Computer simulation of control strategies for optimal anaerobic digestion
| Autor: | Jing Liu, M O Possfelt, Sten Strömberg |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Engineering
Environmental Engineering Steady state (electronics) business.industry Process (computing) Proportional control Control engineering Hydrogen-Ion Concentration Anaerobic digestion Digestion (alchemy) Bioreactors Biogas Waste Management Control theory Ammonia Biofuels Computer Simulation Anaerobiosis business MATLAB computer Water Science and Technology computer.programming_language |
| Zdroj: | Water science and technology : a journal of the International Association on Water Pollution Research. 67(3) |
| ISSN: | 0273-1223 |
| Popis: | Three previously published control strategies for anaerobic digestion were implemented in Simulink/Matlab using Anaerobic Digestion Model No. 1 (ADM1) to model the biological process. The controllers’ performance were then simulated and evaluated based on their responses from five different types of process scenarios i.e. start-up and steady state performance as well as disturbances from concentration, pH and ammonia in the inflow. Of the three evaluated control strategies, the extremum-seeking variable gain controller gave the best overall performance. However, a proportional feedback controller based on the pH-level, used as a reference case in the evaluation, proved to give as good results as the extremum-seeking variable gain controller but with a lower wear on the pump. It was therefore concluded that a fast proportional control of the reactor pH is a key element for optimally controlling a low-buffering anaerobic digestion process. |
| Databáze: | OpenAIRE |
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