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Ozone application for cooling tower water.

Author(s) : STRITTMATTER R. J., YANG B., JOHNSON D. A.

Type of article: Article

Summary

The paper presents a comprehensive study (bench-top laboratory investigations, pilot scale testing, and critical monitoring and evaluation of field applications) addressing the effects of ozone as a stand-alone cooling water treatment program. Several conclusions concerning the application of ozone as a "total" cooling water treatment program have been demonstrated: corrosion control in ozone-alone treated cooling water systems is completely determined by the water chemistry of the system and has no dependence on the presence of ozone at typical use levels (0.05-0.10 ppm). However, misapplication of ozone can lead to accelerated corrosion, as demonstrated by high corrosion of mild steel and yellow metals in the presence of 1 ppm of ozone. Ozone has no direct effect on the precipitation of mineral scale in a recirculating cooling water system. Deposition on the heat-exchange surfaces is not determined by the presence of ozone either. The strong biocidal properties of ozone resulted in excellent microbiological control in all pilot cooling tower investigations, and in the case history studied.

Details

  • Original title: Ozone application for cooling tower water.
  • Record ID : 1997-0251
  • Languages: English
  • Source: ASHRAE Journal - vol. 38 - n. 5
  • Publication date: 1996/02/05
  • Document available for consultation in the library of the IIR headquarters only.

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