Molybdate-based chemicals have been used as corrosion inhibitors in cooling tower systems for several years.  Although they provide superior performance, levels of molybdate have been reduced because of large price increases.  It has become more necessary to control molybdate levels to optimize performance versus cost in corrosion inhibition.  A new one line analyzer has been developed that can measure molybdate as molybdenum (Mo6+) with minimum maintenance.  This analyzer can be used to monitor remotely when connected to data acquisition system with web based reporting.  Two of these complete systems have been evaluated for several months at two sites in Texas. Comparisons have been conducted versus both bench tests.  This paper will discuss results of current testing and features of the web-based monitoring system with graphs and charts illustrating its performance.

08-23: Tracking Molybdate in Cooling Water

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