Control of an anaerobic reactor towards maximum biogas production.
A new control strategy is introduced for operating anaerobic digestion processes efficiently at high load. The control system includes a cascade controller embedded into a rule-based supervisory system based on extremum-seeking control. The control system measures pH and biogas production rate and varies the organic load by manipulating the influent flow. Good control performances were achieved during the start-up and steady-state running operations and during rejection of disturbances. The control system can run the process under a high load condition and efficiently reject disturbances without explicit measurement of the influent characteristics.
Liu
J
J
Dept of Biotechnology, Lund University, SE-221 00 Lund, Sweden. jing.liu@biotek.lu.se
Olsson
G
G
Mattiasson
B
B
D000465:Algorithms; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors; D006863:Hydrogen-Ion Concentration; D012722:Sewage; D013696:Temperature; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods; D018508:Water Purification / Q000295:instrumentation / Q000379:methods
D012722:Sewage