NOVELTY - Processor comprises an oxygen dissolving machine (1) for dissolving oxygen in the wastewater internally, connected to oxygen supply and wastewater inlet line, a wastewater treating tank (8) for oxygen dissolved wastewater, connected to the oxygen dissolving machine, and a dewatering crusher (9) for dewatering treated water and crushing compost. The oxygen dissolving machine comprises a casing for introducing wastewater and oxygen on one side and discharging oxygen dissolved water on other side, a plate for partitioning at least one vortex chamber, a floating ball, and an induction pipe.    USE - The processor is useful for odor-free composting of livestock wastewater (claimed).    ADVANTAGE - The processor suppresses growth of anaerobic microorganisms by dissolving oxygen in wastewater pigsty, stables and poultries, and performs composting of livestock wastewater in simple manner.    DETAILED DESCRIPTION - Processor comprises an oxygen dissolving machine (1) for dissolving oxygen in the wastewater internally, connected to oxygen supply and wastewater inlet line, a wastewater treating tank (8) for oxygen dissolved wastewater, connected to the oxygen dissolving machine, and a dewatering crusher (9) for dewatering treated water and crushing compost, connected to the wastewater treating tank. The oxygen dissolving machine comprises a casing for introducing wastewater and oxygen on one side and discharging oxygen dissolved water on other side, a plate for partitioning at least one vortex chamber inside the casing at top and bottom, a floating ball communicating with top and bottom vortex chambers formed on border of the plate, and an induction pipe with a jaw part mounted on the floating ball and a correlation part bent in circumferential direction of the plate for flowing a fluid introduced into the bottom vortex chamber to the upper vortex chamber and back to the jaw part. The floating ball of the upper plate and floating ball of the lower plate are respectively formed at position spaced apart based on top and bottom vertical lines for introducing the fluid discharged from the induction pipe of the lower plate into the floating ball of the upper plate at less than 360 degrees in fluid rotation direction.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the processor for odor-free composting of livestock wastewater.    Wastewater inlet line (l1)    Oxygen dissolved water discharge line (l2)    Oxygen dissolving machine (1)    Wastewater treating tank (8)    Dewatering crusher (9)