Basic protocol of BM respirometry measurements and applications for activated sludge process management and energy optimization

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Courtesy of SURCIS, S.L.

Introduction

The use of the BM advanced respirometry system enables the user to get the precise calculation of the operating parameters and limit set points that any activated sludge actually needs within the framework of an energy optimization. For that reason, the proper use of this respirometry is more than justified; and not only because of getting the parameters for a good process performance, but also to keep a healthy biomass and prevent possible potential problems.

However, because of the wide range of applications and possibilities that BM respirometry can offer, it is critical to get a protocol that can be adapted to any specific process and carried out by the plant operator within his available timeframe.

For this protocol here explained we can use any of the BM respirometers, but in case the pH could play a critical role in its performance, it would be recommended the model BM-Advance which includes an automatic pH monitoring and control system.

The BM respirometer can be programmed with three different operation modes (OUR, Cyclic OUR and R) and can be set for different conditions of DO, Temperature, pH, sample volumes. Those conditions can be changed during the test performance. All simultaneous measurements can be displayed on tabular or graphic mode during the test and respirogramas can be overlaid. The R test, since we can use small amount of wastewater sample, the tests can be run in very short term.

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