상하수도학회지 제33권 제6호 (p.481-489)

|Research Papers|
연속회분식반응조에서 호흡률에 기반한 포기공정의 예측제어

Predictive aeration control based on the respirometric method in a sequencing batch reactor
키워드 :
Aeration,Predictive control,Respirometric method,Sequencing batch reactor,포기공정,예측제어,호흡률법,연속회분식반응조

목차

ABSTRACT
1. 서 론
2. 재료 및 방법
3. 결과 및 고찰
   3.1 연속회분식반응조의 주기내 호흡률 특성
   3.2 호흡률에 기반한 포기공정의 예측제어
   3.3 연속회분식반응조의 운전특성
4. 결 론
References

초록

As aeration is an energy-intensive process, its control has become more important to save energy and to meet strict effluent limits. In this study, predictive aeration control based on the respirometric method has been applied to the sequencing batch reactor (SBR) process. The variation of the respiration rate by nitrification was great and obvious, so it could be a very useful parameter for the predictive aeration control. The maximum respiration rate due to nitrification was about 60 mg O2/L‧h and the maximum specific nitrification rate was about 7.5 mg N/g MLVSS‧h. The aeration time of the following cycle of the SBR was daily adjusted in proportion to that which was previously determined based on the sudden decrease of respiration rate at the end of nitrification in the respirometer. The aeration time required for nitrification could be effectively predicted and it was closely related to influent nitrogen loadings. By the predictive aeration control the aerobic period of the SBR has been optimized, and energy saving and enhanced nitrogen removal could be obtained.