Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1994-06-29
1996-08-06
Hruskoci, Peter A.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210728, 210730, 210731, 210917, C02F 156
Patent
active
055430562
ABSTRACT:
A method for treating water using natural polymers that provide an alternate and improved means to achieve enhanced coagulation is described. A method for removing particles, color, and color from drinking water, comprising adding a primary coagulant such as a natural, cationic polymer like chitosan or a cationic starch and a coagulant aid such as bentonite to drinking water to form a mixture. A preferred concentration weight ratio of natural polymer to clay mineral is between 1:5 and 1:20.
A composition for removing particles and color from drinking water is described that includes a natural, cationic polymer coagulant and clay mineral in a total amount effective to coagulate suspended material in the drinking water. The composition includes a weight ratio natural polymer coagulant/clay mineral of between about 1:5 to about 1:20.
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Harleman Donald R. F.
Murcott Susan E.
Hruskoci Peter A.
Massachusetts Institute of Technology
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