70-01: Control of Cooling Tower Mist Cooling Tower Water Blowdown Treatment

70-01: Control of Cooling Tower Mist Cooling Tower Water Blowdown TreatmentRegulation I of the Texas Air Control Board stipulates that mist emitted from cooling towers shall not cause a highway visibility hazard. At the time this regulation became effective we did not have a solution to our intermittent visibility problem, although this problem had been under study for about two years. We filed an application to obtain a variance from the board until we could find a satisfactory solution and put it into effect. The variance

system metallurgy corrosion

and impact upon the environment

challenges faced

and in cold climates freeze-thaw deterioration

This non-conventional design tower would serve as the ultimate heat sink for the reactor plant following a postulated design basis accident

a result rarely achieved using chlorine alone or chlorine with other biocides

enhancement of the quality of the tower circulating water is included

Evaluation and successful results of the use of a weak organic acid and amine compound to increase hardness salt solubility at alkaline pH levels in an open recirculating cooling system

mechanical draft

The new treatment method resolved biological fouling issues and eliminated the need for shot feeds of a tanker truck load of bleach (~5000 gallons) every one to two weeks and the need for normal continuous dosing of chlorine and sodium bromide

related to the operation and longevity of the cooling system

microbiologically influenced corrosion