A14 汚染土壌中VOCの洗浄・無害化ソノプロセス

概要

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Volatile organic compound (VOC) is one of the most common contaminants in soil and groundwater because of its toxicity and persistence. To ensure sustainable use of land and water resources, effective removal of the VOC from contaminated soil and groundwater is required. Recently, the application of sonochemical process to the degradation of chemical contaminants in solution has been explored by many workers and the significant findings have been reported. However, the exploration was mostly conducted using a lab-scale sonochemical reactor, whose volume is in the range of 50-1000mL. In order to apply the sonochemical process to the treatment of a large amount of liquid containing contaminants, it is necessary to design and develop a large-scale sonochemical reactor which can remove the contaminants from the wastewater in efficiency. We have designed and developed a large-scale treatment system for removing the VOC from a contaminant soil and liquid by ultrasonic irradiation. The large-scale treatment system includes two kinds of 100 L-scale sonochemical reactors. In our study, the sonochemical efficiency of the 100 L-scale sonochemical reactor equipped with the 500kHz transducers has been investigated by potassium iodide dosimetry and calorimetry.
日本ソノケミストリー学会の論文
2006-10-27