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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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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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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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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Temporary Construction Dewatering Solutions
Mention “dewatering” to anyone outside of the underground construction trade, and typically, with a blank stare, they’ll ask what is D-watering? Mention dewatering to anyone in the underground construction trade, and they’ll likely state that it is one of the most important phases in the project, as a well designed and installed dewatering system will allow them to ...
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Your Guide to Submersible Pump Functions and Benefits
Submersible pumps are devices with hermetically sealed motors that are close-coupled to their bodies. The entire pump assembly remains submerged in the fluid that has to be pumped. The main submersible water pump function is to drain water from various places. Submersible pumps are used in a wide range of applications, from groundwater pumping to sewage treatment. These pumps can drain ...
By DAE Pumps
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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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Hydrogeological and economical simulations: emergency water supply for Muscat
Urban water in Gulf Cooperation Council countries is principally supplied from desalination plants. However, desalination could be interrupted by natural hazards such as cyclones or harmful algal blooms. Four scenarios have been considered to help public institutions in Muscat to establish a water strategy for emergency situations. The numerical simulations of groundwater pumping have shown ...
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Dewatering Crews Keep the Alameda Corridor Dry and Open for Business
Griffin installed a multitude of deep wells along the alignment of the proposed railway to allow for construction. The discharge from the wells was pumped via large diameter high density polyethylene pipe (HDPE) to a below grade mixing vault, where a neutralizing agent was introduced to the groundwater as the quality of the groundwater was not allowed to discharge to the designated receiving ...
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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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The dynamic programming management model of groundwater with covariates: a case study for the Songyuan area, Jilin Province, China
This research analysed the action and characteristics of the relationship between mutual-feed joint-variations of groundwater. On this basis, a theory and method for constructing a dynamic programming management model for groundwater with covariates was proposed which used the state transition equation method. The model was solved using the differential dynamic programming (DDP) method. ...
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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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Impact of pumping in open pit mining on groundwater flow: a case study
The groundwater flow behaviour was analysed during pre-monsoon, monsoon, and post-monsoon seasons. At first, the groundwater model was analysed in the steady state, and then the same was applied in the transient state to predict the spatio-temporal behaviour of groundwater in the region. Transient flow model was also developed to estimate the potential impact of pumping of groundwater due to ...
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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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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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