Mathematical modeling and simulation of toxic substance spillages into watercourses

EVANGELINA DELFRATTE; NICOLÁS J. SCENNA; ALEJANDRO S.M. SANTA CRUZ

Sao Pablo

Congreso; Congresso Brasileiro de Engenharia Química ? COBEQ XX; 2014

Blucher

Due to the importance of the natural watercourses preservation, a mathematical model of heat and mass transfer dynamics of a fixed-geometry watercourse is fully developed. The mathematical model is derived from first principles and consists of both partial differential and algebraic equations. Semi empirical equations are applied to calculate the physicochemical properties, heat loads and mass transfer coefficients. The model is implemented and solved using gPROMS (General Process Modeling System).In this context, the proposed dynamic mathematical model predicts the temperature profile of the watercourse under study, as well as the waterbed one, while considering every major heat flux which impacts on the system (including radiation and non-radiation terms). The obtained results are compared against a well-known river and stream water quality modeling implementation, which allows concluding that a good calibration of the watercourse dynamics mathematical model is here achieved.