AkzoNobel MPP Systems has developed a one-step process to remove both dissolved and dispersed hydrocarbons from water. Known as Macro Porous Polymer Extraction (MPPE), this can reduce organic concentrations in contaminated water from thousands of parts per million to low parts-per-billion levels.
Using this method, process water, waste water, and groundwater can all be purified until they comply with discharge standards. At its heart is a column filled with MPPE grains, through which the polluted water is passed. The grains bind with the polluting hydrocarbons and so extract them from the water, which is thus pure enough for reuse or discharge by the time it leaves the column. The grains themselves are regularly regenerated using low-pressure steam.
In an impressive project recently set up in northern Norway, the Ormen Lange Oil Extraction Unit, AkzoNobel is using the MPPE method to purify the process water from an entire refinery complex.
Mechanical design innovative water purification
On behalf of Norwegian clients Norsk Hydro and the Aker Kvaerner engineering bureau, VIRO produced the technical drawings and related calculations for the mechanical design of the unit’s steel structures, storage tanks and pipeline system. To achieve this, we used an innovative link, created by VIRO itself, between the technical drawing package Advance Steel and the pipeline modelling program PDMS.
The additional capabilities created by this initiative, and the time savings it made possible, proved decisive factors in the success of a remarkable project to create an environmentally-friendly solution for an industrial complex in a fragile natural setting.