| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a device for the treatment of fluoric acid waste liquid, capable of performing a NF membrane separation of fluoric acid by remarkably reducing metal elution from a constituent member. <P>SOLUTION: In a device for the treatment of fluoric acid waste liquid, provided with a NF membrane separation means which supplies the fluoric acid waste liquid by being pressurized with a pressurizing means, the device is constituted of a resin material having corrosion resistance to fluoric acid at least in the surface of a liquid contact part of the constituent member. Pressurization by the pressurizing means is less than 1 MPa and a temperature adjustment means for adjusting the liquid temperature of fluoric acid waste liquid to between 0-25°C is arranged in a front stage of the process of the membrane separation means. <P>COPYRIGHT: (C)2013,JPO&INPIT |
