F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
165/34
F28F 19/00 (2006.01)
Patent
CA 1081604
FOR COOLING TOWER SCALING CONTROL ABSTRACT A method for controlling the level of scale forming species in open recirculating cooling tower systems comprising: A) maintaining in the cooling tower water from 0.5 to 300 ppm by weight of a scale inhibitor; and B) continuously removing a portion of the cooling tower water to form a sidestream, treating the sidestream in a lime-soda softening process to remove at least a portion of the softenable species thereby forming a softened sidestream and a sedimentation sludge; and C) returning the softened sidestream to the cool- ing tower water; and D) collecting and disposing of the sedimentation sludge.
267969
Johnson Donald A.
Nass Roger
Nalco Chemical Company
Smart & Biggar
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