First retrofit plant for the treatment of drain water
Decanter Centrifuge in Container for Drain Water Treatment
GEA has successfully supplied first container skids
Platform in the waters of Alaska retrofitted with drain water system
With two centrifuge skids for the treatment of drain water, GEA has delivered the first retrofit plant to the oil & gas industry. Whilst drilling for oil, drain water collects on platforms in large volumes, which is passed into large tanks together with other waste water occurring. In conformity with the IMO Regulations MEPC.107(49) this contaminated water must not be drained into the ocean before corresponding treatment and de-oiling.
Centrifuge skids save time and money
The disposal of drain water on land is associated with high costs and expenditure of time so that a corresponding treatment is necessary by separation already on the drilling platform. For this reason, the use of drilling platforms in the waters of Alaska required a retrofit of the drain water treatment plant, which ensures a residual oil content in the drain water of less than 5 ppm. For this purpose, GEA has designed a plant with a high performance decanter for solids extraction as well as a separator for residual oil removal. The special feature here is the retrofit concept: Both centrifuges including peripheral equipment were delivered in one container each ready for operation. The required connecting piping between the containers was part of the scope of delivery as well. After the customer has fitted the supply line, the skids can be put into operation directly on deck, by “plug&play” so to speak. This possibility of retrofitting convinced the customer not only by its uncomplicated handling, but also by its enormous cost and time benefit.
In addition, the guarantee of lower residual oil content improved the charter rate of the drilling vessel - for this reason, the retrofit plant will pay off in next to no time.
For drain water GEA recommends the combination of decanters and disk stack centrifuges
