| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an effective washing method and an effective washing device of a membrane module and a method for stably operating the membrane module for a long period. <P>SOLUTION: The method for washing the membrane module in a membrane filtering method obtaining filtrate by filtrating water to be treated with the membrane module is characterized in that a primary side and a secondary side of the membrane module are immersed in chemical for washing, the chemical for washing of the primary side of the membrane module is discharged to the outside of the system of the membrane module, the water to be treated is supplied to the membrane module, the membrane filtration is restarted, the filtrate of an initial period for restarting the membrane filtraion is stored in a chemical residual water tank, the filtrate of an initial period for restarting the membrane filtraion stored in the chemical residual water tank is used in reverse pressure water washing compressedly sending the washing water from the secondary side to the primary side of the membrane module. <P>COPYRIGHT: (C)2013,JPO&INPIT |
