A foundry makes various machinery parts made by iron. For manufacturing machinery parts, they usuallyuses wooden mold with molding sand and pour the molten iron into wooden mold through inlet. A foundry have manyprocesses including Furan process, In Furan process workers prepares a wooden mold in the molding sand. So they fixeswooden mold in sand housing and then they fill the molding sand in the sand housing. Molding sand should be stickyenough to sustain the shape of wooden mold, so several materials are needed to prepare the suitable molding sand. Thefirst step of Furan process is making the molding sand with molding sand and Voltaic Organic Compounds (VOC) andthe second step of Furan process is pour the molding sand into the wooden molding housing. This two step of processgenerated noxious VOC and various size of dust. So the process is very dirty and dangerous one. Because of these,Workers frequently shrink out of the plant. The company related with foundry usually faced on the difficult situation forengagement and always have shortage of hiring problem. Through this study, we developed a system which removestoxic VOC and dust simultaneously. We design and construct real system and install it at real plant. Before setting upthis system, the working surroundings VOC (for formaldehyde) 15ppm and Dust(for PM10) 8,000μg/m3. After settingup this system, working surroundings is improved by VOC (for formaldehyde) 0 ppm, Dust(for PM10) 4μg/m3, and thework evasion factor is removed. So we contribute to solve hiring problem of this company and increasing the produc-tivity also.