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Open AccessArticle

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

1
Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
2
Bonavista Energy Corporation (formerly), 525 8 Ave SW Suite 1500, Calgary, AB T2P 1G1, Canada
*
Author to whom correspondence should be addressed.
Water 2020, 12(4), 1200; https://doi.org/10.3390/w12041200
Received: 3 April 2020 / Revised: 21 April 2020 / Accepted: 21 April 2020 / Published: 23 April 2020
(This article belongs to the Section Wastewater Treatment and Reuse)
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 m3 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. View Full-Text
Keywords: sulfolane; groundwater; pilot-scale; UV; hydrogen peroxide sulfolane; groundwater; pilot-scale; UV; hydrogen peroxide
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MDPI and ACS Style

Yu, L.; Iranmanesh, S.; Keir, I.; Achari, G. A Field Pilot Study on Treating Groundwater Contaminated with Sulfolane Using UV/H2O2. Water 2020, 12, 1200.

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