Modeling a Granule-Based Anaerobic Ammonium Oxidizing (ANAMMOX) Process

作者：Ni Bing Jie; Chen You Peng; Liu Shao Yang; Fang Fang; Xie Wen Ming; Yu Han Qing^*

来源：Biotechnology and Bioengineering, 2009, 103(3): 490-499.

DOI：10.1002/bit.22279

• anaerobic ammonium oxidation (ANAMMOX)
• calibration
• granule
• model
• substrate diffusion
• upflow anaerobic sludge blanket (UASB)

A mathematical model was developed to describe the anaerobic ammonium oxidation (ANAMMOX) process in a granular upflow anaerobic sludge blanket (UASB) reactor. ANAMMOX granules were cultivated in the UASB reactor by seeding aerobic granules. The granule-based reactor had a great N-loading resistant capacity. The model simulation results on the I-year reactor performance matched the experimental data well. The yield coefficient for the growth and the decay rate coefficient of the ANAMMOX granules were estimated to be 0.164 g COD g(-1) N and 0.00016 h(-1), respectively. With this model, the effects of process parameters on the reactor performance were evaluated. Results showed that the optimum granule diameter for the maximum N-removal should be between 1.0 and 1.3 mm and 3 that the optimum N loading rate should be 0.8 kg N m(-3) d(-1). In addition, the substrate micro-profiles in the ANAMMOX granules were measured with a micro-electrode to explore the diffusion dynamics within the granules, and the measured profiles matched the predicted results well. Biotechnol. Bioeng. 2009;103: 490-499.

• 出版日期2009-6-15
• 单位中国科学技术大学