| 摘要 |
<p>PURPOSE:To calculate the COD quantity discharged per a day by treated water using a flowmeter detecting the inflow amt. of raw water and without using a flowmeter detecting the discharge amt. of treated water in a waste water treatment apparatus purifying inflow raw water by a purifying device to discharge the same as treated water. CONSTITUTION:To a waste water treatment apparatus wherein inflow raw water to be purified is pumped by underwater pumps P2, P3 to introduce into a weighting tank and supplied to a purifying device 10 from the weighing tank while purified treated water is discharged, an inflow side flowmeter F1, operation time meters 11 detecting the operation times per a day of the underwater pumps P2, P3 pumping up the raw water to the weighing tank, a COD measuring device C measuring the COD value of the discharged treated water and an operator 14 operating the COD discharge quantity per a day of the treated water on the basis of the outputs of the pump operation time meters and the COD measuring device are provided.</p> |
