Patent ID: 7217346

Claim:
A water treating apparatus which comprises: a casing having an inlet located at a lower end and an outlet located at an upper end; at least a pair of porous conductive materials being located inside the casing; a first conductive material being located near the inlet and a second conductive material being located near the outlet; a porous insulator being centrally located inside the casing, and separating the conductive materials; a heater being located inside and near the lower end of the casing in a portion underneath the first conductive material where for-treatment water flows in the inlet; a pH adjuster being located near the inlet; and a controller being located externally to the casing; wherein the controller controls the application of potentials of opposite polarities to the conductive materials, and reverses the polarities of the potentials at predetermined time intervals so as to adsorb the microorganisms on the conductive materials; the controller controls the pH adjuster; the controller controls the heater; the heater heats the for-treatment water and the conductive materials; the pH adjuster adjusts the pH of the for-treatment water between pH 2 and pH 11 so that the heat resistance of microorganisms is degraded.