The Norwegian Association of Energy Users and Suppliers (Norsk Energi) have carried out incineration tests with addition of 10 % by weight CCA-treated wood waste to municipal solid waste in a MSWI plant. The objective with the test was to determine emissions and composition of bottom ash. The incineration test was done at the Klemetsrud plant in Oslo The main conclusions are: -No significant increase in emission of copper, chromium, arsenic and dioxin -Emission of total heavy metals (incl. copper, chromium and arsenic) is much lower than the limit value in the EU directive on waste incineration. -The dioxin concentration in the flue gas was ¼ of the limit value in the EU directive on waste incineration. -The concentration of heavy metals in bottom ash shows levels far below the threshold value stated in the Norwegian regulations for Hazardous waste. The results from the leaching tests suggest that the bottom ash from the incineration with 10 % CCA-treated wood meets the criteria for depositing on landfills for non-hazardous waste.

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