| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent slime formation on the surface of an ion-exchange membrane or in channels of concentrate brine and desalted water of an electrodialysis apparatus without using a specific sterilizing agent used conventionally in desalting treatment at a low concentration and a low salt rejection rate. <P>SOLUTION: In desalting treatment raw water such as well water and drainage from an infrastructure by using an electrodialysis cell 1, the concentrate brine from the electrodialysis cell 1 is subjected to electrolysis in an apparatus 42 for generating water by electrolysis to produce electrlytic formed acid water, which is introduced into a desalted water circulation system and a concentrate brine circulation system of the electrodialysis cell 1 or a treatment raw water system. Because the electrolytic fromed acid water has a proper sterilizing power, a chemical agent for slime prevention and a supply system thereof are not necessary to be especially prepared. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
