| 摘要 |
PURPOSE:To prevent adhesion of a silica insoluble component to piping by adding a polymer consisting of two different types of constitution unit represented by a specific formula to geothermal water, and by separating the silica insoluble component through floatation processing. CONSTITUTION:A copolymer consisting of more than one type of constituent unit A shown by a formula I (R<1> represents hydrogen, a methyl group; Y, O, NH; A an alkylene group with carbon number of 1-4, a hydroxyalkylene group with carbon number of 2-4, a phenyl group; and R<2>, R<3> hydrogen, an alkyl group with a carbon number of 1-12, an aralkyl group) and more than one type of constituent unit B shown by a formula II (R<5> represents hydrogen, a methyl group; Z an aryl group with a carbon number of 6-8, etc.). Geothermal water is added to this polymer, and this mixture is subjected to floatation processing to separate and remove the silica insoluble component out of geothermal water. |
