A comminution apparatus for comminuting waste material, such as domestic or industrial waste material, bulk objects or the like, said apparatus comprising: a supporting structure, a cutting module being arranged on the supporting structure, a top module defining a housing for receiving waste material to be comminuted and being detachably connected to the cutting module at first interface, and a drive module being arranged on the supporting structure next to the cutting module; wherein said cutting module includes: - a stationary cutting table unit which has an engagement side facing the drive module and a one or more sets of fixed counter knives which define a cutting table forming a bottom of said housing, the counter knives in each set being mutually separated by openings through the cutting table, and - one or more rotatable cutting shafts which extends in an axial direction, each shaft being provided with a set of rotating knives which partly extend down into said openings through the cutting table and which during operation of the apparatus cooperate with the counter knives for comminuting the waste material; wherein said drive module includes: - a stationary drive module body which has an engagement side facing the cutting module and which is connected to the supporting structure, and - one or more drive units which are supported by the drive module body and arranged to rotatably drive said cutting shafts; wherein the engagement side of the cutting table unit and the engagement side of the drive module body are directly and detachably interconnected at a second interface extending transversally to the axial direction between the cutting module and the drive module; and wherein the cutting shafts are detachably connected (46, 50) to the drive units. a supporting structure, a cutting module being arranged on the supporting structure, a top module defining a housing for receiving waste material to be comminuted and being detachably connected to the cutting module at first interface, and a drive module being arranged on the supporting structure next to the cutting module; wherein said cutting module includes: - a stationary cutting table unit which has an engagement side facing the drive module and a one or more sets of fixed counter knives which define a cutting table forming a bottom of said housing, the counter knives in each set being mutually separated by openings through the cutting table, and - one or more rotatable cutting shafts which extends in an axial direction, each shaft being provided with a set of rotating knives which partly extend down into said openings through the cutting table and which during operation of the apparatus cooperate with the counter knives for comminuting the waste material; - a stationary cutting table unit which has an engagement side facing the drive module and a one or more sets of fixed counter knives which define a cutting table forming a bottom of said housing, the counter knives in each set being mutually separated by openings through the cutting table, and - one or more rotatable cutting shafts which extends in an axial direction, each shaft being provided with a set of rotating knives which partly extend down into said openings through the cutting table and which during operation of the apparatus cooperate with the counter knives for comminuting the waste material; wherein said drive module includes: - a stationary drive module body which has an engagement side facing the cutting module and which is connected to the supporting structure, and - one or more drive units which are supported by the drive module body and arranged to rotatably drive said cutting shafts; - a stationary drive module body which has an engagement side facing the cutting module and which is connected to the supporting structure, and - one or more drive units which are supported by the drive module body and arranged to rotatably drive said cutting shafts; wherein the engagement side of the cutting table unit and the engagement side of the drive module body are directly and detachably interconnected at a second interface extending transversally to the axial direction between the cutting module and the drive module; and wherein the cutting shafts are detachably connected (46, 50) to the drive units.