| 摘要 |
A method of sanitizing a water body in a container having a recirculation system for continuously recirculating water from and to the container is described which comprises contacting an electrochemical available halogen sensor with the recirculating water. The available halogen concentration in the recirculating water is measured and displayed on a control means and a predetermined value for the available halogen concentration is established on the control means. The control means is connected to an electrolysis means for electrolytically producing an available halogen. The electrolysis means is activated to produce an available halogen when the measured available halogen concentration is below the predetermined value. The available halogen is added to sanitize said recirculating water; and the sanitized water returned to the container. The method and the novel apparatus for employing the method provide a control system for hot tubs, spas, and swimming pools in which the production and addition of the available halogen is based on the available halogen demand of the water body. Accurately controlled available halogen concentrations are automatically provided and substantial energy and cost savings are realized as the electrolytic cell is only operated when the available halogen concentration is being depleted.
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