scholarly journals Optimization of the Groundwater Remediation Process Using a Coupled Genetic Algorithm-Finite Difference Method

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 383
Author(s):  
S. M. Seyedpour ◽  
I. Valizadeh ◽  
P. Kirmizakis ◽  
R. Doherty ◽  
T. Ricken
Keyword(s):  
Genetic Algorithm ◽  
Analytical Solution ◽  
Groundwater Remediation ◽  
Numerical Approach ◽  
Chemical Oxidation ◽  
Decay Rate Constant ◽  
In Situ Chemical Oxidation ◽  
Multi Objective Genetic Algorithm ◽  
Remediation Process

In situ chemical oxidation using permanganate as an oxidant is a remediation technique often used to treat contaminated groundwater. In this paper, groundwater flow with a full hydraulic conductivity tensor and remediation process through in situ chemical oxidation are simulated. The numerical approach was verified with a physical sandbox experiment and analytical solution for 2D advection-diffusion with a first-order decay rate constant. The numerical results were in good agreement with the results of physical sandbox model and the analytical solution. The developed model was applied to two different studies, using multi-objective genetic algorithm to optimise remediation design. In order to reach the optimised design, three objectives considering three constraints were defined. The time to reach the desired concentration and remediation cost regarding the number of required oxidant sources in the optimised design was less than any arbitrary design.

Development of technical guidelines for the application of in-situ chemical oxidation to groundwater remediation

2014 ◽  
Vol 77 ◽  
pp. 47-55 ◽  
Author(s):  
Renato Baciocchi ◽  
Laura D'Aprile ◽  
Ivan Innocenti ◽  
Felicia Massetti ◽  
Iason Verginelli
Keyword(s):  
Groundwater Remediation ◽  
Chemical Oxidation ◽  
In Situ Chemical Oxidation

scholarly journals Case study : advanced integrated in situ technologies outperform traditional remediation techniques

2017 ◽  
Author(s):  
Kristin Forsberg
Keyword(s):  
Hydrogen Peroxide ◽  
Armed Forces ◽  
Petroleum Products ◽  
Chemical Oxidation ◽  
Full Scale ◽  
Pilot Test ◽  
In Situ Chemical Oxidation ◽  
Target Values ◽  
Remediation Process

RGS 90 has been commissioned by the Swedish Armed Forces to remediate a large fuel storage facility servicing the military. The facility housed a variety of petroleum products for over 40 years and several documented release incidents resulted in the contamination of a 50,000 m2 area. The largest known event occurred in 1958, where an explosion caused the release of 14,000 m3 of various petroleum products. During the clean-up, only 8,000 m3 of the product was recovered while an estimated 6,000 m3 reached the surrounding environment. The client initially proposed a remedial strategy consisting of biosparging and in-situ chemical oxidation using hydrogen peroxide; however, RGS 90 found these methods to be unsuitable for this site due to the geology of the area, which consists of impermeable and heterogeneous dense, rocky moraine. There are also safety risks and environmental hazards associated with the use of hydrogen peroxide. RGS 90 suggested an alternative method which was accepted by the Swedish Armed Forces and a pilot test was carried out in 2012. The results from the pilot tests confirmed that the use of ORC-Advanced and RegenOx would successfully remediate the extensive TPH contamination at the site. The data gathered from this pilot test allowed RGS 90 to refine and optimize the proposed full-scale treatment of the wider plume. The full scale remediation process started in December 2013 in area C and D. Sampling 6 month after injection shows that the target values have been achieved in almost all sampling points. During summer and autumn 2014, RGS 90 are planning for the full scale remediation process of the remaining areas, (B1-B3). The plan is to inject RegenOx and ORC-Advanced into the ground and groundwater and use multiphase extraction in the areas, where free phase product has been observed during the initial groundwater sampling.

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