Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-07-07
1976-09-14
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
61 35, C02C 502
Patent
active
039805581
ABSTRACT:
A novel method for permanently disposing of liquid or semi-liquid wastes containing soluble toxic materials to prevent the toxic materials from being leached into the surrounding environment is disclosed. The process comprises admixing the liquid or semi-liquid waste, such as aqueous sludge from the manufacture of phosphoric acid containing soluble and insoluble arsenic, sulfur and like toxic compounds, with a solidifying agent consisting essentially of a hydraulic cement in amounts sufficient to provide a fluid mass that will set to a contiguous rock-like solid upon standing, and then allowing the admixture to set to a contiguous rock-like solid mass which is insoluble in water. By the inventive process, the soluble and insoluble toxic materials of the waste are wholly entrapped in the contiguous rock-like solid mass which thereby prevents them from being leached into the surrounding environment when exposed to ambient moisture.
REFERENCES:
patent: 3586624 (1971-06-01), Larson
patent: 3707523 (1972-12-01), Ledden et al.
patent: 3841102 (1974-10-01), Cinner et al.
Browning-Ferris Industries Inc.
Wyse Thomas G.
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