Impact on sludge inventory and control strategies using the Benchmark Simulation Model No. 1 with the Bürger-Diehl settler model
Author
Summary, in English
An improved one-dimensional (1-D) model for the secondary clarifier, i.e. the Bürger-Diehl model, was recently presented. The decisive difference to traditional layer models is that every detail of the implementation is in accordance with the theory of partial differential equations. The Bürger-Diehl model allows accounting for hindered and compressive settling as well as inlet dispersion. In this contribution, the impact of specific features of the Bürger-Diehl model on settler underflow concentration predictions, plant sludge inventory and mixed liquor suspended solids based control actions are investigated by using the benchmark simulation model no. 1. The numerical results show that the Bürger-Diehl model allows for more realistic predictions of the underflow sludge concentration, which is essential for more accurate wet weather modelling and sludge waste predictions. The choice of secondary settler model clearly has a profound impact on the operation and control of the entire treatment plant and it is recommended to use the Bürger-Diehl model as of now in any wastewater treatment plant modelling effort.
Department/s
- Mathematics (Faculty of Engineering)
- Partial differential equations
- Numerical Analysis
Publishing year
2015
Language
English
Pages
1524-1535
Publication/Series
Water Science and Technology
Volume
71
Issue
10
Document type
Journal article
Publisher
IWA Publishing
Topic
- Control Engineering
- Computational Mathematics
- Chemical Engineering
- Water Engineering
- Water Treatment
Keywords
- clarifier
- compression settling
- layer model
- underflow
- wet weather
Status
Published
Research group
- Partial differential equations
- Numerical Analysis
ISBN/ISSN/Other
- ISSN: 0273-1223