PURPOSE: To stably use a sewage treating device for a long period by positioning the air blowoff port of an air feed pipe in the sewage in a treating tank, blowing air from a blower to agitate the sewage and to supply oxygen and decomposing the dirt by the action of aerobic bacteria and a chemical reaction.
CONSTITUTION: A first air feed pipe 5 is fitted in an agitated tank 1, a first feed pipe 6 having an air blowoff port is positioned at the inner bottom of the agitated tank 1, and air is supplied through a first blower 7. Similarly, a second feed pipe 14 is furnished in a treating tank 9, and air is supplied from a second blower 15. Consequently, the agitated tank 1 and treating tank 9 are supplied with air, agitated and consequently supplied with oxygen, the dirt is decomposed by the action of aerobic bacteria and a chemical reaction, and the device is stably used for a long period without the water being dipped up or discharged.
NISHIMURA YOSHINOBU
TOYOOKA KENJI
TAKIMOTO TAKEHIKO
