Method of producing pure water

摘要

PCT No. PCT/JP94/00152 Sec. 371 Date Oct. 6, 1994 Sec. 102(e) Date Oct. 6, 1994 PCT Filed Feb. 3, 1994 PCT Pub. No. WO94/18127 PCT Pub. Date Aug. 18, 1994Raw water is made acidic so that the pH is not more than 4.5 and heated in the presence of an oxidizing agent to decompose TOC components in the raw water, and then deionized, thereby producing ultrapure water having a greatly low concentration of organic matters.