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Full-Text Articles in Engineering
Cation Exchange In Glacial Till Subjected To Highway Deicing Agent Infiltration, Niki Kallergis
Cation Exchange In Glacial Till Subjected To Highway Deicing Agent Infiltration, Niki Kallergis
Environmental & Water Resources Engineering Masters Projects
The site studied in this research project is owned by the Massachusetts Highway Department and has been used as a storage facility since the 1960's. The area has been characterized as a drumlin of glacial till composition. Improper storage practices occulTed during two decades (1960's - 1980's) by stockpiling deicing agents outdoors. Previous investigations verify groundwater contamination due to brine infiltration and establish several properties of the soil and the aquifer hydraulics. The chloride ion is unreactive and transported with groundwater molecules; however, field data and theory suggest that dissolved sodium partakes in cation exchange with sorbed cations on clay …
Modeling Fate And Transport Of Fecal Coliform In Wachusett Reservoir, Thomas P. Matthews
Modeling Fate And Transport Of Fecal Coliform In Wachusett Reservoir, Thomas P. Matthews
Environmental & Water Resources Engineering Masters Projects
The Wachusett Reservoir, located in central Massachusetts is an unfiltered, ozonated / chloraminated drinking water supply which serves 2.3 million customers in Boston, Massachusetts and surrounding communities. The Massachusetts Department of Conservation and Recreation (DCR) is responsible for managing and protecting the Wachusett Reservoir and surrounding watershed. The Massachusetts Water Resources Authority (MWRA) operates the water supply system and the Carroll Water Treatment Plant (CWTP). In addition, DCR manages and maintains the Quabbin Reservoir and watershed located in western Massachusetts. The Wachusett and Quabbin Reservoirs provide high quality water to consumers due to pristine watersheds and long hydraulic retention time. …
The Use Of Numerical Modeling Techniques To Optimize Groundwater Withdrawls And Minimize Streamflow Depletion, Yamen Hoque
The Use Of Numerical Modeling Techniques To Optimize Groundwater Withdrawls And Minimize Streamflow Depletion, Yamen Hoque
Environmental & Water Resources Engineering Masters Projects
Groundwater reserves can be a valuable resource in alleviating rising water demands worldwide. The groundwater is generally pumped out of surficial aquifers using withdrawal wells. However, unregulated groundwater withdrawals can impact the flow in nearby streams negatively, causing streamflow depletions. This can hinder the ecological balance of streams and endanger the aquatic life fonTIs that call such streams home. Therefore, groundwater withdrawals must be carried out using a well managed withdrawal strategy. Rhode Island has a growing annual water demand that has been projected to exceed current supply in parts of the state by 2020. As a result, several new …
The Use Of Numerical Modeling Techniques To Optimize Groundwater Withdrawls And Minimize Streamflow Depletion, Yamen M. Hoque
The Use Of Numerical Modeling Techniques To Optimize Groundwater Withdrawls And Minimize Streamflow Depletion, Yamen M. Hoque
Environmental & Water Resources Engineering Masters Projects
Groundwater reserves can be a valuable resource in alleviating rising water demands worldwide. The groundwater is generally pumped out of surficial aquifers using withdrawal wells. However, unregulated groundwater withdrawals can impact the flow in nearby streams negatively, causing streamflow depletions. This can hinder the ecological balance of streams and endanger the aquatic life fonTIs that call such streams home. Therefore, groundwater withdrawals must be carried out using a well managed withdrawal strategy. Rhode Island has a growing annual water demand that has been projected to exceed current supply in parts of the state by 2020. As a result, several new …
Evaluation Of Nutrients Along The Blackstone River, Megan M. Patterson
Evaluation Of Nutrients Along The Blackstone River, Megan M. Patterson
Environmental & Water Resources Engineering Masters Projects
The University of Massachusetts Blackstone River Water Quality Study was conducted in August of 2005 through November of 2006. Water quality was monitored throughout two dry weather events and five wet weather events along the Blackstone at over 20 sites from the headwaters downstream to Woonsocket, Rhode Island. Special emphasis was placed on the analysis of the nutrient loadings crossing the Massachusetts/Rhode Island state border. Continuous nitrate and phosphate readings were collected at the state line using MicroLABs. The MicroLAB results required a high degree of data adjustment; duplicate samples are recommended to ensure future data quality. Data from events …
Ground Water Management, Gwm, Formulations To Control Subsidence In A Large Scale Transient Problem, Gemma Baro-Montes
Ground Water Management, Gwm, Formulations To Control Subsidence In A Large Scale Transient Problem, Gemma Baro-Montes
Environmental & Water Resources Engineering Masters Projects
The objective of this study is to test different formations with a new optimization program. The area under study is located close to Los Angeles, and it has experienced a large drawdown of the water table, with related subsidence. The analyses utilizes Ground Water Management (GWM), a public domain code distributed by the USGS as a process within MODFLOW 2000. The different algorithms within GWM were tested with a large-scale transient unconfined system. The different analysis allowed the verification of the program. In this application, GWM is used to optimize the resources, and the MODFLOW packages from the LANOPT Model …
Treatment Of Domestic Wastewater Using An Anaerobic Membrane Bioreactor: Performance And Characterization, Joseph C. Fermanian
Treatment Of Domestic Wastewater Using An Anaerobic Membrane Bioreactor: Performance And Characterization, Joseph C. Fermanian
Environmental & Water Resources Engineering Masters Projects
Anaerobic wastewater treatment has many advantages over aerobic treatment, however, factors that limit its application are the relatively high concentration of soluble organic matter in the effluent and poor settling characteristics of anaerobic sludge. Membrane filtration provides exceptional solids removal and biomass retention that can improve the biological treatment process as has been seen with aerobic MBR. The application of anaerobic processes and anaerobic membrane bioreactors (AnMBR) has been limited primarily to industrial wastewaters. The use of AnMBR in treating domestic wastewater is of great interest; however, it has not been studied sufficiently to implement on a large scale commercial …
Evaluation And Optimization Of A Pcr Assay And Multiple Regression Model For The Detection Of Rhodococcus Corprophilus, Stephen Clark
Evaluation And Optimization Of A Pcr Assay And Multiple Regression Model For The Detection Of Rhodococcus Corprophilus, Stephen Clark
Environmental & Water Resources Engineering Masters Projects
Rhodococcus coprophilus is an emerging tool in the microbial source tracking "tool-box". The actinomycete is a source specific indicator for grazing animal fecal contamination. Once thought of as less harmful to human health, concern over animal fecal contamination has increased with the greater understanding of zoonoses. Zoonotic organisms that have the ability to cause disease in both humans and animals. Major outbreaks from these pathogens have increased their awareness and created a need for better source water protection. The presence of Rhodococcus coprophilus has been shown to have the ability to indicate grazing animal fecal contamination but it's current detection …
Basin-Scale Methodology For Evaluating Relative Impacts Of Pollution Source Abatement, James T. Mangarillo
Basin-Scale Methodology For Evaluating Relative Impacts Of Pollution Source Abatement, James T. Mangarillo
Environmental & Water Resources Engineering Masters Projects
The Blackstone River watershed covers an area of 475 me in central Massachusetts and northern Rhode Island. The Blackstone flows from its headwaters in the hills above Worcester, MA, through Woonsocket, RI and finally joins the Seekonk River in Pawtucket, RI. The Seekonk then flows into the Providence River on its way into Narragansett Bay. The historical significance of the Blackstone River has been recognized at the federal, state and local levels. Furthermore, the Blackstone is known to playa significant role on the hydrology and ecology of Narragansett Bay. This study is part of a larger study designed to evaluate …