyzing agent in an amount sufficient to react with the residual disinfectant removing agent and leave an unreacted amount of residual iodine; (d) allowing sufficient time for the iodine to react with the residual disinfectant removing agent; (e) analyzing the sample to determine the amount of residual iodine remaining in the sample, and (f) determining the amount of residual disinfectant removing agent in the sample based on the amount of iodine analyzing agent added and the amount of residual iodine remaining in the sample after reaction.

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Finger et al., "Development of an on-line zero chlorine residual measurement and control system" J. Water Pollut. Control Fed. (1985) 57(11) 1068-73.

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