ESTUDIOS DE DISPERSION DE CONTAMINANTES Y DECLINACION BACTERIANA EN EL MAR DE CHIMBOTE – PERU

Abstract

Dispersion studies and preliminary determinations of bacterial declining (T–90) were
performed at the bay of Chimbote-Peru. As for the dispersion studies, a fundamental
partial differential equation and its solution for the three-dimensional case are
applied. The shape and characteristics of the tracer plume is determined as well as
the rate of diminution of peak concentrations. The method considers a point injection
with Rhodamine B and Iodine 131 as tracers, for determining the longitudinal, lateral
and vertical dispersion coefficients that govern the dispersion rates of industrial and
wastewaters to discharge through a submarine outfall installed at the sea of Chimbote.

The method presented herein allows calculations of dispersion coefficients and
predict the influence of the future diffuser as well, regardless of the nature of the
body of water in which the tests were conducted.
In regards to T-90 determinations, they were performed by the use of a combined
tracer technique, using I-131 for dilution measurement and Rhodamine B as a visual
aid. Dilution and decrease in bacterial concentrations were taken into consideration
as well as continuous radiotracer injection.