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.
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.
COPYRIGHT: (C)2007,JPO&INPIT
TSUTSUMI MASAHIKO
YAMANAKA OSAMU
NAGAIWA AKIHIRO
HATSUKA YUKIO
KISHIHARA MASAKI
| JPH05261361A | 1993-10-12 | |||
| JP2000107744A | 2000-04-18 | |||
| JPH01189397A | 1989-07-28 | |||
| JPH11244894A | 1999-09-14 | |||
| JPH07253427A | 1995-10-03 | |||
| JPH02194897A | 1990-08-01 | |||
| JPH04326992A | 1992-11-16 | |||
| JPH10286585A | 1998-10-27 | |||
| JPH11169866A | 1999-06-29 | |||
| JPH11169887A | 1999-06-29 | |||
| JPH11169885A | 1999-06-29 | |||
| JPH1157780A | 1999-03-02 | |||
| JPH10235333A | 1998-09-08 | |||
| JPH0852458A | 1996-02-27 | |||
| JP2000107796A | 2000-04-18 | |||
| JPS62180796A | 1987-08-08 | |||
| JPH04256498A | 1992-09-11 | |||
| JPH04367795A | 1992-12-21 | |||
| JPH05123689A | 1993-05-21 | |||
| JPH03114597A | 1991-05-15 |
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
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