AIR DIFFUSER FOR INSTALLATION OF SEPTIC TANK AND SEPTIC TANK USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an air diffuser for installation to a septic tank which prevents the degradation in the life and aeration ability of an air pump and facilitates maintenance work and a septic tank using the same. SOLUTION: The air diffuser for installation to the septic tank for sending air to an aerobic tank for carrying out an aerobic treatment has a manhole cap attachable and detachable to and from a manhole port of the septic tank and the air pump. The manhole cap has a housing recessed part for housing the air pump and a sealing cap to be attachably and detachably installed in an aperture of the housing recessed part in order to seal the aperture. The housing recessed part is communicated with the outside in such a manner that the air pump can inhale the external air exclusive of the air within the septic tank such that the air discharged from an air exist of the air pump is sent to an air feed pipe arranged within the septic tank.