Electrochemical Remediation of Contaminated Groundwater: Pilot Scale Study

This paper reviews ten years of research on on-site and in situ bioremediation of chlorophenol contaminated groundwater. Laboratory experiments on the development of a high-rate, fluidized-bed process resulted in a full-scale, pump-and-treat application which has operated for several years. The system operates at ambient groundwater temperature of 7 to 9°C at 2.7 d hydraulic retention time and chlorophenol removal efficiencies of 98.5 to 99.9%. The microbial ecology studies of the contaminated aquifer revealed a diverse chlorophenol-degrading community. In situ biodegradation of chlorophenols is controlled by oxygen availability, only. Laboratory and pilot-scale experiments showed the potential for in situ aquifer bioremediation with iron oxidation and precipitation as a potential problem.

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Phytoremediation of slightly brackish, polycyclic aromatic hydrocarbon‐contaminated groundwater from 250 ft below land surface: A pilot‐scale study using salt‐tolerant, endophyte‐enhanced hybrid poplar trees at a Superfund site in the Central Valley of California, April‒November 2019

Remediation Journal ◽

10.1002/rem.21664 ◽

2020 ◽

Vol 31 (1) ◽

pp. 73-89

Author(s):

James E. Landmeyer ◽

Steven Rock ◽

John L. Freeman ◽

Greg Nagle ◽

Mark Samolis ◽

...

Keyword(s):

Polycyclic Aromatic Hydrocarbon ◽

Land Surface ◽

Hybrid Poplar ◽

Central Valley ◽

Pilot Scale ◽

Contaminated Groundwater ◽

Superfund Site ◽

Salt Tolerant ◽

Poplar Trees ◽

Polycyclic Aromatic

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Pilot-Scale Biological Treatment of Contaminated Groundwater at an Abandoned Wood Treatment Plant

Environmental Biotechnology ◽

10.1007/978-1-4899-0824-7_37 ◽

1988 ◽

pp. 445-446

Author(s):

Lena Blais

Keyword(s):

Biological Treatment ◽

Treatment Plant ◽

Pilot Scale ◽

Contaminated Groundwater ◽

Wood Treatment

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Application of in situ chemical oxidation to remediate sulfolane-contaminated groundwater: batch and pilot-scale studies

10.5004/dwt.2021.27110 ◽

2021 ◽

Vol 223 ◽

pp. 136-145

Author(s):

Zong-Han Yang ◽

Ya-Lei Chen ◽

Francis Verpoort ◽

Cheng-Di Dong ◽

Chiu-Wen Chen ◽

...

Keyword(s):

Pilot Scale ◽

Chemical Oxidation ◽

Contaminated Groundwater ◽

In Situ Chemical Oxidation

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A Field Pilot Study on Treating Groundwater Contaminated with Sulfolane Using UV/H2O2

Water ◽

10.3390/w12041200 ◽

2020 ◽

Vol 12 (4) ◽

pp. 1200 ◽

Cited By ~ 1

Author(s):

Linlong Yu ◽

Sobhan Iranmanesh ◽

Ian Keir ◽

Gopal Achari

Keyword(s):

Water Flow ◽

Cost Model ◽

Electrical Energy ◽

Pilot Scale ◽

Process Efficiency ◽

Contaminated Groundwater ◽

Operational Parameters ◽

Flow Rates ◽

Electrical Energy Per Order ◽

H2o2 System

Sulfolane is an emerging contaminant in the groundwater and soil nearby gas plants, which has attracted much attention from many researchers and regulatory agencies in the past ten years. In this paper, a field pilot-scale ultraviolet (UV)/hydrogen peroxide (H2O2) system was investigated for treating sulfolane contaminated groundwater. Different groundwater, as well as different operational parameters such as influent sulfolane concentration, H2O2 dosage, and water flow rates, were studied. The results showed that a pilot-scale UV/H2O2 system can successfully treat sulfolane contaminated groundwater in the field, although the presence of iron and other groundwater limited the process efficiency. The lowest electrical energy per order of reduction for treating sulfolane in groundwater by using the pilot-scale UV/H2O2 system was 1.4 kWh m−3 order−1. The investigated sulfolane initial concentrations and the water flow rates did not impact the sulfolane degradation. The enhancement of sulfolane degradation in an open reservoir by adding ozone was not observed in this study. Furthermore, an operational cost model was formulated to optimize the dosage of H2O2, and a stepwise procedure was developed to determine the power necessary of the UV unit.

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Pilot-Scale Performance of Iron and Arsenic Removal from Contaminated Groundwater

Water Quality Research Journal ◽

10.2166/wqrj.2005.007 ◽

2005 ◽

Vol 40 (1) ◽

pp. 82-90 ◽

Cited By ~ 8

Author(s):

Biswaranjan Manna ◽

Uday Chand Ghosh

Keyword(s):

Arsenic Removal ◽

Cost Effective ◽

Pilot Scale ◽

Cost Evaluation ◽

Contaminated Groundwater ◽

Arsenic Content ◽

Hand Pump ◽

Excess Iron ◽

Tube Wells ◽

Performance Results

Abstract Pilot-scale performance in reducing excess iron and arsenic from contaminated groundwater has been systematically reported. Here, a double column unit, the first packed with β-MnO2 and the second with crystalline FeOOH (goethite variety), with filters attached to the outlet of hand-pump tube-wells has been used in the field. Results showed that the filters generate 10,000 to 15,000 BV and 19,000 to 35,000 BV water with iron ≤ 0.3 mg/L and arsenic ≤10 µg/L from groundwater having influent iron and arsenic levels of 3.75 to 7.25 mg/L and 70 to 220 µg/L, respectively. The downflow rate of effluent water was 237.6 to 305.5 L/m2-min. The performance results were achieved with a single charging of the iron and arsenic removal media. Toxicity characteristic leaching procedure (TCLP) tests of the waste (arsenic content: 2.4 g/kg) showed that it is not hazardous to the environment and does not pose any risk to users. Cost evaluation showed $US0.50 to 0.70 per 1000 gallons of treated water and, hence, the technology is cost-effective for countries such as India and Bangladesh.

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