Patent ID: 6627053
Filing Date: 2003-09-30
Classification: C02F

Abstract:
A water treatment device comprising:electrolyzing and sterilizing means, comprising an electrolytic tank to put water in and an electrode provided in the electrolytic tank in order to electrolyze the water, for pouring water into the electrolytic tank, energizing the electrode, and electrolyzing the water, to sterilize the water; a water treating path connected to a pool storing water for pouring the water in the pool into the electrolytic tank and returning to the pool the water in the electrolytic tank; a residual chlorine sensor for measuring the residual chlorine concentration of water; and control means for finding a difference between the residual chlorine concentration measured by the residual chlorine sensor and the required residual chlorine concentration previously determined, finding an insufficient amount of residual chlorine from the difference and the quantity of water stored in the pool, and supplying current to the electrode in an amount required to produce the insufficient amount of chlorine by the electrolysis.