PURPOSE: A novel microorganism in novel sphingomonas, a composition for decomposing methane or bad smell causing compound and a decomposition method of methane or compound which causes bad smell using the same are provided to effectively remove methane and bad smell at the same time and to reduce processing costs.CONSTITUTION: A composition for decomposing methane or bad smell induction compound includes MD2 strain (KCTC 11845BP) in Sphingomonas sp. The bad smell induction compound is hydrogen sulfide, methanethiol, dimethyl sulfide, benzene or toluene. The composition additionally includes soil, activated charcoal, granite soil or earthworm cast. A bio cover for decomposing methane or bad smell induction compound comprises the composition. The bio cover additionally includes an oxygen releasing agent. A biofilter for decomposing methane or the bad smell induction compound comprises the composition. The biofilter additionally includes the oxygen releasing agent. A decomposing method for methane or the bad smell induction compound comprises the following steps: and processing the composition with a source of methane or the bad smell induction compound decomposing methane or the bad smell induction compound by the composition. The decomposing system of methane or the bad smell induction composition forms a bio active layer on methane or the bad smell induction compound and decomposes thereof. The bio active layer comprises a bio cover layer in which one or more bio covers are laminated and a ventilation layer which surrounds the bio cover layer or a ventilation layer which is laminated on the lower part of the bio cover layer.COPYRIGHT KIPO 2012본 발명은 스핑고모나스 속(Sphingomonas sp.) MD2 균주(KCTC 11845BP), 상기 균주를 포함하는 메탄 또는 악취유발 화합물 분해용 조성물, 상기 조성물을 포함하는 바이오커버 또는 바이오필터, 상기 조성물을 이용한 메탄 또는 악취유발 화합물의 분해 방법 및 상기 바이오커버 또는 바이오필터를 이용한 메탄 또는 악취유발 화합물의 분해 시스템에 관한 것이다. 본 발명에 의하면 메탄뿐만 아니라, 악취도 동시에 효과적으로 제거할 수 있으므로 기존의 메탄과 악취를 개별적으로 처리하는데 소요되는 경비를 절감하고, 매립지 등의 메탄 및 악취성분을 동시에 효과적으로 분해할 수
