DuPont has set far-reaching environmental goals that must have been met before the year 2015. Also in the Netherlands, DuPont is continuously working on measures that benefit the environment. The emissions to water and air are measured and registered as agreed with the government. All environmental aspects are reported to the government by an annual report.
The emissions of volatile organic substances, greenhouse gasses and substances that affect the ozone layer have been strongly reduced by the aggressive environmental approach. At the end of the nineties for instance a thermal converter was installed at the Fluor products plant. In this downstream incinerator, fluorinated compounds are converted into marketable hydrofluoric acid that, among other things, is being used in the manufacturing of toothpaste.
Calculations under the terms of the Dutch Emission Guideline demonstrate that the emission concentrations are within the maximum allowable limit, the target value and the background value, or that the maximum allowable risk level contour does not go beyond the site boundaries of DuPont in Dordrecht.
Since the end of the 1950s – the time that DuPont started in Dordrecht – we have had (an)aerobic waste water treatment. Here the biodegradable compounds are purified by best practicable means. At this moment we are working on collaboration with the District Water Board Hollandse Delta to treat the majority of the waste water stream at the sewage treatment plant in Dordrecht.
The past years the amount of non-biodegradable compounds, such as salts (chlorides/fluorides), discharged into the river has been significantly reduced. In 2005 a new waste water treatment on the basis of vacuum filtration and carbon beds has been installed at the Fluor products plant. In the future more streams will be connected to these facilities. After this treatment the water is also treated biologically. The emissions to water and air are measured and recorded as agreed upon with the authorities.
By taking as much measures at the source as possible, we prevent that waste is created. The waste we have is collected separately and treated efficiently. First, the possibilities of recycling or useful application are considered. After that, incineration will be considered and landfill is the final option.
At all locations where soil threatening activities take place, soil protecting measures have been taken that meet the Dutch guideline on soil protection. The historic soil/groundwater pollution is treated by means of a groundwater management system. The purified water is being used as cooling water for one of the cooling towers at the Dordrecht site.
To generate energy we have two cogeneration plants that supply electricity as well as steam. Studies in 2000 and 2004 as part of the Benchmark Energy Covenant showed that DuPont is highly energy-efficient and that it surpasses the world top. Part of the electricity DuPont generates in Dordrecht is supplied to the national grid, so households and other companies benefit from DuPont’s energy generation as well.
Over the years the activities of DuPont in Dordrecht have significantly expanded. And yet the company is still able to adhere to the sound regulations as laid down in the permit. Structural noise or odour complaints of neighbours do not occur. The noise production of the equipment present is considered best practicable means. The various processes take place within closed systems. The existing emissions to the air do not cause odour nuisance to the surroundings.
DuPont Dordrecht is a ISO 14001 certified company. The certificate can be download by clicking the following link: ISO 14001 (pdf)