28.  Evaluation of Limit-State-Functions by means of a Diffusion Model in the Risk Assessment of a Biodegradable Pollutant Discharge in a River Pathway

Authors: G. Maria and C. Maria


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.


Keywords: risk assessment, pollutant riverine dispersion

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