18-28: Novel Galvanized Cooling Tower Corrosion InhibitorGalvanized coatings for cooling tower systems have been used since the 1950s. The galvanizing process binds a layer of zinc to steel and serves as a sacrificial anode to prevent corrosion of the underlying steel structure. However, galvanized cooling towers that have not been properly treated at start up may experience rapid formation of a soft, white, fluffy, non protective zinc corrosion product known as white rust. Consequently, the corrosion of

Deducting these values from those verified in the plant for the total fouling

Conventional alkaline treatments utilize phosphonate for calcium carbonate scale control and azole (tolyl triazole) for copper corrosion inhibition

Although this paper is only indirectly related to the subject of this symposium and is being delivered by a biologist with little knowledge of cooling towers

using case studies and practical scenarios as illustrations of their impact for users

Some of these features are not obvious to the casual observer and if not chosen correctly can adversely affect tower performance

Proper polymer monitoring allows one to understand true demand factors versus other artifacts that might negatively impact control

to be effective against biofilm-forming bacteria

Root cause investigations of failures in heat exchangers that are used in cooling water service often reveal that design conditions were a major contributor to the failure

those which operate solely by natural means must appear large and clumsy

major advances have ocurred in the technology of cooling water scale and corrosion inhibitors

OIW quantification can be achieved in samples containing stable content and type of oils

by the EPA