METHOD AND CHEMICAL FOR TREATING WATER

摘要

PROBLEM TO BE SOLVED: To provide a method and to obtain a chemical for treating water capable of preventing deposition of scale made from hardness components onto metal and non-metal members even in a water system using high hardness water. SOLUTION: The water treating chemical includes a high molecular electrolyte polymer of a binary copolymer of a (meth) acrylic acid base monomer unit and a maleic acid based monomer unit. It is preferable to further add to the water treating chemical a (meth) acrylic acid based homopolymer and/or a maleic acid based homopolymer, an azole based compound and a fungi suppressing agent. This invention can be applied favorably to a cooling water system for highly concentrated operation.