GN Oil Sludge System Working Process
Oil sludge in the V-Tank is separated by gravity into different layers after mixed by the bottom screw conveyor, the top floating oil (large portion) is transferred by a diaphragm pump into #2 oil surge tank, and the left small portion oil is feed into afterwards shaker shaker by centrifugal pump to finish the first phase separating.
GN Shale shaker can separate out most of those large solids, liquid is feed into #1 GN Decanter Centrifuge by screw pump where the second phase separating is achieved.

Solids treated by GN Centrifuge fall into the bottom tank of #1 centrifuge and diluted a second time. And liquid goes to #4 Centrifuge and Disc-Centrifuge Treating Unit’s Tank. Slurry in #1 centrifuge tank is transferred by #2 screw pump and feed into #2 Centrifuge to further separate: solids are collected by a GN cuttings box; liquid is fall into #2 Centrifuge tank, a inline pump is used to feed it into #1 Disc-Centrifuge where solids, oil and water is treated at the first time: oil goes to #5 unit’s #1 oil surge tank; water goes to #5 unit’s #1 water surge tank; solids discharge to the outside.
Slurry in #2 oil surge tank of #5 unit is feed into #2 Disc-Centrifuge by inline pump: oil goes to 1#oil surge tank; water goes to 1#water surge tank; solids discharge to the outside.
Slurry in 1#water surge tank of #2 unit is feed into #6 GN gravity oil/water separator by inline pump: oil goes to #6 unit’s #3 oil surge tank, water goes to 6# unit’s #2 water surge tank and then feed by another inline pump to #7 micro bubble treating unit: clean water goes to #7 unit’s water tank, provide recycled clean water for this whole system; oil goes to 3#oil surge tank of #6 unit. A oil pump is fixed on #3 oil surge tank, in case the oil is not clean enough, oil pump can transfer back to #2 oil surge tank, and then treated in 2#GN disc-centrifuge again until reach the final treating demands.