Organic waste disposal equipment and systems that make use of microbes' bioactivities with a feature of circulation mechanism so that wastes stored at the bottom part of a treatment tank is transferred to the upper part of its own or other tanks by lifting conveyors, and organic waste disposal equipment and systems that make use of microbes' bioactivities with a feature in its structure of having treatment tanks and lifting conveyors so that wastes stored at the bottom part of a treatment tank is transferred to the upper part of its own or other tanks by lifting conveyors.
