Problems of environmental safety of water disposal as a factor of sustainable urban development

• Published in: IOP conference series. Materials Science and Engineering Vol. 907; no. 1; pp. 12078 - 12084
• Main Authors: Iurchenko, V.O., Lebedeva, E.S., Levashova, Yu.S., Kovalenko, A. V.
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.08.2020
• Subjects: Formaldehyde; Hazardous materials; Life support systems; Mathematical analysis; Polymer coatings; Safety; Sewer systems; Sustainable development; Urban development
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/907/1/012078

This paper examines the environmental safety of water disposal systems - one of the life support systems for a population - as a condition for sustainable urban development. Gaseous emissions from such systems contain a number of highly hazardous substances. The concentration of formaldehyde - a hazard category 2 substance - in sewer network emissions (using direct measurement) and in the underroof space of sewer collectors (by a calculation) was experimentally investigated. The calculations were carried out based on the measurements of the concentration of formaldehyde in the emissions and the data collected during special laboratory experiments with polymer coatings, which accumulated organic gaseous compounds from being in the sewers. It has been proved that the concentration of formaldehyde in the underroof space and in sewer network emissions significantly exceeds the corresponding maximum permissible concentration. Cooling and installation of degassers in shafts were suggested as reasonable methods for protecting the city's atmospheric air against the emissions from sewer systems.