Method for treating muddy water

Details Method for treating muddy water Method for treating muddy water

1990-03-16

1991-07-23

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210727, 210730, 210732, 210733, 210734, C02F 156

Patent

active

050341375

ABSTRACT:
A method for treating muddy water which comprises adding a first chemical containing an alkali metal or alkaline earth metal oxide or hydroxide to muddy water to be treated, thereby rendering muddy water alkaline, adding a second chemical containing an anionic polymer coagulant to muddy water simultaneously with or after the addition of the chemical, further adding a third chemical containing a sulfate thereby rendering the muddy water weakly alkaline, and then adding a fourth chemical containing an anionic polymer coagulant to muddy water. As a result, large-sized and hard flocs are produced.

REFERENCES:
patent: 3418237 (1968-12-01), Booth et al.
patent: 3493499 (1970-02-01), Zeitoun et al.
patent: 3578586 (1971-05-01), Gal et al.
patent: 3637491 (1972-01-01), Hedrick et al.
patent: 4173532 (1979-11-01), Keoteklian

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