GN Oil Sludge Treatment System is to use chemical to wash the oil sludge with heat to temperature of 60-70 C degree. After washing, the waste oil slurry is pumped to GN separation equipment to separate into oil, water and solids. The recycled water can be reused in the washing process, and the oil is clean enough to sell to the refinery company, the solids contain less than 2% oil which can be sent to biodegradation or thermal unit for final disposal if needed.
Below are some important points operators need to pay attention to while using GN oil sludge treatment system.
1. During shale shaker separation, clients should choose fine screens to remove particles up to 500 microns. It means all particles above 500 microns must be removed. It is to protection the centrifuges after shale shaker separation.
2. As disc centrifuge is easy to be blocked, the waste slurry enter into disc centrifuge must with solids less than 200 microns, and with less solids content. In this reason, 2-phase decanter centrifuge is used before disc centrifuge to further remove solids and reduce the solids content.
Why disc entrifuge is easy to be blocked, but clients still prefer to use it for water treatment and oil sludge treatment?
The reason is that, the clearance between the discs of the disc centrifuge is very small, which ensures that the separation is fine, and the solid particles can also be separated, so as to obtain a clearer liquid phase, which is the advantage of the disc centrifuge compared with other types of centrifuges, like decanter centrifuge.
However, the small disc gap requires more frequent manual cleaning and slag removal. If the manual cleaning and flushing of the flushing pump are not timely, the disc centrifuge is easy to be blocked during operation. This is the major disadvantages of the disc player. Operators can compare the advantages and disadvantages and make their decision to suit their job site situation.
3. The oil content in the solids which is discharged from decanter centrifuge is 1 ~ 3%.
4.15m3/h oil sludge treatment system adapts double deck shale shaker. The upper deck use steel frame screens with bigger opens. The bottom deck use fine API screen, API 40 is recommended for the bottom deck.
5. The oil content in the recovered water which is discharged from disc centrifuge is 1000 – 3000ppm. If clients want more clean water with less oil and soil, clients can add a water treatment unit after GN oil sludge separation system.
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