1. Fully coupled activated sludge model (FCASM): Model development
- Author
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Sun, Peide, Wang, Ruyi, and Fang, Zhiguo
- Subjects
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ACTIVATED sludge process , *MATHEMATICAL models , *WASTEWATER treatment , *INDUSTRIAL microorganisms , *NITROGEN removal (Water purification) , *NITRIFYING bacteria , *POLYPHOSPHATES , *GLYCOGEN , *GLYCOLYSIS - Abstract
Abstract: A sub-microscopic mechanism model named Fully Coupled Activated Sludge Model (FCASM) about biological nutrient removal in the wastewater treatment process was developed in the present study. The functional organisms existing simultaneously in the activated sludge system were separated into eight groups, including aerobic heterotrophic organisms, nitrite reducing organisms, nitrate reducing organisms, ammonium oxidizing autotrophs, nitrite oxidizing autotrophs, non-denitrifying phosphorus-accumulating organisms (PAOs), denitrifying phosphorus-accumulating bacteria (DPB), and glycogen-accumulating organisms (GAOs). In FCASM, the interaction relationships of the eight functional microorganisms were taken fully into account. FCASM could model biological nitrogen removal via nitrite by splitting nitrification process and denitrification process into two-step reactions, and the autotrophs and denitrifying organisms were divided into two groups, respectively. What’s important, FCASM included the anaerobic maintenance processes of sequential utilization of polyphosphate followed by glycogen for PAOs and DPB and glycolysis of the intracellular stored glycogen for GAOs. [Copyright &y& Elsevier]
- Published
- 2009
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