| abstract |
Water treatment apparatus using a reverse osmosis membrane, comprising a first water treatment unit (3) to perform the pretreatment of the water to be treated, which includes a separation membrane and a second water treatment unit (4 ) to perform the main treatment of the water to be treated. The separation membrane (35) includes a plurality of nodes (5), and a plurality of fibrils (6) extending from the nodes (5), the fibrils (6) having a width smaller than the width of the nodes ( 5) so that, on the surface of the separation membrane (35), the area occupied by the fibrils (6) is larger than the area occupied by the nodes (5). |