Mathematical description of the phenomenon of exfiltration of sewage from leaking sewage pipes into the ground
author:
BARTOSZ SZELĄG, JUSTYNA LISOWSKA
ORCID ID:
0000-0002-0559-5475, 0000-0002-1777-100X
No:
12/2022 Instal p. 59-61
DOI:
DOI 10.36119/15.2022.12.10
Exfiltration is an unfavorable phenomenon and can cause discharges of pathogens into residential areas (urbanized
areas), cause water quality standards to be exceeded and/or pose health risks to people living in the vicinity of
sewage-polluted lakes and rivers. Exfiltration wastewater contains large amounts of suspended solids, pathogenic
microorganisms, toxic pollutants, organic compounds, oils and fats. It is suspected that on a national scale there is
significant exfiltration of wastewater from sewage systems into the ground and groundwater but there is little
published evidence of this problem.
This paper attempts to develop a mathematical model of the phenomenon of wastewater exfiltration. The
engineering tool presented by the authors for the mathematical description of the flux of exfiltrating wastewater from
the void formed in cohesive soil into the ground and groundwater allows estimating the volume of the flux of
exfiltrating wastewater.
Further work envisages verification of the obtained relationship using numerical simulators (HYDRUS, FEFLOW) and potential modification of the method given in this paper
Keywords:
About Authors:
dr hab. inż. Bartosz Szeląg; prof. PŚk. https://orcid.org/0000-0002-0559-5475 – Politechnika Świętokrzyska w Kielcach, Wydział Inżynierii Środowiska Geomatyki i Energetyki, Katedra Geotechniki, Geomatyki i Gospodarki Odpadami; bszelag@tu.kielce.pl; dr inż. Justyna Lisowska https://orcid.org/0000-0002-1777-100X – Politechnika Świętokrzyska w Kielcach, Wydział Inżynierii Środowiska Geomatyki i Energetyki, Katedra Sieci i Instalacji Sanitarnych; e-mail: justyna@tu.kielce.p