Method of treating a waste liquid containing polluting compounds

Details Method of treating a waste liquid containing polluting compounds Method of treating a waste liquid containing polluting compounds

1977-04-21

1978-08-29

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

C02B 120, C02C 502

Patent

active

041102126

ABSTRACT:
Waste liquid containing polluting compounds with an acidic ferrous salt solution to adjust the pH of the liquid to a value within the range of from about 2 to about 5 and to reduce polluting compounds in the waste liquid to a form capable of reacting with an alkali to produce a precipitate. The adjusted waste liquid is then reacted with an alkali to raise the pH of the liquid to a value within the range of from about 9 to about 12.5 and to produce said precipitate. The alkaline waste liquid is then reacted with a silicic compound to form large complex silicate molecules with the precipitate and consequent solidification of the waste liquid into a stable, non-polluting solid.

REFERENCES:
patent: 3183186 (1965-05-01), Oster
patent: 3342731 (1967-09-01), Baumann
patent: 3404088 (1968-10-01), Dujardin
patent: 3763038 (1973-10-01), Misaka
patent: 3928195 (1975-12-01), Hoeltgen et al.
patent: 4025430 (1977-05-01), Pagel

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