| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a desalting method for high concentration salts-containing organic waste water, and an apparatus therefor. <P>SOLUTION: Salts-containing treated water obtained by treating the high concentration salts-containing organic waste water by the combination of biological treatment, coagulation treatment, and solid-liquid separation membrane treatment is subjected to multistage concentration using a plurality of evaporators to deposit and separate salts. Organic matter in the salts-containing treated water is removed by activated carbon absorption treatment or/and ozone oxidation treatment beforehand, and then fed to a first stage evaporator. A calcium salt, and the like, contained in the salts-containing treated water are removed beforehand as carbonates before or after the first stage evaporator. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
