The macro-porous polymer extraction (MPPE) technology developed in the early 1990s by Akzo Nobel removes dissolved and dispersed hydrocarbons. MPPE is basically a liquidliquid extraction process where the extraction liquid is immobilised in a macroporous polymer particle. This technology can remove compounds with a lower polarity than water to any level required (e.g. 99.9999% removal). The MPPE technology is applied in process water, offshore produced water, wastewater and ground water in a wide variety of markets since 1994. The first application was at Total in Harlingen (NL) where offshore-produced water and process water from the monoethylene glycol (MEG) and triethylene glycol (TEG) regeneration is treated by MPPE onshore.
Within the Oslo Paris Convention (OSPAR) for the protection of the marine environment of the North East Atlantic, European governments and industries are setting offshore emission standards for the future. This has led to testing and evaluating the MPPE technology heavily for offshore-produced water. ERT/Orkney water technology center, TOTAL, the Netherlands Oil and Gas Exploration and Produced Association (NOGEPA), NAM (Shell/Exxon,) and Statoil.
The MPPE technology has been, for offshore gas/condensate, proven and commercially operational since the beginning of 2002 (Total F15A).6 Two other units have started up since then: NAM K15A, and NAM K15B. In 2003, successful fieldtests on produced water form oil production took place on
request of the OSPAR.
Macro-porous Polymer Extraction for Offshore Produced Water Removes Dissolved and Dispersed Hydrocarbons