4. Simplified example of BAM sizing for the treatment of urban effluent

We will consider an example involving the treatment of an effluent with an average flow rate Q _i of 1,000 m ³ · j ^–1 .

In this example, sizing is based on average daily flows.

This effluent contains an average organic matter concentration of 800 mg COD/L. The aim is to discharge a maximum of 80 mg/L COD (i.e. 90% organic matter purification efficiency) and 15 mg/L TSS.

The MVS/MES ratio in raw water is considered to be close to 80%.