The odor removal of landfill site leachate was carried out using pyroligenous liquid. The constituent elements of pyroligenous liquid and leachate were also analysed, employing Atomic Absorption Spectroscopy(AAS). Before order removal, the heavy metal ions such as Pb, Zn, Cu, Mn, Fe and Ni, in pyroligenous liquid were detected with ultra trace level. However, in this liquid, other metal ions such as As, Hg and Cd were not observed. The optimum condition for removing odor from the leachate was observed in 15 times dilution of pyroligenous liquid. Also, the degree of outlet odor was 1. Furthermore, the concentration of odor constituent compounds, e.g. H2S, NH3, NH2 and CO2 in the leachate was remarkably reduced. Finally, water quality of the leachate was improved,

대청호 원수를 취수하여 정수하는 대청수도에서 이취미를 제거하고 THM(Trihalomethanes) 발생량을 줄이기 위하여 기존 표준정수공정에 오존과 활성탄여과공정을 추가한 pilot plant 실험을 수행하였다. pilot 실험결과 표준정수공정에서 DOC(dissolved organic carbon)는 약 25% 제거되었으나, 오존공정에서는 거의 제거되지 않았고, 30일이 지난 후 GAC(granular activated carbon)에서는 약 75%