High residence time mixing tank system
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United States of America Patent
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May 12, 2015
Grant Date -
Dec 1, 2011
app pub date -
May 26, 2011
filing date -
May 27, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A water purification system for continuously disinfecting water in a holding tank that provides uniform mixing and increased residence time. The system comprises a double disinfectant tank for potable water, comprising an inner tank and an outer tank. The inner tank being located wholly within and in the lower portion of the outer tank. The water and disinfectant inlet feeds water directly into the inner tank through a tube extending into the inner tank. The inner tank is sealed off from the outer tank except for limited openings located primarily in the lower half of the inner tank wall. The inlet tube preferably extends at least about 50% of the height of the inner tank, to a point above the location of the limited openings in the lower half of the inner tank. This results in better mixing, especially when the flow through the limited openings is high enough to create turbulent flow, and greater residence time compared to baffled tanks.
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