| Abstract |
| Many municipal wastewater treatment plants (MWTPs) rely on activated sludge processes, which achieve high organic removal but relatively low nutrient removal. Granule sludge sequencing batch reactors (GS-SBR) are attention as an alternative due to their small footprint, low energy consumption, and reduced excess sludge production. This study analyzes the kinetic mechanism of reducing SBR using aerobic granular sludge with varying organic concentrations. At influent concentrations of 600 mg COD/L, 30 mg T-N/L, and 6 mg T-P/L, the percentages of organic and nutrient removals ranged from 90.1%-95.0% for COD, 53.2%-62.3% for T-N, and 54.6%-6.7% for T-P. NH4-N and NO3-N concentrations were in the range of 28-9.7 mg/L and 0-12.6 mg/L, respectively. The organic matter removal rate (k) for an influent concentration of 600 mg COD/L exceeded 5.0 day-1. Despite a high influent organic loading compared with activated sludge processes, GS-SBR proved to be more effective than existing activated sludge processes with K values of 5-8 days. Regarding the characteristics of the sludge granules, the size of the initial granules within a week was approximately 0.6 mm, and the structure appeared visually compact. |
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| Key Words |
| Aerobic granule sludge, Kinetic mechanism, Sequencing batch reactor, Substrate, 호기성 입상슬러지, 동력학적 메커니즘, 연속회분식공정, 기질 |
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