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Showing 1 to 20 of 23 for “"Managed Aquifer Recharge"”.
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Groundwater Modeling of Managed Aquifer Recharge at the Regional and Local Scale
… Hampton Roads Sanitation District is heading a Managed Aquifer Recharge project designed to build water resiliency for the district as well as meet recent regulations concerning effluent released into the Chesapeake Bay. The Sustainable Water Initiative for Tomorrow (SWIFT) project will include …
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Enhanced removal of emerging contaminants during managed aquifer recharge using optimized operating conditions
… effective water treatment systems are essential. Managed aquifer recharge (MAR), including riverbank filtration (RBF) and artificial recharge and recovery (ARR), offers an effective and promising means for providing safe drinking water. However, in order to reduce the physical footprint of these …
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Transport of Per- and Polyfluoroalkyl Substances (PFAS) at a Managed Aquifer Recharge Site
In response to aquifer overuse and its related issues in eastern Virginia, the Hampton Roads Sanitation District (HRSD) is conducting a managed aquifer recharge (MAR) project called the Sustainable Water Initiative For Tomorrow (SWIFT). The objective of the SWIFT program is to treat wastewater to …
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Novel Multitemporal Synthetic Aperture Radar Interferometry Algorithms and Models Applied on Managed Aquifer Recharge and Fault Creep
… rate variations. The study further investigates Managed Aquifer Recharge (MAR) as a nature-engineering-based solution in the Santa Ana Basin. Analyzing surface deformation from 2004 to 2022 demonstrates MAR's effectiveness in curbing land subsidence within Orange County, CA. Additionally, MAR has …
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Evaluating the Occurrence, Fate and Human Health Risks of Contaminants of Emerging Concern in the Atlantis Managed Aquifer Recharge Scheme
Managed aquifer recharge (MAR) using stormwater and treated effluent is a vital strategy for sustaining urban aquifers used for potable supply in water-scarce regions. However, the quality of these recharge waters is a concern, as they often contain contaminants of emerging concern (CECs) that may …
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Addressing climate-driven challenges in groundwater management and coastal hydrogeology through numerical modeling
… first two chapters examine the SWIFT Project, a managed aquifer recharge initiative for the Potomac Aquifer in coastal Virginia. Numerical models show that injections can induce pressure transients in basement rock, potentially triggering seismicity, but gradual injection increases help mitigate …
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Assessment of a Passive Sampler for Aquifer Microbial Community Profiling and Comparison of Porous Media
Managed aquifer recharge (MAR) with advanced treated wastewater is a promising strategy to combat aquifer depletion; however, its impact on native microbial communities remains insufficiently characterized. Concerns include the potential introduction of pathogens, antibiotic resistance genes …
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Fluid and Pressure Dynamics in Natural and Engineered Coastal Aquifer Systems
Coastal aquifers are increasingly impacted by groundwater depletion, seawater intrusion, and land subsidence driven by long-term pumping. This dissertation uses 3D numerical modeling to evaluate how variable-density flow and geological heterogeneity influence pressure response, intrusion geometry, …
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Evaluation of Soil Aquifer Treatment in a Lab Scale Soil Column Experiment
Soil aquifer treatment (SAT) during managed aquifer recharge has been studied as a method of providing additional environmental barriers to pathogens and contaminants in indirect potable reuse (IPR) applications. A soil column study was conducted by Hampton Roads Sanitation District in order to …
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Evaluation of Contaminant Removal Through Soil Aquifer Treatment by a Lab Scale Soil Column Experiment Including a Trace Contaminant Spike Test
Soil aquifer treatment (SAT), the removal of contaminants during percolation through soil, is a strategy employed in managed aquifer recharge (MAR), one method of indirect potable water reuse. As part of Hampton Roads Sanitation District's (HRSD) MAR project, The Sustainable Water Initiative for …
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The viability of transforming stormwater detention ponds into infiltration ponds on the Cape Flats, South Africa
… water security, including groundwater use with managed aquifer recharge (MAR). A previous simulation-based study found that stormwater harvesting (SWH) via MAR was viable in Cape Town and proposed implementing MAR in retrofitted detention ponds overlying the unconfined Cape Flats Aquifer (CFA). …
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Roles of Nano- and Micro-Scale Subsurface Geochemical Reactions on Environmentally Sustainable Geologic CO2 Sequestration
… permeability, and pollutant transport in aquifers. Despite their importance, nano- and micro-scale subsurface geochemical reactions are far from well-understood.</p><p>Clay mobilization has been reported to decrease aquifer permeability during water flooding, and clay minerals are abundant …
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Chemistry of Nanoscale Solids and Organic Matter in Sustainable Water Management Systems
… (WWTPs), water desalination plants (WDPs), and managed aquifer recharge systems (MARs) are three representative sustainable water management (SWM) systems. But the operation of all three poses two fundamental questions: (1) What is the fate of nanoscale solids (e.g., engineered nanomaterials, …
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Transition to Novel Internet of Things Technology for Management of Groundwater Resources? Case of Cape Town, South Africa
… quantitative/qualitative characterisation of the aquifer. It is vital to confirm the groundwater parameters during hydrogeological investigations as groundwater depends on factors like geology, climate, lithology, slope and many others. However, there needs to be sufficient data to conduct these …
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Groundwater Modeling and Hydrogeological Parameter Estimation: Potomac Aquifer System, SWIFT Research Center
… (SWIFT) project in eastern Virginia is a Managed Aquifer Recharge project designed to alleviate the depletion of the Potomac Aquifer System due to unsustainable groundwater withdrawals. At the SWIFT Research Center (SWIFTRC) in Nansemond, VA, a pilot testing well (TW-1) has been …
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Removal of Total Organic Carbon and Emerging Contaminants in an Advanced Water Treatment process using Ozone-BAC-GAC
… up to treat a total of 120 MGD of water for managed aquifer recharge. Overall the lessons learnt from this study can give a better understanding of a carbon-based treatment and further the advancement of reuse projects that have drivers other than water scarcity.
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Review and gap analysis of Water Sensitive Urban Design (WSUD) in Windhoek, Namibia
… IUWM include Water Demand Management (WDM), Managed Aquifer Recharge (MAR) and Water Conservation (WC). In order for Windhoek to transform into a Water Sensitive City, the implementation of WSUD is imperative. Although the CoW has implemented measures towards IUWM, more options still need to …
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The capacity of the Cape Flats aquifer and its role in water sensitive urban design in Cape Town
… investigates the capacity of the Cape Flats Aquifer (CFA), assessing the feasibility of implementing Managed Aquifer Recharge (MAR) as a strategy for flood prevention and supplementing urban water supply. The implementation of MAR on the CFA aims to facilitate the transition towards …
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Evaluating the potential for Blue-Green Infrastructure benefits using the case study of stormwater ponds in Cape Town, South Africa
… Of the ponds, 12% had a high potential for Managed Aquifer Recharge for ‘Increasing water re-use'. This was largely because they overlie a shallow sandy primary aquifer in the city. For ‘Incorporating stormwater quality limitations', almost half of the ponds (46%) were within 200 m of a …
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Assessment and characterization of dissolved organic nitrogen removal in simulated soil aquifer treatment systems
… As part of the water reuse programs, soil aquifer treatment systems are widely applied to enhance groundwater resources and the quality of treated wastewater by providing environmental barriers, including soil and water. There have been decades of applied research on different types of …
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