Method for improving the utilization of polyelectrolytes in dewa

Details Method for improving the utilization of polyelectrolytes in dewa Method for improving the utilization of polyelectrolytes in dewa

1986-07-08

1987-12-01

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210732, 210738, C02F 156

Patent

active

047103043

ABSTRACT:
This invention relates to a method for improving the utilization of water-soluble, high molecular weight (molecular weight above about 1,000,000) polyelectrolytes in the dewatering of aqueous suspensions. By aging a mixture of the polyelectrolyte and water for a period of at least 6 hours to form an aged solution the amount of polyelectrolyte required to effectively dewater an aqueous suspension may be reduced to as little as 50% of the amount required when an unaged solution is used.

REFERENCES:
patent: 3087890 (1963-04-01), Pye
patent: 3399133 (1968-08-01), Gerdes et al.
patent: 3523889 (1970-08-01), Eis
patent: 3605775 (1971-09-01), Zaander et al.
patent: 3817861 (1974-06-01), Slusarczuk
patent: 4201867 (1980-05-01), Gasper
patent: 4396513 (1983-08-01), Haldeman
patent: 4470907 (1984-09-01), Sencza
Polyelectrolytes for Water and Wastewater Treatment, Ed. W. L. K. Schwoyer, CRC Press, 1981, pp. 2, 3, 5, 7, 16-19 & 245.
Proceedings, AWWA Seminar on use of Organic Polyelectrolytes in Water Treatment, Las Vegas, Nevada, Jun. 5-9, 1983, pp. 249-264.
Proceedings AWWA Seminar on Polyelectrolyte Aides to Better Water Quality, Chicago, Ill., Jun. 4, 1972.

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