To obtain a sewage treatment system which can be automatically operated while properly setting the operation condition of reducing surplus sludge according to the condition change of water quality, water quantity, water temperature, and the like with improving water quality of treated water or without deteriorating the water quality, and optimizing the driving operation amount of an oxygen supply blower.
The sewage treatment system comprises a water quality simulator 8 that calculates water quality by using an activated sludge model representing microorganism reactions in a biological reaction tank 2, a control device 9, and a data storage device 10. Easily biodegradable organic matter data of a sludge improvement device 7 are fetched into the water quality simulator 8, and the driving operation amount of the sludge improvement device 7 and the driving operation amount of the oxygen supply blower 3 for the biological reaction tank 2 are controlled from the results of water quality calculation by the water quality simulator 8.
COPYRIGHT: (C)2006,JPO&NCIPI
Kazuya Hirabayashi
Tokunaga Kazunari
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| JP2002086183A |
石川宗孝,環境浄化技術,平成16年5月1日 日本工業出版発行,Vol.3,No.5,p.1-7