| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wastewater treatment method capable of surely preventing purification treatment from becoming unstable by fluctuations in the biological load to the microbial treatment of an organic wastewater. <P>SOLUTION: The concentration of the BOD (biological oxygen demand) of wastewater before flowing in a raw water conditioning tank (10) is measured by an absorbance sensor (60) and the wastewater is supplied to a system (40) different from the raw water conditioning tank when the concentration of the BOD of wastewater exceeds a set value. The flow rate of the wastewater before flowing in the raw water conditioning tank is measured by a flow rate sensor (61) while the magnitute of biological load is calculated from the flow rate and BOD concentration of the wastewater and the wastewater may be supplied to the system different from the raw water conditioning tank when the biological load exceeds a set value. <P>COPYRIGHT: (C)2004,JPO</p> |
