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KMID : 1024520180270040233
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Journal of the Environmental Sciences
2018 Volume.27 No. 4 p.233 ~ p.240
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Applicability of the SBR Process Using Aerobic Granular Sludge (AGS) in Municipal Wastewater Treatment
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Yae Jae-Bin
Ryu Jae-Hoon
Hong Seong-Wan
Kim Hyun-Gu
Ahn Dae-Hee
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Abstract
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The purpose of this study was to confirm the applicability of aerobic granular sludge (AGS) in the advanced sewage treatment process. Simulated influent was used in the operation of a laboratory scale reactor. The operation time of one cycle was 4 h and the reactor was operated for six cycles per day. The volume exchange ratio was 50%. The influent was injected in divisions of 25% to increase the removal efficiency of nitrogen in every cycle. As a result, the removal efficiencies of CODCr and TN in this reactor were 98.2% and 76.7% respectively. During the operation period, the AGS/MLVSS concentration ratio increased from 70.0% to 86.7%, and the average SVI30 was 67 mL/g. The SNR and SDNR were 0.073 0.161 kg NH4+-N/kg MLVSS/day and 0.071 0.196 kg NO3--N/kg MLVSS/day respectively. These values were higher or similar to those reported in other studies. The operation time of the process using AGS is shorter than that of the conventional activated sludge process. Hence, this process can replace the activated sludge process.
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KEYWORD
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Aerobic granular sludge, Sequencing batch reactor, Advanced sewage treatment, SNR, SDNR
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