Flocculant for water treatment

Details Flocculant for water treatment Flocculant for water treatment

1993-04-23

1995-05-16

Kalafut, Stephen

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252180, 2523132, 210724, 210716, C02F 510

Patent

active

054158087

ABSTRACT:
A flocculant for water treatment containing a highly polymerized silicic acid solution having a high concentration of SiO.sub.2 and an extremely low concentration of alkali metal substance, and a method for producing such flocculant. The silicic acid solution is prepared by treating an aqueous solution of an alkali metal silicate such as water glass to remove alkali metal and allowing the solution to liquefy after once gelling. The flocculant may further contain a water soluble metal salt such as ferric chloride or ferric nitrate.

REFERENCES:
patent: 2217466 (1940-10-01), Baylis
patent: 3630954 (1971-12-01), Yates
patent: 3867304 (1975-02-01), Mindick et al.
patent: 3947376 (1976-03-01), Albrecht
patent: 4110212 (1978-08-01), Krofchak
patent: 4332693 (1982-06-01), Piepho
patent: 4404105 (1982-09-01), Lockerente et al.
patent: 4539230 (1985-11-01), Shimizu et al.
patent: 4915467 (1983-11-01), Piepho
patent: 4923629 (1990-05-01), Hasegawa et al.
Chemical Abstract 79(18):107904f; Barni, A.

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