Treatment of waste water in non-evaporating dehydration of low g

Details Treatment of waste water in non-evaporating dehydration of low g Treatment of waste water in non-evaporating dehydration of low g

1982-03-29

1983-07-26

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210663, 210694, 210806, 210180, 210251, 210295, 34 9, 34 12, 34 37, 44 1G, 44 2, B01D 1500, F26B 700

Patent

active

043953344

ABSTRACT:
In a non-evaporating dehydration of brown coal, the coal is crushed and classified into lumps and fine particles. The lumps of coal are subjected to a non-evaporating dehydration in which waste water is produced. The waste water is contacted with the fine particles of coal so that components which affect the COD value of the water are absorbed by the coal particles. The coal particles are then burnt to produce saturated steam which is used in the non-evaporating dehydration.

REFERENCES:
patent: 3300403 (1967-01-01), Kehoe
patent: 3424676 (1969-01-01), Johnson et al.
patent: 3892661 (1975-07-01), Siviour et al.
patent: 4185395 (1980-01-01), Nakako et al.
patent: 4254560 (1981-03-01), Tanaka et al.
patent: 4294584 (1981-10-01), Verschuur
patent: 4324051 (1982-04-01), Sasaki et al.

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