Article | REF: W4140 V1

Membrane bioreactors (MBRs)and wastewater treatment

Authors: Alain GRASMICK, Corinne CABASSUD, Mathieu SPERANDIO, Christelle WISNIEWSKI

Publication date: August 10, 2007

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

Example

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%.

Since only the organic and particulate fractions need to be removed, only one aerobic biological reactor is required, combined with a membrane separation stage....

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Simplified example of BAM sizing for the treatment of urban effluent