Liquid purification or separation – Diverse distinct separators
Patent
1977-12-23
1979-09-18
Granger, Theodore A.
Liquid purification or separation
Diverse distinct separators
100118, 100121, 100152, 100154, 210386, 210400, B01D 3304
Patent
active
041682360
ABSTRACT:
Apparatus is provided for the continuous treatment of sludge, which is made possible through the advantageous combination of at least two independent dewatering steps at consecutively higher pressures and increased dwell time. In a preferred embodiment there is provided a three stage process where there is a first dewatering at the pressure provided by gravity action, the sludge being strained through continuous filter pockets; a second moderate pressure stage with a drum filter press; and a third higher pressure stage.
REFERENCES:
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patent: 1946663 (1934-02-01), Behnke
patent: 3273494 (1966-09-01), Cocchiarella
patent: 3531404 (1970-09-01), Goodman et al.
patent: 3605607 (1971-09-01), Guyer
patent: 3699881 (1972-10-01), Levin
patent: 3743100 (1973-07-01), Bahr
patent: 3800952 (1974-04-01), Bastgen
patent: 3896030 (1975-07-01), Bahr
patent: 3897341 (1975-07-01), Ozawa
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