MICROBIAL REACTION TANK AND WASTEWATER TREATMENT METHOD

摘要

Provided is a microbial reaction tank which enables continuous anaerobic/aerobic microbial treatment to be carried out even if the reaction tank has a large capacity, and which enables construction costs to be controlled. Also provided is a wastewater treatment method using the tank. The reaction tank is equipped with: an outer tank (2); a cylindrical inner tank (3) which is arranged inside the outer tank and which has opening sections in the top and bottom thereof; a circulation rate control device (4) which is provided on the cylindrical inner tank, and which controls the in-tank circulation rate of water to be treated; a cylindrical control plate (5) which is provided to the upper periphery of the cylindrical inner tank and which causes sludge to settle; a device (6) for measuring the quality of the water to be treated, said device being provided on the outside and the inside of the cylindrical inner tank; a raw water supply port (10) provided in the circulation path of the water to be treated which circulates inside the inner tank and the outer tank; and a treated water discharge port (11) which is provided to the upper part of the outer tank.