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

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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) 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 postaeration 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. The results of the study indicated that preaeration basins, if present, were generally the wastewater treatment plant components with the highest hydrogen sulfide emissions. Hydrogen sulfide emissions from aerated basins were relatively small due to in-basin sulfide oxidation. Primary clarifiers and postaeration retention basins were relatively minor sources of reduced sulfur compound emissions.

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Keywords: AMBIENT AIR; DIMETHYL DISULFIDE; DIMETHYL SULFIDE; EMISSIONS; HYDROGEN SULFIDE; KRAFT PULP MILL; METHYL MERCAPTAN; REDUCED SULFUR COMPOUNDS; WASTEWATER TREATMENT PLANT

Document Type: Research Article

Publication date: 2009-10-01

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