METHOD AND SYSTEM FOR PROVIDING PURIFIED WATER

摘要

A method of providing at least two outlet purified water streams from a water purification system comprising at least the steps of: (a) providing a first purified water into a first reservoir able to provide an outlet purified water stream; (b) passing at least a portion of the first purified water from the first reservoir through a water purification process to provide an ultra-purified water stream; (c) passing the ultra-purified water stream to a second reservoir; (d] providing an excess of ultra-purified water into the second reservoir beyond a pre-determined quantity; (e) allowing the excess ultra-purified water in the second reservoir to flow from the second reservoir into the first reservoir; and (f) providing an outlet from the water purification system of an ultra-purified water stream from the second reservoir. In this way, the water purification system has a second reservoir which provides a buffer volume of ultra-purified water immediately available for output through a dedicated line for high purity purposes such as analyser feed, and also a first reservoir of purified water for other less high quality purposes, available as a separate outlet stream. Excess ultra-purified water in the second reservoir is returned to the first reservoir.