Little oxygen - short distance denitrification oxidation ditch

The utility model discloses a little oxygen short distance denitrification oxidation ditch, including intake pool, aeration tank, air -blower, oxidation ditch and mud -water separation pond, the oxidation ditch includes aerobic reaction district and hypoxia response district, the one end in hypoxia response district with the aerobic reaction district is U font intercommunication, the other end inhypoxia response district with the mud -water separation pond communicates each other, hypoxia response keeps away from in the district the one end intercommunication in aerobic reaction district theintake pool, the intake pool with communicate each other through being provided with the bottom of the pool opening between the aeration tank, the aeration tank with the aerobic reaction district backs down a mouthful mutual intercommunication through being provided with the pond, the aeration tank bottom is provided with little oxygen aeration equipment, little oxygen aeration equipment with blower connection, the gas out