A method of collecting and managing waste that is deposited in waste disposal packages (6-F 1, 6-F 2, 6-F 3...6-F n), and that is received in a vacuum operated waste collection system (1; 1') of a stationary type or a mobile type, in which waste is intermittently conveyed from at least one waste inlet (2; 102), through waste transport piping (3; 3'; 103) and to a waste collection container (5; 5') for storing waste before removal, whereby waste disposal packages each containing only one of multiple waste fractions (F 1, F 2, F 3...F n) are received through said at least one waste inlet being common for the disposal packages, waste disposal packages are provided with information readable by information reading means, each received waste disposal package is identified by comparing read waste fraction information (7-F 1, 7-F 2, 7-F 3...7-F n) provided thereon and being unique for each fraction, with stored waste fraction data and blocking and allowing, respectively, access to a waste inlet opening of the at least one waste inlet based on said waste fraction information by controlling release and activation of an inlet door lock (16; 116) of an inlet door (2B; 102B), characterized in that: - subsequent to said identification the identified waste disposal packages are compared with a preset fraction time schedule for matching the waste fraction information of the packages to predetermined fraction time schedule time periods (P 1-n) that belong to the respective fraction, access to the inlet opening of the waste inlet is allowed for each identified package during the predetermined fraction time schedule time periods (P 1-n) that belong to the respective fraction and access to the waste inlet for each identified package is blocked at all other times, - deposited waste packages containing one fraction (F 1, F 2, F 3...F n) are temporarily stored in a temporary storage space above a discharge valve controlling communication between the waste inlet and the transport piping during a predetermined fraction access time period (P 1-n) of said fraction in the preset fraction time schedule belonging to the respective fraction; - at fixed or controlled intervals during said time period waste packages containing this fraction are conveyed to a waste collection container (5 or 5') in a collection terminal in a stationary type system or in a vacuum truck in a mobile type system, said container being common for all fractions; - and in that the common container is emptied between each two successive fraction time periods in the time schedule in the stationary type system and after finishing collecting waste from said at least one waste inlet in the mobile type system. - subsequent to said identification the identified waste disposal packages are compared with a preset fraction time schedule for matching the waste fraction information of the packages to predetermined fraction time schedule time periods (P 1-n) that belong to the respective fraction, access to the inlet opening of the waste inlet is allowed for each identified package during the predetermined fraction time schedule time periods (P 1-n) that belong to the respective fraction and access to the waste inlet for each identified package is blocked at all other times, - deposited waste packages containing one fraction (F 1, F 2, F 3...F n) are temporarily stored in a temporary storage space above a discharge valve controlling communication between the waste inlet and the transport piping during a predetermined fraction access time period (P 1-n) of said fraction in the preset fraction time schedule belonging to the respective fraction; - at fixed or controlled intervals during said time period waste packages containing this fraction are conveyed to a waste collection container (5 or 5') in a collection terminal in a stationary type system or in a vacuum truck in a mobile type system, said container being common for all fractions; - and in that the common container is emptied between each two successive fraction time periods in the time schedule in the stationary type system and after finishing collecting waste from said at least one waste inlet in the mobile type system.