Method for treating water containing wastes

Details Method for treating water containing wastes Method for treating water containing wastes

1980-05-07

1981-10-20

Castel, Benoit

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210750, 210770, 71 11, C02F 1114

Patent

active

042959721

ABSTRACT:
A method for treating a water containing waste such as industrial sludges and animal excrements. The method comprises a first step of mixing the waste with an alkaline earth metal oxide such as calcium oxide to obtain a preliminarily dried mixture and a second step of further drying and granulation of the mixture. Fuel consumption is saved by utilization of the exothermic reaction of an alkaline earth metal oxide with water contained in the waste. The waste may be converted by the method to usable products such as fertilizers, cement materials or cement additives.

REFERENCES:
patent: 3342731 (1967-09-01), Baumann et al.
patent: 3345288 (1967-10-01), Sontheimer
patent: 3442498 (1969-05-01), Davis
patent: 3623975 (1971-11-01), Cardinal, Jr. et al.
patent: 3963471 (1976-06-01), Hampton
patent: 4125465 (1978-11-01), Turovsky et al.
patent: 4145278 (1979-03-01), Davy
patent: 4226712 (1980-10-01), Kamei

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