Compost, Peatmoss, GAC의 복합 메디아로 충전된Biofilter의 Toluene 제어특성에 관한 실험적 연구 = An Experimental Study on the Toluene Control Characteristicsof Biofilter Packed with Compost, Peatmoss and GAC

다국어 초록 (Multilingual Abstract)

The primary objective of this study is to investigate the effect of media on the performance of biolters. Twotypes of experiments were carried out in this study. The rst type of experiment used a biolter with the mediacomposed of three different packing materials of compost, peatmoss and GAC(granular activated carbon), whereasthe second type used a biolter with the media composed of compost only. It was found from the two experiments that the biolter composed of compost, peatmoss and GAC showed betterperformance than the one composed of compost only with the higher toluene removal efciency, lower pressuredrop, and more uniform media moisture content. In particular, no appreciable media compression occurred for thebiolter composed of compost, peatmoss and GAC, whereas signicant media compression took place in the biol-ter composed of compost only. As suggested by the other researchers, it is likely that GAC may be responsible forthe higher toluene removal efciency in the case of the biolter composed of mixed media especially for the earlystage of bioltration due to its adsorption capability of toluene of such high concentration as 300ppm. It was alsoregarded that GAC may play a major role in maintaining lower media pressure drop in the case of the mixed mediathan the media with compost only because of its mechanical strength resisting to the compression. Nonetheless,further rened experiments may need to draw more accurate conclusion. The results of the additional test run using the same mixed media showed that the biolter system using themixed media can be consistently operated for more than 100 days very stably despite sudden change in operatingconditions of temperature and ow rate.

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