Method and apparatus for treatment of oily waste

Details Method and apparatus for treatment of oily waste Method and apparatus for treatment of oily waste

1984-01-03

1985-02-26

Fisher, Richard V.

Liquid purification or separation

Processes

Separating

210787, 210804, 2103601, 2105321, B01D 3302

Patent

active

045016712

ABSTRACT:
Oily waste is separated by gravity settling into a light oil phase forming an upper layer and a heavy phase forming a lower layer. An overflow stream of oil passes from the upper layer to a raw fuel storage tank while an underflow from the lower layer, after addition of diesel oil, is centrifugally separated into a light component of oil with some water which is returned to the gravity settling, an intermediate component of clarified water which is discharged to a sewer, and a heavy sludge component which is fed to a second centrifuge for separation into substantially dry solids and a mixture of water and residual oil which is returned to the gravity settling.

REFERENCES:
patent: 2405158 (1946-08-01), Mensing
patent: 3764008 (1973-10-01), Darley et al.
patent: 3781201 (1973-12-01), Carmicheal et al.
patent: 3799343 (1974-03-01), Lang
patent: 4175040 (1979-11-01), Sammons et al.
patent: 4196077 (1980-04-01), Berkowitz et al.
patent: 4361490 (1982-11-01), Saget

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