Abstract
This paper presents an alternative water-purifying facility. This facility uses only the iron-electrolysis as coagulants under the high-oxygen condition. Any chemical coagulants are not required to remove pollutants in the water. So we can provide a peaceful water-purifying facility for the environment of the earth. A prototype model is constructed and tested to verify the excellent practicability of the proposed water-purifying facility. We also develop a pilot plant for the proposed facility. The experimental results demonstrate that the proposed water-purifying facility is most suitable as a coagulator for the water polluted by red clay in Okinawa prefecture.