Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1992-04-08
1993-05-25
Drodge, Joseph W.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
62 85, 62188, 62310, 137 14, 13710125, 13710127, 137907, 137909, 210 86, 210 97, 210123, 210136, 210167, 2101981, 210749, 210808, 261DIG11, C02F 100
Patent
active
052136949
ABSTRACT:
An apparatus and method for controlling the amount and concentration of make-up water and chemicals introduce into the recirculating water of a cooling tower system. A float operated make-up valve controls the addition of make-up water to the tower. As make-up water is added to the tower a vacuum is produced at an injector valve which draws chemicals from a chemical holding tank into the make-up water, thereby allowing precise control of the chemical concentration in the make-up liquid. Further, a bleed valve is provided which is responsive to the vacuum produced at the injector valve and bleeds a portion of the recirculating water to waste.
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American Hydro Systems, Inc.
Drodge Joseph W.
Kananen Ronald P.
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