Showing results for: groundwater pump Articles
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Groundwater management: a search for better policy combinations
Excessive groundwater pumping is now a global concern. There is no panacea for this problem, which needs to be addressed through continual policy improvements based on case studies. Good examples of the diversity of groundwater management are demonstrated by the Tokyo (Japan) and Orange County Water District (OCWD, California, USA) experiences. In Tokyo, excessive groundwater pumping was ...
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Horizontal Well Rehabilitation at NASA Facility
A horizontal groundwater extraction well at an active NASA facility in Louisiana was impacted by mineral scaling and bio-fouling affecting operations of the groundwater pump and the treatment system. A flow reduction of over 50% was observed. Directional Technologies, Inc. performed a series of horizontal well rehabilitation activities, that increases flow by 58%, which including mechanical and ...
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Privatization of Water-Resource Development
This paper analyzes the inefficiencies from market power and return-flow externalities in private construction of a water project. The model pays special attention to increasing groundwater pumping costs, project set-up costs, limited project capacity, and return flow to the aquifer. For a given capacity, the return-flow externality causes project owners to construct the project too late when the ...
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ROMAG stainless steel installations for the largest groundwater pumping station in Switzerland
The pumping station in Uetendorf near Thun, Switzerland, went into operation in March 2014, and pumps 25,000 l/min of water from a depth of 19 m. 40% of the drinking water in Switzerland is pumped out of groundwater streams. To guarantee an adequate long-term supply of drinking water in the greater region around the city of Thun, the public company WARET (Wasserversorgung Region Thun AG) was ...
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Development of a risk-based approach for better protection of drinking water catchments in Flanders (Belgium)
Around 70% of the drinking water produced by De Watergroep (a Belgian public water company) is extracted from 83 groundwater pumping sites. To control the risks that endanger the drinking water supply and for the groundwater extracted to be as pure as possible, a risk-based approach for the protection of the catchment areas is developed, as part of the water safety plans. The approach ...
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Assessing water demands and coverage sensitivity to climate change in the urban and rural sectors in central Chile
Snow dominated basins in the subtropics are susceptible to climate change, since evaporation and streamflows are affected, impacting key water sectors and increasing the risk of water shortages. This paper shows an integrated assessment of the impacts of climate change on the major water users in the Maipo Basin of Chile, allowing a direct comparison between competing sectors, describing their ...
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Case study – BTEX contamination - Kentucky
In 1992, remedial activities began at the Shively Service Center located in Radcliff, Kentucky. After the leaking underground storage tanks were removed from the site approximately 1,500 cubic yards of BTEX impacted soil was excavated and disposed off-site from the tank pits. Based on the review of historical sampling activities it was believed that the majority of the impacted soils were removed ...
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Cleo Springs, Oklahoma - in-situ chemical oxidation case study
A gasoline spill occurred when a fuel tanker was forced off this curve in rural Oklahoma. Initial responders were unsuccessful in their effort to remove all of the contaminated soil. Cedar Creek Engineering was contracted to remediate the residual soil and groundwater contamination. Here a recovery well and reagent injection points are installed. The treatment process called for Fenton's reagent ...
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Identifying the impact of Energy Base Water Project on groundwater using high-frequency monitoring data in the Subei Lake basin, Ordos, Northwestern China
Groundwater is increasingly exploited for energy production in arid regions, which necessitates a deeper insight into the impact of the enhanced human pressure on the groundwater. This study applied an integrated method (statistical analysis, water table fluctuation method, hydrograph analysis and remote sensing) to identify the impact of Energy Base Water Project on the groundwater in the ...
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Modelling biological Cr(VI) reduction in aquifer microcosm column systems
Several chrome processing facilities in South Africa release hexavalent chromium (Cr(VI)) into groundwater resources. Pump-and-treat remediation processes have been implemented at some of the sites but have not been successful in reducing contamination levels. The current study is aimed at developing an environmentally friendly, cost-effective and self-sustained biological method to curb the ...
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Bioaugmentation to Treat Chlorinated Solvents in Fractured Bedrock
ABSTRACT: An in situ bioremediation pilot study was performed at a former industrial site in New Jersey where groundwater has been impacted by historical releases of chlorinated solvents. The target area for treatment is a fractured, intermediate bedrock zone. The remedial objective at the Site is to treat the groundwater while minimizing the impact of the remedial system on the re-development of ...
By Redox Tech
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Groundwater Level and Surface Water Depletion Linked
Study’s computer model could be influential in future water management A new study looking at a century of groundwater declines in the continental United States has concluded that overpumping water from aquifers is responsible for up to half of the river flow declines that now threaten economies and public health in many regions. The study, funded by the U.S. Department of Energy, said ...
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E-Z Trays® Treating Multiple Groundwater Contaminants in Grand Island, NE - Case Study
The U.S. Environmental Protection Agency has launched an effort to treat contaminated groundwater in Grand Island, Nebraska. The Parkview Well Superfund Site consists of two areas of groundwater contamination, the Northern and Southern Plumes, which include several volatile organic contaminants including tetrachloroethene (PCE), 1,1-dichloroethene (DCE), 1,1,1-trichloroethane (1,1,1-TCA) and ...
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New study assesses the global volume and distribution of “modern” groundwater
Groundwater has long been an important resource for spraying, drinking water, energy production and more, but getting a clear picture of how much is available and being recharged over time has been a challenge. Now an international group of hydrologists led by Tom Gleeson, engineering professor at the University of Victoria, with fellow researchers from the University of Texas at Austin, the ...
By Ensia
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Perchlorate Remediation Project Case Study
ARCADIS was contracted in 2000 to lead the development, evaluation and selection of a final groundwater remedy for this 94-acre site in California. As part of this work, ARCADIS is also participating in the evaluation of innovative technologies with the potential to treat soil impacts in the multiple source areas across the site. Specifically, the project is focused on the remediation of seven ...
By Arcadis
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Groundwater remediation pump and treat carberry, Manitoba case study
Executive Summary Two of four underground gasoline tanks were removed from an old service station located in Carberry, Manitoba a number of years after the facility ceased operating. Two tanks were left on site and were used until 1985, when Manitoba Environment was notified that a domestic well in the vicinity of the abandoned site was contaminated with gasoline. The remaining tanks were ...
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Project profile - confidential client environmental remediation project Delray Beach, Florida
Background Levine Fricke Engineers (LFE), an environmental firm under contract to Blackstone Consultants LLC (Blackstone), was responsible for specifying and selecting a cleanup remedy for a former contaminated nursery site located in Delray Beach, Florida. LFE and Blackstone performed site characterization and demonstrated that site groundwater contained very high arsenic concentrations. ...
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Project profile - Orchard Highlands USEPA arsenic treatment demonstration Goffstown, New Hampshire
Background In 2004 AdEdge Technologies Inc. (AdEdge) was selected to implement six fullscale arsenic treatment demonstration projects as part of the USEPA Office of Research and Development arsenic research program (Round 2). These six sites were in addition to three USEPA Round 1 demonstration sites awarded to AdEdge in 2003. The purpose of the research effort is to provide information to ...
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Pump/Recharge Rate Affects Saltwater Intrusion
Untitled Document Many areas of the world use groundwater as their main source of fresh water supply. With the worlds population increasing at alarming rates, the fresh water supply is being continually depleted, increasing the importance of groundwater monitoring. One of the major concerns most commonly found in coastal aquifers, is the induced flow of salt water into fresh ...
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Extraction well design for DNAPL recovery.
The potential for downward migration of dense nonaqueous phase liquid (DNAPL) into deeper portions of a saturated hydrogeologic unit has important implications for successful groundwater remediation. Little information has been published regarding the design of extraction wells that allow DNAPL recovery without simultaneously creating a conduit for cross contamination by vertical migration ...
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