Optimizing the Step-Feed Ratio and Modeling the Effluents of Aerobic Tank with ASM1 in ECOSUNIDE Process

Ruo Gu Li; Yan Qiu Zhang

doi:10.4028/www.scientific.net/AMM.178-181.526

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 178-181Optimizing the Step-Feed Ratio and Modeling the...

Optimizing the Step-Feed Ratio and Modeling the Effluents of Aerobic Tank with ASM1 in ECOSUNIDE Process

Abstract:

The step feed model based on the Activated Sludge Model No.1 (ASM1) and the optimum model of the ammonia nitrogen (S_NH) removal in wastewater were established. Four aeration tanks under the different step feed ratios were simulated by Matlab Simulink. The results show that single-feeding is conducive to the removal of readily biodegradable substrate (S_S) and the growth of heterotrophic organisms (X_BH), and to lower the biodegradable substrate (X_S) at the same time. The S_S, X_S, and S_NH concentrations are 1.36, 5.98, and 3.02 mg/L respectively in effluent. However, the step-feeding is conducive to the S_NH removal, and the autotrophic bacteria (X_BA) growth. Under the step feed ratio (25/25/25/25%), the S_S, X_S, and S_NH concentrations are 2.64, 10.79, and 2.61 mg/L respectively. Under the optimum ratio (28.7/23.6/20.4/27.2%), step-feeding could further facilitate the removal of S_NH and hinder the removal of organic matter, their concentrations are 2.70, 10.98, and 2.47 mg/L respectively.

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Periodical:

Applied Mechanics and Materials (Volumes 178-181)

Pages:

526-530

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.178-181.526

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Online since:

May 2012

Authors:

Ruo Gu Li, Yan Qiu Zhang

Keywords:

ASM1, Optimization, Simulation, Step Feed

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