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Avoiding digester imbalance through real-time expert system control of dilution rate
P Pullammanappallil1, J Harmon, D P Chynoweth
1Department of Chemical Engineering, University of Florida, Gainesville 32611.
Applied Biochemistry and Biotechnology
|January 1, 1991
Summary
This study introduces an expert system for robust anaerobic digester control, overcoming limitations of conventional methods. The system successfully manages changes in digester feed, ensuring stable operation.
Area of Science:
- Environmental Engineering
- Biotechnology
- Process Control
Background:
- Anaerobic digester control is complex due to multiple imbalance causes.
- Conventional control fails with disturbances that alter steady-state gain sign.
Purpose of the Study:
- To develop an expert system for reliable anaerobic digester process control.
- To address the limitations of traditional control schemes in dynamic environments.
Main Methods:
- An expert system algorithm was designed and implemented.
- The algorithm was tested using a simulated continuous anaerobic digester model.
Main Results:
- The expert system successfully compensated for simulated changes in digester feed medium.
- The developed approach demonstrated enhanced stability compared to conventional methods.
Conclusions:
- Expert systems offer a viable solution for challenging anaerobic digester control.
- This approach enhances process stability and resilience to feed variations.