| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sewage treatment system in which sewage treatment can be controlled while considering an inflow of sewage and the quality of sewage as factors of the load fluctuation of sewage. <P>SOLUTION: The sewage treatment system 10 is provided with: a biological reaction tank 12; an air diffuser 16 arranged in the biological reaction tank 12; and an aerator 15 connected to the air diffuser 16. An ammonia meter 45 is arranged in the biological reaction tank 12 and a flowmeter 35 is arranged at an inlet of the biological reaction tank 12. The amount of aeration air is calculated in an aeration air amount calculating part 41 of a controller 40 on the basis of a signal from the flowmeter 35. A correction coefficient is calculated in a correction coefficient calculating part 42 according to a measured value from the ammonia meter 45 and the amount of aeration air calculated in the aeration air amount calculating part 41 is corrected by using the calculated correction coefficient. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
