| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem, in reverse osmosis membranes used for advanced treatment in waste water recycling, seawater desalination, etc., that organic substances dissolved in the water is adsorbed to the surface of the reverse osmosis membrane which causes clogging, reduction of the volume of permeating water, and increase of the frequency of reverse osmosis membrane module exchange. <P>SOLUTION: To remove dissolved organic substances efficiently: a ceramic filter with a honeycomb structure having a large adsorption surface area is used; the communicating pores of the ceramic filter are used as flow channels; and some of the flow channels are plugged, and the water to be treated is made to pass through partition walls and is treated by the partition wall with a reverse osmosis membrane, which has an amide group-containing high molecular weight polymer. Because the water to be treated is filtered when it passes through the partition walls of the flow channels, it becomes cleaner and adhesion of organic substances to the reverse osmosis membranes can be reduced. Moreover, since the flow channels are wide, on the order of micrometers, clogging does not occur easily. <P>COPYRIGHT: (C)2012,JPO&INPIT |
