title: A new sewage exfiltration model--parameters and calibration.
abstract: Exfiltration of waste water from sewer systems represents a potential danger for the soil and the aquifer. Common models, which are used to describe the exfiltration process, are based on the law of Darcy, extended by a more or less detailed consideration of the expansion of leaks, the characteristics of the soil and the colmation layer. But, due to the complexity of the exfiltration process, the calibration of these models includes a significant uncertainty. In this paper, a new exfiltration approach is introduced, which implements the dynamics of the clogging process and the structural conditions near sewer leaks. The calibration is realised according to experimental studies and analysis of groundwater infiltration to sewers. Furthermore, exfiltration rates and the sensitivity of the approach are estimated and evaluated, respectively, by Monte-Carlo simulations.
authors: Dresden University of Technology, Institute for Urban Water Management, 01062 Dresden, Germany. Christian.karpf@tu-dresden.de
authors: Christian
authors: C
authors: Karpf
authors: Peter
authors: P
authors: Krebs
mesh_terms: D008962:Models, Theoretical; D009010:Monte Carlo Method; D012722:Sewage; D014876:Water Pollution
chemical_list: D012722:Sewage