Research Article
Apr 1974
Control of Anaerobic Digestion Process
Authors: Aaron S. Collins and Bobby E. GillilandAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 100, Issue 2
Abstract
The anaerobic digester is a common biological wastewater treatment process. A recently proposed fifth-order, nonlinear, dynamic model for the anaerobic digester has been shown to be qualitatively correct. Three methods of controlling the anaerobic digester are considered: base addition, organism recycle, and flow control. Feedback and feedforward controllers are designed for each of the control mechanisms, and a discrete adaptive predictive flow control algorithm is proposed. The control studies indicate that feedforward base addition control, in response to organic loading, is more effective and less expensive than feedback proportional base addition control. The predictive controller periodically computes optimum influent flow rate to the digester based on model response. This direct digital control method is adaptable to other wastewater treatment processes and offers flexible control objectives, allowing operational costs and quality of performance to be assigned weight factors, based on operational goals.
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Published In
Journal of the Environmental Engineering Division
Volume 100 • Issue 2 • April 1974
Pages: 487 - 506
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Apr 1974
Published online: Feb 11, 2021
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Authors
Affiliations
Aaron S. Collins
Sr. Nuclear Steam Supply Systems Engr.; Combustion Engrg., Inc., Windsor, CT, USA
Bobby E. Gilliland
Asst. to Dean of Coll. of Engrg.; Assoc. Prof. of Electrical and Computer Engrg., Clemson Univ., Clemson, SC, USA
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.