Water purification process

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210 54, C02B 120

Patent

active

039473538

ABSTRACT:
Waste waters containing water glass, for example resulting from the dyeing of fabrics are purified by adding small amounts of basic nitrogen compounds, e.g. amines to the waste water and then carrying out the known flocculation process.

REFERENCES:
patent: 2234285 (1941-03-01), Schworm et al.
patent: 2264103 (1941-11-01), Tucker
patent: 2315734 (1943-04-01), Ralston et al.
patent: 2862880 (1958-12-01), Clemens
patent: 3487928 (1970-01-01), Canevari
patent: 3728419 (1973-04-01), Stanford et al.

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