<abstract xmlns="http://www.w3.org/1999/xhtml">The purpose of the present article was to determine odour emission rate from primary settling tanks after hermetisation. The paper presents the results of the research on odour emission from four settling tanks, covered with self-supporting aluminium domes with a diameter of 52 meters, located on urban wastewater treatment plants, with the planned flow capacity equal to 200 000 m3/day. Altogether, the olfactometry analysis of 189 samples of polluted air pulled from the domes with the use of an air blower which has efficiency of 12 000 m3/h was conducted. The results of odour concentration measurements were in a range of approximately 10 800 to 763 600 ouE/m3. Average odour emission rate was equal to 102 ouE/(s · m2). The obtained value is much higher than the literature data, available for non-hermetised settlers only. This rate enables better estimation of the odour stream that has to be deodorised after sealing the settling tanks.</abstract>

The purpose of the present article was to determine odour emission rate from primary settling tanks after hermetisation. The paper presents the results of the research on odour emission from four settling tanks, covered with self-supporting aluminium domes with a diameter of 52 meters, located on urban wastewater treatment plants, with the planned flow capacity equal to 200 000 m3/day. Altogether, the olfactometry analysis of 189 samples of polluted air pulled from the domes with the use of an air blower which has efficiency of 12 000 m3/h was conducted. The results of odour concentration measurements were in a range of approximately 10 800 to 763 600 ouE/m3. Average odour emission rate was equal to 102 ouE/(s · m2). The obtained value is much higher than the literature data, available for non-hermetised settlers only. This rate enables better estimation of the odour stream that has to be deodorised after sealing the settling tanks.

Odour emission from primary settling tanks after air-tightening

West Pomeranian University of Technology Szczecin

Faculty of Chemical Technology and Engineering, Department of Chemical and Process Engineering

Faculty of Chemical Technology and Engineering

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Odour emission from primary settling tanks after air-tightening"}

The purpose of the present article was to determine odour emission rate from primary settling tanks after hermetisation. The paper presents the results of the...

Odour emission from primary settling tanks after air-tightening

Published Online: Nov 26, 2020

Page range: 22 - 27

DOI: https://doi.org/10.2478/pjct-2020-0034

Keywords
odour emission, odour emission rate, air tightening, primary settling tank, wastewater treatment plant

© 2020 Małgorzata Friedrich et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Odour emission from primary settling tanks after air-tightening

Published Online: Nov 26, 2020

Page range: 22 - 27

DOI: https://doi.org/10.2478/pjct-2020-0034

Keywordsodour emission, odour emission rate, air tightening, primary settling tank, wastewater treatment plant

© 2020 Małgorzata Friedrich et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
odour emission, odour emission rate, air tightening, primary settling tank, wastewater treatment plant