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Virus fate and transport during artificial recharge with recycled water

Chrysikopoulos Constantinos, Robert Anders

Πλήρης Εγγραφή

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Περίληψη

A field-scale experiment was conducted at a research site using bacterial viruses(bacteriophage) MS2 and PRD1 as surrogates for human viruses, bromide as aconservative tracer, and tertiary-treated municipal wastewater (recycled water) toinvestigate the fate and transport of viruses during artificial recharge. Observed virusconcentrations were fitted using a mathematical model that simulates virus transport inone-dimensional, homogeneous, water-saturated porous media accounting for virussorption (or filtration), virus inactivation, and time-dependent source concentration. Thefitted time-dependent clogging rate constants were used to estimate the collisionefficiencies for bacteriophage MS2 and PRD1 during vertical fully saturated flow.Furthermore, the corresponding time-dependent collision efficiencies for bothbacteriophage asymptotically reached similar values at the various sampling locations.These results can be used to develop an optimal management scenario to maximize theamount of recycled water that can be applied to the spreading grounds while stillmaintaining favorable attachment conditions for virus removal.

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