ABSTRACT
Water quality is fundamental to the health, efficiency and well being of
individuals and societies in all countries of the world. It is threatened
by almost all modern interactions of man with nature .Surface water and ground
water is related in the hydrologic cycle. The sediments of the rivers
are the repositories of toxic wastes, which result in long term effect
through mobilization of pollutant and release of nutrients from bottom
mud. Urbanization in watershed in turn reduces water that sustains the g/w
system -“recharge”. Water supplies from groundwater sources are becoming increasingly
important, but they are threatened by unplanned exploitation and by
contamination from many sources. The best way to minimize g/w
contamination is to prevent it. The regulation of waste disposal to protect
groundwater is especially important. Understanding the behavior of contaminants
in the subsurface is essential - for effective regulation of potential sources of
contamination and for predicting the environmental impact.
Methodology
Adopted
Field investigation on Bangalore Madiwala lake water
and surrounding groundwater quality was conducted.
The major ion chemistry of groundwater of Madiwala lake
premises has been discussed.
The chemical parameters obtained were used for regression
analysis for upstream and downstream.
Water quality indices were calculated for the upstream
and downstream points.
To study the transport of contaminants in the subsurface an
experimental unit was designed with Nitrate and Chloride as tracers.
The mechanics of flow of the influents in soil columns
were studied to determine the effective diffusion coefficients.
Visual Solute Transport (VST) software was used for the
prediction of solute concentrations over time or distance.
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