| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an organic wastewater treatment method constituted so as to remove the closure of a separation membrane caused at the time of membrane separation treatment performed after biological treatment using a pressure floating method or a froth separation method together using surfactant treatment. <P>SOLUTION: In a solid-liquid separation method using membrane separators 7 and 8 after organic wastewater is treated in a biological treatment tank 1, the treatment due to a surfactant supplied from a line 4 is performed along with pressure floating treatment and/or froth separation treatment in the front stages of the membrane separators 7 and 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
