Evaporative treatment method for aqueous solution

摘要

The present invention provides an aqueous solution evaporative treatment method that makes it possible to efficiently perform evaporative treatment of a 5 silica-containing aqueous solution. The aqueous solution evaporative treatment method comprises a seed crystal mixing step of adding to and mixing with a silica-containing aqueous solution a silicate as seed crystals and an evaporative concentration step of evaporatively concentrating the aqueous solution together with the seed crystals. The silicate is preferably magnesium silicate and/or calcium 10 silicate. (8701548_1) :RTK Fig.1 //Aqeous - 13 2 n o Condensed 21a water liqu i 2q7 Concentrated liquid (8701548_1) :RTK