METHOD OF DESALTING, APPARATUS FOR DESALTING, AND BUBBLE GENERATOR

摘要

A method of desalting which comprises generating fine bubbles in a raw water containing a salt and subjecting the raw water containing the fine bubbles to filter membrane separation. By the method, even when an operating pressure to be applied on the raw-water side is low, a sufficient effective pressure acts on the filter membrane to enable the water to be efficiently filtered. Even with an operating pressure on almost the same level as conventional ones, treated water can be obtained in a larger amount. Also provided is a desalting apparatus which comprises a storage means (1), a supply means (2), and a bubble generator (8) which generates fine bubbles in a raw water to be fed through a pressurizing means (3), and in which the raw water containing the fine bubbles is separated with a filter membrane by means of a separation means (4) disposed downstream from the bubble generator (8).