ANTIFOULING METHOD OF SEAWATER INTAKE DEVICE AND ANTIFOULING DEVICE

PROBLEM TO BE SOLVED: To suppress difference of electric potential of each part of an anode so as to surely obtain antifouling effect and also to keep durability of coating high, executing the antifouling that prevents sticking of marine organisms to a seawater intake device by using an electrically-conductive coating provided on an antifouling object surface as the anode and using a counter electrode as a cathode and thereby making direct current flow between the electrodes. SOLUTION: In the case when the antifouling of a concrete-made water passage 1 is executed, opposite both banks of the antifouling object surface are covered with antifouling electrode panels 2A and 2B in which a lining of an electrically-conductive material is applied on a surface of a metal-made plate and a lining of an insulating material is applied on a rear face of the plate, and electrodes having a relatively small surface area are provided respectively at an opposite side of each bank as counter electrodes 3A and 3B of each antifouling electrode panel 2A and 2B. Thus, sticking of the marine organisms on the surface of the anode is prevented by flowing the direct current between the antifouling electrode panels and the counter electrodes 3A and 3B of each group by using the former as anode and the later as cathode.