METHOD OF CLEANING OIL FIELD EFFLUENTS Russian patent published in 2012 - IPC C02F1/28 C02F1/40 B01D15/02 C02F101/32 B01D41/02 

FIELD: process engineering.

SUBSTANCE: invention may be used in oil production, particularly, in separation and collection assemblies. Filtration compartment 2 of tank 1 is filled with loose filtration material 3. Effluents are fed into tank 1. Portion of filtration material 3 is discharged from tank 1 into bottom bin 6 to feed mix of gas and heated water therein via pipeline 3. Mix of filtration material 3 ands sludge is forced upward via tube 9 into top bin 10 to feed cleaned granules of filtration material 3 there from by screw 14 into compartment 2. Sludge with water is drained via floor perforations in bin 10 into centrifuge 11. Cleaned water is fed from centrifuge 11 into cleaned water tank 12 while sludge is fed into concentrated sludge container 13.

EFFECT: higher efficiency of cleaning.

3 cl, 2 dwg, 1 ex