Formation and degradation of chlorinated aromatic compounds in an air pollution control device for MSW combustor

Abstract A municipal solid waste combustor (MWC) in Avesta Sweden, was equipped with an electrostatic precipitator (ESP), a dry scrubber (DS), a fabric filter (FF) and an additional add-on air pollution control system indcuding wet scrubber (WS) and a condensation device (CD). Higher levels of polychlorinated dioxins and dibenzofurans (PCDD/Fs) were found after the additional add-on air pollution control system than after the fabric filter. The results indicate a formation or a transformation of PCDD/Fs in the wet scrubber and in the condensation device.