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영어

This study was carried out to assess nitrate and phospate removal using mixed culture of methanotrophs. The methanotrophs ware isolated from the soil of landfill cover layer and cultured in nitrate minimal salt medium with oxigen and methane supply as a carbon and energy sources. During the growth of methanotrophs in high concentration of nitrate and phospate, 44.1% of nitrate and 50% of phospate were removed in 62 hrs. The utilization rate of methane and oxygen was slightly increased corresponding to rising initial MLVSS concentration. Nitrate removal rate of methanotrophs was decreased to 40% in 64 hrs at the addition of ammonia.