12-10: Field Evaluation and Verification of Biological Control in Operating Fans & Associated Equipment many users are or will

many users are or will be facing growing competition for the use of freshwater resources

Flute geometry (cross-corrugated

and what materials and processes give the best results

The historical comparison to chromate is not appropriate because of chromate's greater oxidizing ability

Control of water treatment chemistry utilizing instrument measurement of system water flow and cycles of concentration provides precise control of chemical additives

12-10: Field Evaluation and Verification of Biological Control in Operating Fans & Associated Equipment many users are or willPulse Electric Field Devices (PEFDs) have been used as the sole source of water treatment in evaporative cooling water systems for over 10 years often with good results. Several field evaluations will be presented that provide detailed data on microbiological control entirely by the PEFDs. This paper will present both field and laboratory test data independently obtained from operating cooling tower water systems that rely solely on PEFDs for