POROUS MEMBRANE FILTRATION APPARATUS

摘要

PURPOSE:To prevent the choke of a membrane of a porous membrane filtration apparatus. CONSTITUTION:A raw water chamber 14 and a permeated water chamber 16 are installed in a tank body 10 while being partitioned by a porous membrane 18. The porous membrane 18 is set to tilt in the way the membrane face in the raw water chamber 14 side is in the lower side. A gas scattering pipe 20 is put below the porous membrane 18. Consequently, when filtration treatment is carried out while bubbles are jetted from the gas scattering pipe 20, bubbles rising upward and rising water flow collide against the porous membrane 18 and the substances adhering to the membrane face of the porous membrane 18 are removed and a large quantity of permeated water is obtained.