Challenge: A Florida orange juice concentration plant was experiencing dramatic biofouling accumulation in the cooling tower serving a taste evaporator. Carry-over of nutrients from the evaporator entered the water-cooling system through a barometric condenser causing biofouling buildup. The issue was rst addressed by treatment with chlorine and bromine, but was not successful. Chlorine dioxide proved slightly eective, but was determined too costly due to the cooling tower system’s high oxygen demand. Mexel was brought in for testing for its potential to address the fouling in an innovative and economical manner. Treatment: The circulation rate of the cooling water system was 4,800 gpm with a volume of 28,000 gallons. A dosage rate of 4 ppm for 20 minutes daily was chosen by Mexel to ee

Join for free to read