한국환경과학회지 제27권 제4호 (p.233-240)

|ORIGINAL ARTICLE|
호기성 그래뉼 슬러지를 이용한 연속 회분식 공정의 도시하수처리에 대한 적용

Applicability of the SBR Process Using Aerobic Granular Sludge (AGS) in Municipal Wastewater Treatment
키워드 :
Aerobic granular sludge,Sequencing batch reactor,Advanced sewage treatment,SNR,SDNR

목차

Abstract
1. 서 론
2. 실험재료 및 방법
  2.1. 하수 성상 및 실험재료
  2.2. 동역학 인자 도출방법
  2.3. 실험장치 및 운전조건
  2.4. 수질분석 및 현미경 관찰
3. 결과 및 고찰
  3.1. 동역학 인자 도출
  3.2. 영양물질 제거효율
  3.3. 호기성 그래뉼 슬러지의 농도 및 비율 변화
  3.4. 호기성 그래뉼 슬러지의 침전성 변화
4. 결 론
REFERENCE

초록

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.