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CONTROL OF OZONE DISINFECTION BY EXHAUST GAS MONITORING
Citation:
Venosa, A. AND M. Meckes. CONTROL OF OZONE DISINFECTION BY EXHAUST GAS MONITORING. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-83/146 (NTIS PB84150648), 1983.
Description:
In this paper it was demonstrated empirically that disinfection with ozone can be controlled by monitoring the exhaust gas ozone concentration exiting the contactor. This method is more reliable than measuring dissolved ozone because of the inherent difficulties and inadequacies of the state-of-the-art dissolved residual techniques. The advantages of measuring exhaust gas ozone are summarized as follows: True ozone is being measured, free of interferences, ozone demand of the effluent and transfer efficiency of the contactor are automatically accounted for in one measurement, the method is easily automated, instruments are already available on the market for measuring ozone in the gas phase with accuracy, precision, and low level sensitivity and ozone is more stable in the gaseous phase than in the liquid phase, and consequently the operator does not have to concern himself with dissipation of the ozone from the time it leaves the contactor to the time it arrives at the analyzer.