Reduced Sulfur Compound and Methane Emissions from Kraft Pulp and Paper Mill Wastewater Treatment Plants

A spatial ambient air sampling technique was used to quantify the emissions of four reduced sulfur compounds (hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide) and methane from the various components of the wastewater treatment plants at six Kraft pulp and paper mills. The types of components tested included: primary clarifiers, primary settling ponds, spill ponds, aerated stabilization basins and post-aeration retention ponds. In addition to the ambient air sampling, liquid samples and process data were collected to facilitate the development of an understanding of the relationship between process operation and emissions.