Treatment of low strength sewage with high suspended organic matter content in an anaerobic sequencing batch reactor and modeling application
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Keywords

acidogenesis
anaerobic treatment
hydrolysis
low strength wastewater
modeling

How to Cite

1.
Donoso-Bravo A, Carballa M, Filippi GR, Chamy R. Treatment of low strength sewage with high suspended organic matter content in an anaerobic sequencing batch reactor and modeling application. Electron. J. Biotechnol. [Internet]. 2009 Jul. 15 [cited 2024 Dec. 4];12(3):0-. Available from: https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v12n3-15

Abstract

In this work, an anaerobic sequencing batch reactor (ASBR) was operated for 8 months to treat low strength sewage with high suspended organic matter content. Three phases of operation with increasing organic loading rates (OLR) were performed: 0.4 kg COD/m3 x d (phase I), 0 .8 kg COD/m3 x d (phase II) and 1.2 kg COD/m3 x d (phase III). Adequate stability parameters (pH, total alkalinity) were obtained through all three experimental phases. During phases I and II, the removal efficiencies of organic matter (expressed as total chemical oxygen demand (COD) and total suspended solids ranged between 50-60%. However, these values decreased to 15-25% in phase III. In addition, a non-complex model, including hydrolysis, acidogenesis and methanogenesis, was applied to predict the reactor behavior.

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