Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1996-08-21
1997-09-16
McCarthy, Neil
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210728, 210731, 210734, 210735, C02F 156
Patent
active
056676972
ABSTRACT:
This invention relates to the clarification of natural waters containing turbidity-causing components. This method comprises the addition of a stable colloidal silica suspension and water based polymeric coagulant to the turbid water. The components of the invention may be added independently, or blended together so that addition is simultaneous. The colloidal silica may also be conditioned by passing over a cationic exchange resin prior to addition of cationic polymer.
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Choo Pek Lee
Kobayashi Michio
Picco David A.
Salmen Kristine S.
Drake James J.
McCarthy Neil
Miller Robert A.
Nalco Chemical Company
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