| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a reaction tank for aerobic-anaerobic use in which a turning flow can be spread over the whole region in the tank, and the partial settling deposition of sludge on the inside of the tank can be prevented, and a method for driving the same.SOLUTION: Provided is a reaction tank for aerobic-anaerobic use comprising: an upward flow generating device 21 located at the upper part of the inside of the tank and generating the upward flow of the liquid to be treated; an air diffusing device 22 located at the bottom part in the tank and diffusing air into the liquid to be treated; and circulation passages 41, 42 formed between the air diffusing device 22 and the bottom face of the tank and between the air diffusing device 22 and the inside face of the tank wall, and the air diffusing device 22 has a plurality of air diffusing parts 22a, and the space between the air diffusing parts 22a is provided with a liquid passing part 22b through which the liquid to be treated can pass to the upper part.</p> |
