Design,construction and commissioning of a flue gas washing wastewater plant
The construction of a flue-gas desulfurization (FGD) wastewater treatment plant became necessary, because a new coal power plant was built in Maasvlakte. Maasvlakte itself is a huge industrial area and part of the Rotterdam port. The new coal power plant is known as Maasvlakte Power Plant 3 (MPP3). The MPP3 is one of the largest and most modern coal-fired power plants in the world.
With an electrical output of around 1,100 MW, it covers approx. 7 % of the Dutch electricity demand and generates district heating for neighboring municipalities and ports. E.ON Benelux N.V., Rotterdam, the Netherlands (now Uniper Benelux) awarded PWT with the approx. EUR 4 million contract to design, build and commission the FGD wastewater treatment plant to treat the highly contaminated wastewater resulting from wet desulphurisation.
In addition to considerable quantities of suspended substances (FGD gypsum), this wastewater contains heavy metals washed out of the flue gas such as mercury, lead, cadmium, nickel, and others. These must be removed before the wastewater is discharged.
Furthermore, for the safe removal of unwanted substances, the operator attaches great importance to low energy consumption and low disposal costs for the residual substances produced, Also, robust and redundant plant technology for many years of use of the water treatment plant with very high availability.
Treatment is realised by a three-stage chemical and physical plant with selective heavy metal removal. Design included the process design, 3D plant layout and pipe engineering as well as instrumentation and functional design for automation. In addition, the Power Plant specific requirements for high quality and documentation were to be fulfiled.
Design startet at the beginning of 2010 and the erection ot the plant in September 2010. The plant has been ready for operation since the first half of the year 2012.