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Engineering Commons

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Environmental Engineering

2006

University of Massachusetts Amherst

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Full-Text Articles in Engineering

Characterization Of Manganese Oxide Coated Filter Media, Joseph Goodwill Sep 2006

Characterization Of Manganese Oxide Coated Filter Media, Joseph Goodwill

Environmental & Water Resources Engineering Masters Projects

Abstract Several methods for removal of soluble maugauese from drinking water exist. One of these options involves adsorption of the maugauese onto Mn oxide coated filter media. Dissolved maugauese (Mn(H)) is adsorbed to sites on the Mn oxide coating aud then oxidized by free chlorine, thus regenerating the media sites for further Mn adsorption. This method has been successfully used by numerous water treatment plauts, decreasing Mn levels to below treatment goals. A disadvautage to this method is the use of chlorine prior to filtration, which cau lead to increased levels of disinfection by-products as compared to post-filter chlorination. Nine …


Application Of Microbial Source Tracking To Separate Microbial Sources To A Tributary Of The Wachusett Reservoir, Michael N. Tache Sep 2006

Application Of Microbial Source Tracking To Separate Microbial Sources To A Tributary Of The Wachusett Reservoir, Michael N. Tache

Environmental & Water Resources Engineering Masters Projects

Surface waters used as sources of drinking water can be at risk for pathogen contamination from non-point source pollution. Non-point source pollution is a problem because it can be difficult to detect and quantify. Source water protection is a tool to protect public health by maintaining and improving source water quality. The Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR), which aims to improve the control of Cryptosporidium, recognizes watershed protection programs as part of both Cryptosporidium and virus removal requirements. Microbial source tracking (MST) is a tool that is currently being developed to aid in source water protection. …


The Suitability Of Coliphage As An Indicator Of Potential Fecal Contamination In Groundwater Systems, Keith G. Dewar Jul 2006

The Suitability Of Coliphage As An Indicator Of Potential Fecal Contamination In Groundwater Systems, Keith G. Dewar

Environmental & Water Resources Engineering Masters Projects

Over the years aquifers have been considered a clean source of drinking water as the soil acts as a natural filter. It.has been realized that groundwater used as a source of drinking water can be subject to fecal contamination through a number of various sources. With almost half of the United States national domestic water supply originatng from groundwater, a system of monitoring for contamination should be implemented to ensure public health and safety. Monitoring water to assess its microbial safety has long relied on the detection of indicator microorganisms, total and fecal coliforms in particular. Coliform bacteria has exhibited …