WATER TREATMENT SYSTEM AND POWER GENERATION APPARATUS

摘要

The water treatment system comprises: an aluminate ion addition part 14c for adding an aluminate ion additive 14a to water to be treated containing at least salt content and silica; a first precipitation part 16 provided on the downstream side of the aluminate ion addition part 14c so as to precipitate and separate the solid content in the water to be treated 11; a first pH adjustment part 17c provided on the downstream side of the first precipitation part 16 so as to adjust the pH to a first pH level which precipitates the residual aluminum in the water to be treated 11 by supplying a first pH adjusting agent 17a; a first solid/liquid separation part 18A for separating the solid content in the water to be treated 11; a second pH adjustment part 19c for adjusting the pH of the water to be treated 11 from the first solid/liquid separation part 18A to a second pH level; and a first separation membrane (desalination treatment) apparatus 23A provided on the downstream side of the second pH adjustment part 19c so as to separate the water to be treated 11 into first permeated water 21 A and first non-permeated water 22A by removing the salt content in the water to be treated 11.