Deoiling Drain Water

Where crude oil is pumped or where drilling for crude oil goes on, so-called “drain water” accumulates. This water is polluted to a greater or lesser extent with oil and may not be discharged into the sea until it has undergone the appropriate deoiling process. The specifications of the IMO (International Maritime Organization) set the limit values at 15 ppm, in some sensitive regions of the sea even at 5 ppm.

 

With Westfalia Separator^® seaprotectsolutions, drain water is deoiled to the statutorily specified extent to guarantee that the marine ecosystem is protected. The central role in this process is performed by the BilgeMaster system from GEA Westfalia Separator. As with the deoiling of bilgewater, drain water can also be reliably deoiled using this innovative system.

 

Westfalia Separator^® seaprotectsolutions are versatile whether used on production platforms and drilling platforms, on FSOs or FPSOs.

 

The accumulated drain water is fed to the treatment unit with a self-cleaning separator at its heart. Once the oil-containing water has been heated and the appropriate additives have been put in, the separator separates it into solids (sludge with a high proportion of dry substance), an oil phase and purified water. The water phase is monitored by a special oil monitor. If the oil content exceeds 15 ppm, the water is automatically fed back into the system. If the oil content meets the statutory specifications, the water is discharged into the sea. Add-on units allow the oil content to be reduced to below 5 ppm so that practically pure water can be discharged into the sea.