Japan Intellectual Property Rights: PRODUCTION METHOD AND PRODUCTION DEVICE OF WATER FOR PURE WATER, PURE WATER PRODUCTION METHOD AND PURE WATER PRODUCTION SYSTEM

Japan, Feb. 27 -- NOMURA MICRO SCI CO LTD has got intellectual property rights for 'PRODUCTION METHOD AND PRODUCTION DEVICE OF WATER FOR PURE WATER, PURE WATER PRODUCTION METHOD AND PURE WATER PRODUCTION SYSTEM.' Other related details are as follows:

Application Number: JP,2023-131122

Category (FI): C02F1/42@B,C02F1/42@A,C02F1/32,C02F1/28@D,B01D61/58,B01D21/01,102,C02F9/00,C02F1/44@H,C02F1/52@Z,C02F1/44@D,C02F1/44@A

Stage: PROBLEM TO BE SOLVED: To provide a production method and a production device of water for pure water capable of efficiently removing suspended substances in raw water, while capable of preventing a transmission flow rate of a reverse osmosis membrane device from lowering by residual aluminum for a long period of time, and also to provide a pure water production method and a production system.SOLUTION: A production method of water for pure water includes: a step of adding a poly aluminum chloride of high alkalinity to raw water to obtain first treatment water; a step of passing the first treatment water to spherical active carbon and applying an active carbon treatment to obtain second treatment water; and a reverse osmosis membrane step of applying a reverse osmosis membrane treatment to the second treatment water.SELECTED DRAWING: Figure 1 (Grant)

Filing Date: Aug. 10, 2023

Publication Date: Feb. 21, 2025

The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100

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