IMMERSION-TYPE MEMBRANE SEPARATION APPARATUS

摘要

Disclosed is an immersion-type membrane separation apparatus (10) having a novel structure, which enables a practically applicable level of cleaning of a separation membrane (22) by means of an ultrasonic wave generated by an ultrasonic transducer (24) and can exhibit steady filtration performance for a long period. An ultrasonic transducer (24) for cleaning and removing matters adhering to a separation membrane (22) during the filtration of raw water (18) is provided. The matters adhering to the separation membrane (22) is cleaned and removed by means of an ultrasonic wave emitted from the ultrasonic transducer (24). The separation membrane (22) is made of polytetrafluoroethylene (PTFE).