Evaluation of limit-state-functions by means of a diffusion model in the risk assessment of a biodegradable pollutant discharge in a river pathway [articol]

Abstract

When evaluate consequences of a wastewater treatment (WWT) system failure, by using a probabilistic analytical method of risk assessment, derivation of the so-called limit state functions (LSF) are necessary. For the case study of an accidental pollutant discharge from a municipal WWT-plant, the LSF have been accurately evaluated by simulating the contaminant fate and transport in a control section of the riverine pathway by using a diffusion model with accounting for pollutant biodegradation.