groundwater remediation Articles
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Groundwater remediation using simulation-optimisation approach: A review
Optimal design of a remediation system has been an active and important area of research since the past several years due to its potential to reduce the remediation cost substantially. The paper presents the state-of-the-art for application of simulation-optimisation approach to design an optimal groundwater remediation system. In the simulation-optimisation approach, the researchers have used ...
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Technology Overview Report: Ultraviolet/Oxidation Treatment
ABSTRACT This technology report is an overview of information collected by GWRTAC on ultraviolet/oxidation as applied to ex-situ groundwater remediation. Information provided includes an introduction to the principles and techniques associated with this technology, a general discussion of its applicability to remediation, limited cost data relating to results of its use, and advantages and ...
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Groundwater Remediation
Groundwater remediation or clean-up is required when concentrations of contaminants exceed or are expected to exceed predetermined levels for the type of resource that is impacted (Grossman et.al., 2008). For example, lead levels in drinking water should not exceed the EPA action level of 0.015 mg/L. What caused the high levels of lead? How can the lead be removed from the aquifer? (Grossman ...
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Recent papers in groundwater remediation
Computational cost is a critical issue for large-scale water resource optimization under uncertainty, since time-intensive Monte Carlo simulations are often required to evaluate over multiple parameter realizations. This paper presents an efficient approach for replacing most Monte Carlo simulations with efficient surrogate models within a noisy genetic algorithm (GA). The surrogates are trained ...
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Hydrogenotrophic denitrification in an attached growth reactor under various operating conditions
To study the performance of an attached growth reactor on nitrate-nitrogen (NO3-N) removal by a hydrogenotrophic denitrification process, the reactor was operated under various H2 flow rates (30, 50 and 70 mL/min), hydraulic retention times (HRTs) (2.6, 3.1, 4.7 and 6.7 h) and inorganic carbon (IC) concentrations (excess and no IC addition). Synthetic NO3-N water was prepared in accordance with ...
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Groundwater Remediation Methods
Groundwater contamination is a significant environmental challenge faced by many regions worldwide. Pollution resulting from hydrocarbons and other contaminants can have disastrous consequences on both the environment and human health. Therefore, the need for effective groundwater remediation methods cannot be overemphasized. In this article, we will discuss some of the groundwater remediation ...
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Groundwater Remediation Strategies Tool
This guide provides strategies for focusing remediation efforts on 1) the change in contaminant mass flux in different subsurface transport compartments (e.g. the vadose zone, smear zone or a zone within an aquifer of interest) and 2) the change in remediation timeframe. In this approach, groundwater flow and contaminant concentration data are combined to estimate the rate of contaminant ...
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Soil and groundwater remediation
At a site in northern Indiana on behalf of a multinational client, Troy Risk operated a groundwater remediation system to cleanup the source of chlorinated solvent impact to a groundwater aquifer system. Prior to 1988, the site was occupied by a manufacturing facility. In March 1995, chlorinated volatile compounds (CVOCs) were detected pursuant to due diligence for real estate refinancing. From ...
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Enhanced degradation of trichloroethene by sodium percarbonate activated with Fe(II) in the presence of citric acid
Trichloroethene (TCE) degradation by Fe(II)-activated sodium percarbonate (SPC) in the presence of citric acid (CA) in aqueous solution was investigated. The results indicated that the presence of CA enhanced TCE degradation significantly by promoting HO• generation. The presence of Cl−, HCO3− and the initial solution pH appeared to be not negligible on the effect of TCE oxidation, while ...
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Optimal Latin hypercube sampling-based surrogate model in NAPLs contaminated groundwater remediation optimization process
A surrogate model based groundwater optimization model was developed to solve the non-aqueous phase liquids (NAPLs) contaminated groundwater remediation optimization problem. To illustrate the impact of sampling method improvement to the surrogate model performance improvement, aiming at a nitrobenzene contaminated groundwater remediation problem, optimal Latin hypercube sampling (OLHS) ...
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Utilization of Zero-Valent Iron nanoparticles (nZVI) for in-situ groundwater remediation including recent field scale application and remediation experience
Presentation outline Introduction: nZVI products & characteristic nZVI processing and application Technology implementation Field groundwater remediation experiences Conclusions NANO IRON company profile NANO IRON, s.r.o. established in 2008 Zero-Valent Iron nanoparticles (nZVI) industrial production in large quantities Worldwide distribution Technical support Technology ...
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Different Methods of Groundwater Remediation
Groundwater remediation is essential in a wide range of businesses, from drinking water extraction to mining. It’s hugely important to have the best water treatment system in place to help. Here are a few different methods that are used in water remediation that you may need to incorporate into your plan. Physical Remediation Water purification starts on a physical level, with the removal ...
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Groundwater Remediation Case Study
Wastewater Treatment Success Stories Groundwater Remediation This sample is representative of the ground water that contains diesel fuel from years past. The facility currently uses traditional coagulation/flocculation prior to carbon filters. The objective is to reduce the organic load to the carbon filters to extend life of the carbon filter. The treatment was performed with the addition ...
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PFOA/PFOS Stormwater Treatment - Groundwater Remediation - Case Study
Industry: Military – Air National Guard Location: Horsham, PA Capacity: 250 GPM (946 liters per minute) Installed: 2021 Following several years of piloting ion exchange resin for the removal of perfluorinated compounds, CKS Engineers needed to design and construct a full-scale system to treat the former military base stormwater runoff before entering Neshaminy ...
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Alberta Tier 1 Soil and Groundwater Remediation Guidelines
The Alberta Tier 1 Soil and Groundwater Remediation Guidelines are developed and updated by Alberta Environment and Parks through the legislative basis provided by the Water Act(Government of Alberta, 2000) and the Environmental Protection and Enhancement Act(Government of Alberta, 2006). The Tier 1 guidelines are generic and were created to protect sites that are found on the more sensitive side ...
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Bacterium Shows Promise in Groundwater Remediation
Dioxane contamination of groundwater is both common and hard to deal with, particularly when the molecule occurs concurrently with the compound 1,1-DCE. Microbe could prove an economical, environmentally sound method of addressing stubborn dioxane co-contamination A pair of industrial solvents associated with cosmetics and household cleaning products has been detected at thousands of aquifer ...
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Remediation of TCE DNAPL under an operating industrial manufacturing facility - air force plant 4 Fort Worth, TX
As a subcontractor to URS Corp., TRS designed, installed and operated a full-scale Electrical Resistance Heating(ERH) remediation system covering an area of about 1/2 acre inside Building 181 at Air Force Plant 4 in Fort Worth, TX. This is the most complex application of ERH ever completed inside and underneath an operating, heavy industrial manufacturing facility. The cleanup objectives for the ...
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TerraStryke ERDenhanced DNAPL Source Zone Green Remediation Optics Manufacturing Facility, Lebanon, New Hampshire - Case Study
Background: Optical manufacturer desired sustainable low-impact groundwater remediation. ERDenhanced (2,600 pounds) deployed in 2001 via direct-push technology (26 nodes) into two, silty-clay, laterally continuous, hydraulically conductive source zones. Baseline concentrations of trichloroethylene (TCE) ≈97,400 micrograms per liter (µg/L); roughly 9% solubility, indicating significant ...
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Chlorinated VOC Groundwater & Soil Remediation - Case Study
Summary Burns & McDonnell was retained to perform soil and groundwater remediation of chlorinated volatile organic compounds (VOCs) such as perchloroethylene and trichloroethylene (PCE and TCE) at a warehouse facility in Dallas. A historical spill of the chlorinated VOCs behind the warehouse building resulted in the contamination of soil in the immediate area and shallow groundwater leading ...
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Electrokinetics - Technology Overview
Electrokinetics separates and extracts contaminants from saturated or unsaturated soils, sludges and sediments, and groundwater. The goal of electrokinetic remediation is to effect the migration of subsurface contaminants in an imposed electric field via electroosmosis, electromigration and/or electrophoresis. These phenomena occur when the soil is electrically charged with a low voltage current. ...
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