Assessments Of Infiltration Rate And Effects On
Water Quality Of Selected Infiltration Media For
Use In Storm Water Run Off In Karachi, Pakistan
Author(s)
A. Zubair & M. A. Farooq
Abstract
Infiltration experiments were undertaken to establish the suitability of soil type
in terms of infiltration rates among the various soil, and to investigate the
potential effects of the infiltration media on the water quality by the stormwater
runoff. In all from thirty three sampling points, five different types of soil have
been classified on the basis of composition of sand, silt and gravel and tested on
small scale to get a preliminary estimate regarding their suitability as infiltration
media. Water quality tests are conducted on stormwater to assess the effects of
the medium. Soil samples from various soil types were taken prior to and after
infiltration of storm water runoff. The samples were tested for trace metals (Pb,
Cu, Cd, and Zn) and for major ions (Ca, Mg, Na and K). The result shows that
there is a decline in the concentration of all the metals studied during and after
infiltration of stormwater runoff. It suggest that presence of sand, silt and gravel
and the absence of clay particles in the effluent is responsible for declining effect
of cations as the leaching of soil has not occurred. Therefore the declining effects
of cations are significant in all the soil types.
Keywords: assessment, infiltration rate, infiltration media, soil types, soil
characteristics, storm water, run off, trace metals, major cations, water quality.
1 Introduction
With the rapid development in the effective control of point source pollutants,
the proportion of pollutant from run off into receiving waters is raising in recent
Keywords
assessment, infiltration rate, infiltration media, soil types, soil
characteristics, storm water, run off, trace metals, major cations, water quality.
Related Book
Other papers in this volume
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