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 21 for “"brackish groundwater"”.
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Brackish Groundwater Desalination: A Decision Support Tool
… prior to choosing whether to embark on a brackish groundwater desalination program for their utility. The scholarly literature review indicated five areas of greatest importance for consideration when contemplating a brackish groundwater project. Those topics included power source, source …
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Treating Brackish Groundwater for Irrigation with Selective Electrodialysis & Nanofiltration
… Cartagena aquifer in southeastern Spain contains brackish groundwater that is considered low quality since it requires treatment prior to economic use. For example, the groundwater contains high concentrations of monovalent ions (Na⁺ and Cl⁻), which are detrimental to crop growth and must be …
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Desalination of brackish groundwater in the United States : minimum energy requirements
… has motivated rising interest in desalinating brackish groundwater to meet fresh water demand. Various organizations in the United States have collected more hydrological and chemical data from the growing number of wells. Yet, only one national assessment of groundwater resource distribution …
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Review of Membrane-Based Brackish Groundwater Desalination and Pretreatment in the United States
Membrane-based brackish groundwater desalination increases freshwater supply, which is especially significant in arid, land-locked regions. Brackish groundwater is a widely available but underutilized alternative water source in the United States, where the risk of water scarcity is increasing in …
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Removal rates of electrolytes commonly found in brackish groundwater by means of electrodialysis reversal desalination
This thesis tested and analyzed the removal rates of six different electrolytes: NaCl, Na2SO4 , MgCl2 , K2SO4 , Ca(NO3 )2, and CaSO4 when using electrodialysis reversal (EDR) desalination. A bench top EDR set-up was designed and built, and this set-up was used to desalinate feed water with initial …
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Evaluation of hybrid treatment configurations of granular activated carbon and alternative adsorbents for per- and polyfluoroalkyl substances removal from surface water and groundwater
… waters: PFAS spiked tap water, stormwater; and brackish groundwater. Additionally, this study evaluated three lead-lag systems (GAC-IX, FS-IX, and GAC-FS) and developed a costing approach to compare the cost-effectiveness of these configurations. Based on the media performance, usage rate, and …
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Geochemical Evidence for Vertical Migration of Deep Formation Fluids through the Baton Rouge -Denham Springs Fault System
<p>Accumulations of brackish groundwater exist across south Louisiana within the shallow, south-dipping Pleistocene to Upper Miocene Baton Rouge Aquifer System (BRAS). This research investigates the source of brackish groundwater through geochemical analysis of representative groundwater samples by …
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Performance and economics of monovalent selective electrodialysis desalination for irrigation
… of irrigation source water and wastewater. Brackish groundwater, seawater, and agricultural effluent often contain both monovalent ions damaging to crops (Na⁺, Cl⁻) and divalent ions beneficial for crops (Ca²⁺, Mg²⁺, SO²⁻₄). RO removes both types of ions. These beneficial ions must then be …
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Analysis of sustainable water supply options for Kuwait
… currently relies heavily on desalination and brackish groundwater extraction. The options considered for increasing the flux of potable water into Kuwait include expanding the desalination capacity, importing water from other countries, expanding the uses of reclaimed wastewater, and rainfall …
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Computational design and optimization of infrastructure policy in water and agriculture
… agricultural and municipal water demands in groundwater aquifer withdrawals and lastly we evaluate the use of Photo Voltaic powered Electro Dialysis Reversal (PV-EDR) as a potential technology to desalinate brackish groundwater through a multidisciplinary system design and optimization …
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Direct solar photovoltaic powered reverse osmosis plant
The availability of fresh groundwater in regions with low rainfall in the western parts of South Africa is limited. Especially in regions where sheep farming is prevalent and farms have to be big and thus remote to be profitable. The big and remote nature of these farms means that boreholes on the …
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The energy-water nexus : an analysis and comparison of various configurations integrating desalination with renewable power
… gaining increasing attention is desalination of brackish groundwater. However, desalination is an energy-intensive process and could have negative impacts in the energy sector if conventional approaches are used. Relying on fossil fuels for desalination could drive up carbon dioxide emissions …
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Small scale desalination in South Africa with particular reference to solar distillation
… arid parts of South Africa are often reliant on brackish groundwater for their drinking water, sometimes to the detriment of their health. The quality of their drinking water is of concern to these communities and they are willing to pay for the means of improving their drinking water quality. A …
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Assessing the energy implications of exploiting stormwater, through artificial aquifer recharge, as an alternative water source in the Cape Flats, South Africa
… desalination, water re-use and abstraction of groundwater, to increase potable water supplies. The Cape Flats Aquifer represents a significant water resource for Cape Town and its yield can be further augmented by using artificial recharge with stormwater. Due to the location and water quality …
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The design and control of a thermal management system for a photovoltaic reverse osmosis system
… 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 lower the …
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Implementing a treated wastewater recharge technique and reverse osmosis unit system for water sustainability
… design system consists primarily of utilizing brackish groundwater in conjunction with treated wastewater augmentation and a reverse osmosis unit. The dissertation considered two types of simulation models for the conceptual design system approach. These models are the lump model approach and …
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Desalination systems for the treatment of hypersaline produced water from unconventional oil and gas processes
… systems are well understood in oceanographic and brackish groundwater contexts, their performance and design at significantly higher salinities is less well explored. In this thesis, this gap is addressed from the perspective of two major themes: energy consumption and scale formation, as these …
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Time-variant solar-powered electrodialysis reversal desalination for affordable off-grid clean water supply
… reversal 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 …
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Making Decentralized Desalination More Affordable Using Improved Process Design, Control, and Energy Recovery
… is uncommon, many have resorted to desalinating brackish groundwater to meet their drinking needs. This form of decentralized treatment is performed at the community-scale, as is common in rural areas, and within individual homes, using point-of-use (POU) purifiers. This thesis develops methods …
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The geochemical evolution of saline groundwater within a fresh water aquifer south of Oakes, North Dakota
<p>An area of saline/brackish groundwater south of Oakes, North Dakota has been reported by the North Dakota State Water Commission. The concentrated water (over 12,000 mg/L of total dissolved solids) is in direct hydraulic connection with relatively fresh water and shows an abrupt change in …
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