A drying apparatus, particularly suitable for disposing water-containing organic waste. The drying apparatus includes a drying chamber with a circular cross-section, where waste enters the drying chamber through a waste inlet and undergoes rotational movement within the drying chamber due to a negative pressure generated by an air pump. The air pump draws out airflow from the drying chamber through an air duct connected to the flow outlet, ensuring that the waste continues to rotate during the drying process. Additionally, the apparatus is equipped with a microwave generating device, which directs microwaves into the drying chamber either directly or via a microwave conduit to efficiently dry the waste. This design combines the cyclonic motion with microwave heating, significantly enhancing drying efficiency and ensuring that the waste is fully dried in a short time, making it particularly suitable for disposing organic residue that requires rapid drying.

Food waste disposers include a housing, a grinding apparatus mounted inside the housing and configured to grind food waste, and a storage device arranged to store ground food waste. The grinding apparatus includes a grinding case including a discharge hole to allow ground food waste to be transferred to the storage device, a stationary grinder including a plurality of stationary blades coupled to a side wall of the grinding case, a rotary body rotatably coupled to a bottom surface of the grinding case, a first blade extending from the rotary body, the first blade having a first member on a front side and a second member on a rear side with a different shape from each other, and a second blade extending from the rotary body, the second blade having a shape different from a shape of the first blade.

Provided is a processing apparatus for processing water-containing organic matters. The processing apparatus includes: a processing tank configured to store the water-containing organic matters; a stirring unit configured to stir the water-containing organic matters; a heater configured to heat the processing tank; an exhaust unit configured to exhaust gas from the processing tank at a rate from 1 m.sup.3/min to 300 m.sup.3/min; and an ion gas supply unit configured to supply ion gas into the processing tank with the exhaustion of the gas from the interior of the processing tank, the ion gas having an ion density of at least 2,000,000 pcs/cc, wherein the heater heats an interior of the processing tank while the stirring unit stirs the water-containing organic matters, and the ion gas is supplied into the processing tank according to the exhaustion by the exhaust unit, whereby processing the water-containing organic matters.

A food waste disposer includes: a housing; a grinding case positioned inside the housing and configured to be separable from inside of the housing to outside of the housing and treat food waste; a rotating grinder configured to treat the food waste by rotating inside the grinding case and rotatably coupled with respect to a bottom surface of the grinding case; a grinder rotating shaft inserted in the rotating grinder and configured to rotate together with the rotating grinder; and a driver positioned below the grinding case and configured to provide rotation power of the rotating grinder, wherein the driver includes: a driving motor configured to generate power; a shaft driving gear configured to rotate by receiving power of the driving motor; and a connecting shaft configured to be rotatable within a range of a first angle with respect to the shaft driving gear, wherein one end of the connecting shaft is inserted in the grinder rotating shaft and another end of the connecting shaft is inserted in the shaft driving gear to transfer power from the shaft driving gear to the grinder rotating shaft.