Cooling Tower Treatment For Soft Make-up Water

cooling towers having very soft waters which are more corrosive, have a Rysnar Index over 7 and calcium 25-75 ppm in the make-up water. It is an excellent dispersant for calcium phosphate, iron oxides and clay. This product is used where heavy metals and zinc is not allowed in effluent waters. LC 120 is a hydroxy-phosphonoacetic acid with polymers and copolymers to control scaling. It also has inorganic phosphate and sodium tolytriazole to prevent corrosion and pitting of all metal surfaces. ApplicationInjected directly into the circulating pipe upstream from the condenser. Cycles of concentration will vary from 5-20 as a probable upper limit. For higher limits consult our laboratory. DosageFeed LC 120 from a chemical mix tank or directly from the drum by means of a proportioning pump at the rate of 0.5 pound/1,000 gallons of make-up water. Adjust the dosage to maintain 5-10 ppm of orthophosphate in the circulating water. A pH of 8-8.5 must be maintained.