Process for the flocculation of suspended solids

Details Process for the flocculation of suspended solids Process for the flocculation of suspended solids

1983-03-16

1985-05-28

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210907, 210912, C02F 156

Patent

active

RE0319007

ABSTRACT:
Aqueous dispersions of solids are readily flocculated with polymeric anionic flocculants containing comonomers of 2-acrylamido-2-methylpropanesulfonic acid and acrylamide. The polymeric flocculant should contain from about 1.0 to about 35.0 mole percent of repeating units derived from 2-acrylamido-2-methylpropanesulfonic acid and should have a Brookfield viscosity of at least 2.0 centipoises. In addition to their flocculating ability, employment of these copolymers achieves a high degree of compaction in the flocculated solids.

REFERENCES:
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patent: 3617572 (1971-11-01), Monagle
patent: 3617573 (1971-11-01), Monagle
patent: 3680698 (1972-08-01), Liu
patent: 3692673 (1972-09-01), Hoke
patent: 3707523 (1972-11-01), Ledden et al.
patent: 3975496 (1976-08-01), Smalley et al.
patent: 4077930 (1978-03-01), Lim
patent: 4147681 (1979-04-01), Lim
Hoover et al., "Recent Advances in Ion-Containing Polymers", J. Poly Sci.: Symposium No. 45, 1-37 (1974).
Thorpe, "Polymeric Flocculants-Versatile Tools for Environmental", 39th Annual Meeting International Water Conference, (1978).

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