| Summary: | 碩士 === 輔英科技大學 === 環境工程與科學系碩士班 === 104 === This research adopted the In-Situ Chemical Oxidation, In-Situ Groundwater Bioremediation, Air Sparging and Soil Vapor Extraction to perform the mode field simulation test for leak sites of oil grooves from a gas station after the status of site survey. My study continuously renovated the field according to the status of site investigation and the preliminary result of simulation test, I also discussed the effect in the end after monitoring the Soil Gas and analyzing the pollutants concentration of BTEX and MTBE in the improvement period.
After the time interval of location monitor process from September, 2014 to April, 2015, we immediately analyzed the concentration of pollutants and the effect of improvement. The results reveal that four methods could effectively remediated as well in this study, the improvement effect of In-Situ Chemical Oxidation decreased the concentration of benzene by monitoring from 0.334 ppm to 0.016 ppm and the removal efficiency reached 95.2%, the improvement effect of In-Situ Groundwater Bioremediation decreased the concentration of benzene by monitoring from 0.300 ppm to 0.017 ppm and the removal efficiency reached 94.3%, the improvement effects of Air Sparging and Soil Vapor Extraction decreased the concentration by monitoring from 16,900 ppm and 4,580 ppm to 49 ppm and 930 ppm, respectively.
Setup problems in Soil Vapor Extraction method can be overcome with changes of method. Both the methods of In-Situ Chemical Oxidation and In-Situ Groundwater Bioremediation can achieve effectiveness by injection system of Air Sparging. It is extremely effective to reducing the time of improvement for the leak sites of oil grooves by several methods in the same time.
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