Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 247 for “"clean water"”.
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Sediment Management for Aquatic Life Protection Under the Clean Water Act
… sediment presents a threat to natural freshwater ecosystems. Sediment management is complicated because sediment can be dissolved in the water column, suspended as particles in the water column, or rest on the bottom of the stream bed, and can move between these forms (e.g. bedded sediment …
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Improving Accessibility of safe and clean water in Maroroni ward in Meru district, Arusha
… It was depicted that inaccessibility of safe and clean water among various communities of Maroroni ward is the major pressing need which require immediate attention. When the problem was analysed using participatory tools such as questionnaires, survey and focus group discussion, it was found that …
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Time-variant solar-powered electrodialysis reversal desalination for affordable off-grid clean water supply
… systems capable of desalinating brackish water in remote locations of developing countries, and thereby increase the availability of freshwater in water-stressed areas such as rural India. At the village scale, electrodialysis technology for brackish groundwater desalination has the …
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Meeting the mandate for clean water : an evaluation of privately managed U.S. water and wastewater systems
Reliable provision of clean and safe drinking water is critical for public health, economic stability and growth in the United States. Due to a combination of financial, regulatory and operational challenges, however, it is becoming increasingly difficult for publicly owned and operated water …
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Clean water: a long-term water quality monitoring network to evaluate restoration of Hickory Run at the Mt. Cuba Center
… of many anthropogenic inputs so commonly seen in water bodies throughout the Mid-Atlantic. Because of this the effects of these restorative efforts can be directly observed through rigorous water quality monitoring, and reasonable connections can be drawn between ecosystem changes and their …
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The Influence of the Clean Water Act and Tributaries on the Fish Community of the Big Sioux River, South Dakota
… site near the mouth that represented the entire watershed. Levels of nitrate and phosphorus were higher since 1974. Other water quality parameters (i.e., suspended solids and fecal coliform) have not changed across years. Species migrating up tributaries to spawn were white suckers Catostomus …
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Differing perceptions and the resulting uncertainty of public policy: An examination of the Clean Water Act's Section 404 Regulatory Program
A principal planning function is to formulate and implement policies which are designed to ameliorate perceived societal problems. Much of the planning literature therefore centers on the preparation of comprehensive plans or the formulation of public policy. Despite this attention, plans and …
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Clean water for all: The demographics of urban and rural safe drinking water challenges in Virginia, USA and San Rafael Las Flores, Guatemala
… 6, universal access to safely managed drinking water and sanitation service, as a global goal for 2030. In rural areas, access lags significantly and progress is rarely examined concurrently between developed and developing nations. Therefore, this dissertation focuses on rural water system …
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Scalable, Solar Powered Membrane-Based Water Purification Systems for Community Development in Developing Countries
… University (ERAU) to deliver sustainable water purification systems and originate a companion micro-business to sell excess clean water in communities in Haiti. Since 2010, students and faculty from ERAU have partnered with strategic partners to not only provide clean water to their …
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The design and control of a thermal management system for a photovoltaic reverse osmosis system
… (RO) is a well-known process for desalinating seawater and brackish groundwater. Desalination is energy-intensive, so using photovoltaic (PV) panels to power the process is an attractive environmentally friendly concept, especially for community-scale systems. Increasing the system efficiency will …
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Surface-subsurface interactive flow simulation using a surface element concept
"Clean water is essential to agriculture, industry and urban development. Protecting clean water from pollution is an important goal. One category of water pollution is called ""Nonpoint Source Pollution"" (NPS). This category includes all sources that do not issue from a distinct pipe or outlet. …
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Autonomous control and membrane maintenance optimization of photovoltaic reverse osmosis systems
The supply of clean water in remote and off-grid areas has been a major global challenge for humanity. Over 780 million people lack access to clean water [1]. However, a significant fraction of these people have access to undrinkable surface, brackish or sea water. A promising solution to this …
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Wetland mitigation banking as a tool for conservation
… mitigation banking under Section 404 of the Clean Water Act be employed by land trusts and conservation groups to generate revenue for funding land acquisitions and on-going stewardship for both wetland and wetland-related upland habitats threatened or impacted by development. Conservation …
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Educational Concerns of Implementing Biosand Water Filters in Rural Uganda
<p>The world is facing a shortage of clean drinking water. Current predictions, due to growing population, urbanization, and climate change estimate access to clean water to be further challenged in the coming years. Research has indicated that point of use (POU) technologies are likely to be the …
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Neoliberalism, the Environmental Protection Agency, and the Chesapeake Bay
… As seen through regulations such as the Clean Water Act, neoliberal pressure has altered the priorities of government on a federal level to prioritize economic well-being over that of other social goods, such as environmental protection. The Clean Water Act prioritizes economic …
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Determination of mechanism of zinc resistance in Chironomus riparius: a physiological/energetic approach
… were made between larvae that were cultured in clean water conditions and larvae from cultures that had been exposed to 10 ppb zinc for over a year and a half. Instar III larvae from clean water cultures showed significant reductions in growth and respiration rates when exposed to zinc …
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The Impact of Borehole Wells and a Hygiene and Sanitation Program on Diarrhea: Evidence from Rural Southwest Uganda
… approximately 2,089 children a day (WHO, 2013). Clean water access, sanitation facilities, and good hygiene behavior are solutions to decreasing child mortality and morbidity caused by fecal contamination. I estimate the impact of borehole wells and a hygiene and sanitation program on diarrhea by …
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Design of a mobile community level water treatment system based on Humidification Dehumidification desalination
… technology aims to be applied at community level water supplies, bringing clean water to those countries with inadequate water infrastructure. The mobility provided by the model would allow the HDH based desalination setup to be moved to other communities with a higher demand for clean water at a …
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