| 摘要 |
The present invention relates to a separation membrane unit which discharges treated water filtered by being dipped in a bioreaction tank of a sewage treatment plant. In a supporting frame (10), air nozzles (6) are mounted on both left and right sides of a lower branch pipe (4) which communicates with a horizontal diffuser pipe (2) connected to a blower and performing air supply and sludge discharge. In an upper portion of the supporting frame (10), a separation membrane module (30) is coupled with each flange (24). In the flange (24), treated water nozzles (22) are mounted on both left and right sides of a filtering pipe (20) connected to a filtering pump and discharging treated water. The separation membrane modules (30) are configured to be disposed in two rows in the supporting frame (10). In the separation membrane module (30), multiple U-shaped hollow fiber membranes (32) are fixedly disposed between an upper head (34) and a lower head (36). The upper head (34) forms a space portion (35) which collects the treated water filtered in communication with a water hole (32a) of the hollow fiber membrane (32). The lower head (36) is configured for the hollow fiber membrane (32) to be wound in a U shape around a fixing bar (38) penetrating an inner portion thereof. The lower air nozzle (6) injects air during guide to a through-portion (37) of the lower head (36), and thus a contaminant attached to a surface is separated during a filtering operation of the hollow fiber membrane (32). Accordingly, water treatment capacity resulting from filtering is improved and follow-up management can be facilitated. |
