Showing results for: groundwater pump Articles
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Seeking optimal groundwater pumping strategies at Pinggu District in Beijing, China
A simulation-based fuzzy optimization method (SFOM) was proposed for regional groundwater pumping management in considering uncertainties. SFOM enhanced the traditional groundwater management models by incorporating a response matrix model (RMM) into a fuzzy chance-constrained programming (FCCP) framework. RMM was used to approximate the input–output relationship between pumping actions ...
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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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In-Situ Remediation of Heavy Metals Using Sulfur-Based Treatment Technologies
The Metal Problem Highly toxic and highly soluble metals are contained in numerous waste streams including those from power, chemical, electronics facilities, general manufacturing plants, and mining facilities. Lead, chromium, arsenic, zinc, cadmium, copper, and mercury are the most common metal contaminants found on remediation project sites (US EPA, October, 2000). Cyanide is a common ...
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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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Case study - Rapid removal of chloroethenes at industrial sites
Description Air sparging with trenches had failed to remove groundwater and soil contamination at an industrial Superfund site in Piedmont soils in South Carolina. The major contaminants of concern were cis 1,2-dichloroethene (DCE) and trichloroethene (TCE) ranging from 0.5 to 2.0 mg/L. The treatment area was approximately 15,000 square feet. Ozone sparging was chosen as preferred ...
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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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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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Sustainable groundwater modeling using single- and multi-objective optimization algorithms
This study presents the first attempt to link the multi-algorithm genetically adaptive search method (AMALGAM) with a groundwater model to define pumping rates within a well distributed set of Pareto solutions. The pumping rates along with three minimization objectives, i.e. minimizing shortage affected by the failure to supply, modified shortage index and minimization of extent of drawdown ...
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Effective Groundwater Monitoring Using Dedicated Pumping Tubes
This article describes a groundwater monitoring procedure that does not require decontamination of pumping equipment, eliminates the chance of cross contamination between wells, and uses a surface pump. Two surface pumps are described, one for water level depths less than 25 feet and one for water level depths greater than 25 feet. Install Dedicated Pumping Tubes A dedicated pumping tube ...
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Assessment of water qualities and evidence of seawater intrusion in a deep confined aquifer: case of the coastal Djeffara aquifer (Southern Tunisia)
Geochemical analyses of groundwater samples from the Djeffara confined aquifer (Southern Tunisia) were performed. The distribution of saline waters was investigated to identify the origin of the groundwater contamination. The aquifer was shown to be affected by an abnormal increase in groundwater salinity. Near the recharge zone, the groundwater salinity does not exceed 2.5 g l−1 but ...
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In-Situ Remediation of Heavy Metals Using Sulfur-Based Treatment Technologies
THE METALS PROBLEM: Highly toxic and highly soluble metals are contained in numerous waste streams including those from power, chemical, electronics facilities, general manufacturing plants, and mining facilities. Lead, chromium, arsenic, zinc, cadmium, copper, and mercury are the most common metal contaminants found on remediation project sites (US EPA, October, 2000). Cyanide is a common ...
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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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Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump
This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down. A one-way valve on the bottom admits water on the down stroke and retains water on the ...
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Optimal groundwater contamination monitoring using pumping wells
This study presents a new method for selecting monitoring wells for optimal evaluation of groundwater quality. The basic approach of this work is motivated by difficulties in interpolating groundwater quality from information collected for only few sampled wells. The well selection relies on other existing data relevant to contaminant distribution in the sampling domain, e.g. predictions of ...
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