NOVELTY - A composting system comprises stationary, horizontal, cylindrical or largely cylindrical chamber, rotating auger shaft centrally mounted within chamber with discrete transfer arms fitted to auger shaft, where the auger shaft is rotatable in either direction, external motor/gearbox arrangement which rotates the auger shaft, discrete sensor modules for monitoring environmental conditions within chamber, blower system for drawing air through the chamber, drainage system for removing liquid from chamber and microprocessor based device for controlling overall operation of composting system.    USE - As composting system (claimed), for the onsite processing of organic waste into landscaping material and soil conditioner.    ADVANTAGE - The composting system integrates a maceration system within the composter and thus increases the processing capability of the machine and allows a wider variety of waste such as compostable packaging to be processed. The system is a stationary, horizontal, cylindrical aerobic composter with a centrally mounted internal auger.    DETAILED DESCRIPTION - A composting system comprises a stationary, horizontal, cylindrical or largely cylindrical chamber, with an inlet at one end and an outlet at the other end, a rotating auger shaft centrally mounted within the chamber with discrete transfer arms fitted to the auger shaft, where the auger shaft is rotatable in either direction, an external motor/gearbox arrangement which rotates the auger shaft, discrete sensor modules for monitoring environmental conditions within the chamber, a blower system for drawing air through the chamber, a drainage system for removing liquid from the chamber and a microprocessor based device for controlling the overall operation of the composting system and recording environmental conditions within the chamber, where aeration, agitation and transfer of the composting matter through the chamber is performed by the transfer arms, the transfer arms featuring a paddle shaped blade where the pitch of the blade can be adjusted to change the rate of transfer, with an additional set of maceration arms attached to the auger shaft to increase the maceration and dewatering rate of composting material in the chamber.