| abstract |
The present invention relates to a water treatment method for suppressing metal corrosion and scale formation in the cooling system, more specifically 0.01 to less than 2 ppm phosphorus (P), 0.1 to 50 ppm acrylate-based in various water quality It provides a water treatment method comprising treating and maintaining a copolymer, 0.01-5 ppm zinc ion, 0.1-20 ppm gluconate, and 0.1-20 ppm molybdate. The water treatment method of the present invention suppresses the corrosion reaction that may occur on the metal surface in a wide range of water quality to minimize the conditions where corrosion can occur and at the same time significantly suppress the scale of the divalent metal salt. |