<;P>;PROBLEM TO BE SOLVED: To provide a sewage purification apparatus which can realize satisfactory lipolysis and deodorization by using microorganisms and ozone. <;P>;SOLUTION: This sewage purification apparatus is used for purifying a sewage 3 in a grease trap 2. The sewage purification apparatus comprises a tank 5 for storing a bioliquid 4 containing microorganisms having lipase which can degrade oil matter, a bioliquid supply apparatus 13 for supplying the bioliquid 4 into the grease trap 2, a carbon fiber 23 provided, within the sewage 3, for depositing the microorganisms thereon, an ozone generator 8 for generating ozone, an ozone supply apparatus 21 for supplying ozone generated in the ozone generator 8 into an upper gas phase in the grease trap 2, and a control unit 22 for controlling the supply of the bioliquid from the bioliquid supply apparatus. <;P>;COPYRIGHT: (C)2009,JPO&INPIT