| Summary: | 碩士 === 國立中央大學 === 環境工程研究所 === 87 === The SBR was designed on the bases of steady-state inflow, and was operated with a fixed reaction-time of different operation phases (Anaerobic phase, Aerobic phase and Anoxic phase) in order to simultaneously removal Carbon, Nitrogen and Phosphorus pollutant in the wastewater.However, the quality and quantity of a municipal wastewater are varying with time. Thus, the conventional steady-state control strategies applied in wastewater treatment plants usually can not result in best SBR performance.
The purpose of this research is to explore the interaction between every practical phase and the break point of ORP and pH in the single-tank continuous inflow SBR under the dynamic inflow. Further, more the purpose is also to find out a practical strategy to real-time control.The SBR with dynamic inflow in order to promote the performance of system.
The results showed that the break-points on ORP and pH profiles can point out the ends of Nitrification and Denitrification. Which can be used as practical construe points to real-time control this SBR. By this way, the real-time control strategy was build to carry out the process control of this SBR.
By comparing to the sequencing control, the removal efficiency of COD was up to 98% by the real-time controlled SBR. The removal efficiency of Nitrogen was also improved and up to approximate 97%.Moreover, the removal of Phosphorus was up to 84%. This findings show that the substrates removal efficiency of the real-time controlled SBR were improved.
In addition, the retention time of system can be reduced by real-time control. Which also results in the saving of aeration and system capacity.
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