| abstract |
(57) [Summary] [PROBLEMS] To safely treat a large amount of water to be treated without worrying about secondary pollution. SOLUTION: The inside of a container 2 is partitioned into a cathode portion 9 and an anode portion 8 by a diaphragm 5, a conductive substance is put in the anode portion 8, and the cathode portion 9 is covered with seawater or a mixed water containing seawater. The treated water is charged, and the anode 3 and the cathode 9 in the anode 8 are treated. A voltage is applied between the cathodes 4 to generate a treatment species in the cathode portion 9. The treatment species causes plankton in the water to be treated, It treats treated water by killing plankton cysts, bacteria and viruses. |