BlazeTech has recently developed a software called H2OFate to predict the fate and transport of chemical
and biological contaminants in water distribution systems. This software includes models for the
reactions of these contaminants with residual disinfectant in bulk water and at the pipe wall, and their
adhesion/reactions with the pipe walls. This software can be interfaced with sensors through SCADA
systems to monitor water distribution networks for contamination events and activate countermeasures, as
needed. This paper presents results from parametric calculations carried out using H2OFate for a
simulated contaminant release into a sample water distribution network.
We have recently developed an elliptically polarized light scattering (EPLS) technique to characterize the
morphology of fine particles suspended in an optically non-absorbing medium such as water. This
technique provides the size distribution, shape and agglomeration characteristics of suspended particles.
This technique can be used to detect various types of biological pathogens such as bacteria, protozoa and
viruses in potable water systems. Here we report results obtained from EPLS measurements on two
strains of Bacillus spores suspended in water along with comparison with electron microscopy.
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