| 摘要 |
A water-treating agent which comprises a specific nonionic polymer and a phosphorus compound and can show the ability to inhibit the deposition of a silica-based scale under wide ranges of water quality conditions and temperature conditions; and a method of treating water. The inhibitor for silica-based scales comprises a nonionic polymer and a phosphorus compound, the nonionic polymer being a polymer formed by the reaction of an unsaturated double bond and comprising units derived from at least one monomer selected from a group consisting of (meth)acrylamide, N-substituted (meth)acrylamides, and N-vinyllactams and/or one or more polymers having an ether group and selected from a group consisting of alkyl alcohol/polyalkylene oxide adducts, aliphatic monocarboxylic acid/polyalkylene oxide adducts, and polyvinyl alcohol/polyalkylene oxide adducts. |
