| Title |
A Respirometry based Control Strategy for Optimization of the Activated Sludge Process |
| Authors |
허남효(Nam Hyo Heo),최광수(Kwang Soo Choi),김창원(Chang Won Kim),김병군(Byong Goon Kim),강호(Ho Kang) |
| Abstract |
Recently, various control strategies for the activated sludge process based on respirometry were introduced by the IAWQ Task Group on Respirometry in its Scientific and Technical Report (STR). Respirometry is the measurement of the oxygen consumption rate of activated sludge under well defined experimental conditions. Because oxygen consumption is directly associated with both growth and substrate removal, respirometry is a useful technique for controlling and operating of the activated sludge process. This paper is based on two different respiration rate, which can be measurement with the substrate-limiting and excess of substrate condition. The actual respiration rate of activated sludge is dependent on the substrate concentration and reflects the loading of the plant, and the maximum respiration rate is independent of the substrate concentration. Literature shows that measuring actual respiration rate and maximum respiration rate can be useful for loading control, toxicity dection, estimation of active biomass on the activated sludge. In this study, actual and maximum specific respiration rate were used as control parameter for stable sludge loading rate and detection of toxicity, respectively. |