Witco installed two automatic chemical controls for blowdown on cooling towers. The system maintains a set conductivity for the water in the tower. It saves water (and chemical additives) over periodically adding fresh water on a timed bases.
The system has reduced the quantity of blowdown water and chemical additive use by 50%. Approximately 720,000 gallons of water is saved per year.
Details of Reductions
Additional Information :
The two units purchased cost $2,000 each for a total of $4,000. At $0.001/gallon, water use savings amounted to $720 annually. More significantly, chemical additives were reduced saving $3,300 annually. Wastewater disposal costs for clean cooling tower water runs about $0.025/gallon, for a savings of $18,000.