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Wet Weather Impact On Trihalomethane Formation Potential In Tributaries To Drinking Water Reservoirs, Eid A. Alkhatib, R. Peters
Wet Weather Impact On Trihalomethane Formation Potential In Tributaries To Drinking Water Reservoirs, Eid A. Alkhatib, R. Peters
Chemistry & Physics Faculty Publications
During rain storm events, land surface runoff and resuspension of bottom sediments cause an increase in Trihalomethane (THM) precursors in rivers. These precursors, when chlorinated at water treatment facilities will lead to the formation of THMs and hence impact drinking water resources. In order to evaluate the wet weather impact on the potential formation of THMs, river samples were collected before, during and after three rain storms ranging from 15.2 to 24.9 mm precipitation. The samples were tested for THM formation potential and other indicators including UV254 absorbance, turbidity and volatile suspended solid (VSS). Average levels of THMs increased from …
Simulation Of Arsenic Partitioning In Tributaries To Drinking Water Reservoirs, Eid A. Alkhatib
Simulation Of Arsenic Partitioning In Tributaries To Drinking Water Reservoirs, Eid A. Alkhatib
Chemistry & Physics Faculty Publications
Arsenic released by bottom sediments was determined by experiments in which the sediments were artificially re-suspended using a particle entrapment simulator (PES) to simulate river conditions. Sediment cores were collected from various tributaries to drinking water reservoirs in Connecticut spiked with arsenic, and run in the PES at simulated bed-flow shear stresses from 0.0 to 0.6 N/m2. Under equilibrium conditions, the dissolved fraction of arsenic was found to range from 8.3 to 22.1 ug/1, which in most cases exceeded EPA Maximum Contaminant Level (MCL) of 10 ug/1. Experimental results from these simulations have shown that bed-flow shear stress causes an …