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Investigation Of Disinfection Byproduct Precursors In The Wachusett Reservoir Watershed, Darleen P. Bryan
Investigation Of Disinfection Byproduct Precursors In The Wachusett Reservoir Watershed, Darleen P. Bryan
Environmental & Water Resources Engineering Masters Projects
The disinfection of drinking water with chlorine was implemented as early as 1908 in an effort to inactivate water borne pathogens. However, chlorine reacts with naturally occurring organic' matter in water to form a host of chlorination byproducts. The possible detrimental health effects from exposure to these byproducts lead to the development offederal regulations for disinfection byproducts (DBPs) in drinking water. Most recently, standards were reduced to 80 ug/L for trihalomethanes, and 60 ug/L for haloacetic acids. The drinking water supplied by the Massachusetts Water Resources Authority (MWRA) has approached and sometimes exceeded the concern level at a few locations …
An Overview Of Microbial Source Tracking, Kyung Han
An Overview Of Microbial Source Tracking, Kyung Han
Environmental & Water Resources Engineering Masters Projects
Maintaining and improving water quality for drinking, human recreation, and agriculture are imperative to protect public health. Watershed-based approaches for protecting source water have become an important tool in the management of water resources in the United States. Microbial source tracking (MST) methods that identifY the source of pollution have been suggested as one of the tools for source water protection and watershed management. MST methods are mainly categorized by scientific approach and include host-specific indicator methods, phenotypic methods, molecular-based methods, and chemical indicator methods. The objective of this research was to evaluate the state of MST tool development and …
Assessment Of Water Age And Quality In The Stamford, Connecticut Water Distribution System, George Kansas
Assessment Of Water Age And Quality In The Stamford, Connecticut Water Distribution System, George Kansas
Environmental & Water Resources Engineering Masters Projects
Disinfection by-product (DBP) concentrations in drinking water distribution systems are of concern due to potential health effects. Due to the US EPA Stage 2 DisinfectantlDisinfection By-Product (DIDBP) Rule, proposed in 2003, water utilities are investigating the effects of distribution systems on water quality. Under the Stage 2 DIDBP Rule, there will be a change from use of a system-wide running annual average (RAA) to the use of locational running annual averages (LRAA) for compliance with DBP maximum contaminant levels (MCLs). The Aquarion Water Company of Connecticut (A WC) funded research into improved understanding of water quality. In the Stamford, CT …
Bench-Scale Evaluations Of Nanofiltration And Gac For Natural Organic Matter Removal, Amy B. Lane
Bench-Scale Evaluations Of Nanofiltration And Gac For Natural Organic Matter Removal, Amy B. Lane
Environmental & Water Resources Engineering Masters Projects
The Trap Falls Water Treatment Plant (TFWTP) is a 25 million gallons per day (MGD) conventional drinking water treatment facility in Shelton, CT. Bench-scale experiments were performed to evaluate a potential advanced treatment upgrade of post-filtration water at the TFWTP, prior to chlorination and distribution. Two advanced treatment options were evaluated, granular activated carbon (GAC) and membrane filtration. The goal of advanced treatment was to remove natural organic matter (NOM), which would lead to a decrease in disinfection by-product (DBP) formation. DBPs are formed when NOM is oxidized by chlorine, which is used by TFWTP for primary disinfection and to …