Automatic control of the effluent turbidity from a chemically enhanced primary treatment with microsieving
(2017) In Water Science and Technology 76(7). p.1770-1780- Abstract
For chemically enhanced primary treatment (CEPT) with microsieving, a feedback proportional integral controller combined with a feedforward compensator was used in large pilot scale to control effluent water turbidity to desired set points. The effluent water turbidity from the microsieve was maintained at various set points in the range 12-80 NTU basically independent for a number of studied variations in influent flow rate and influent wastewater compositions. Effluent turbidity was highly correlated with effluent chemical oxygen demand (COD). Thus, for CEPT based on microsieving, controlling the removal of COD was possible. Thereby incoming carbon can be optimally distributed between biological nitrogen removal and anaerobic... (More)
For chemically enhanced primary treatment (CEPT) with microsieving, a feedback proportional integral controller combined with a feedforward compensator was used in large pilot scale to control effluent water turbidity to desired set points. The effluent water turbidity from the microsieve was maintained at various set points in the range 12-80 NTU basically independent for a number of studied variations in influent flow rate and influent wastewater compositions. Effluent turbidity was highly correlated with effluent chemical oxygen demand (COD). Thus, for CEPT based on microsieving, controlling the removal of COD was possible. Thereby incoming carbon can be optimally distributed between biological nitrogen removal and anaerobic digestion for biogas production. The presented method is based on common automation and control strategies; therefore fine tuning and optimization for specific requirements are simplified compared to model-based dosing control.
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- author
- Väänänen, J. LU ; Memet, S. ; Gunther, Torsten ; Lilja, M. LU ; Cimbritz, M. LU and La Cour Jansen, J. LU
- organization
- publishing date
- 2017-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Coagulation, Control, Flocculation, Microsieving, Turbidity
- in
- Water Science and Technology
- volume
- 76
- issue
- 7
- pages
- 11 pages
- publisher
- IWA Publishing
- external identifiers
-
- scopus:85030860284
- pmid:28991792
- ISSN
- 0273-1223
- DOI
- 10.2166/wst.2017.358
- language
- English
- LU publication?
- yes
- id
- a902bc5a-23ae-4e23-8f4c-bcf5987f913f
- date added to LUP
- 2017-10-18 08:03:57
- date last changed
- 2025-01-07 23:01:46
@article{a902bc5a-23ae-4e23-8f4c-bcf5987f913f, abstract = {{<p>For chemically enhanced primary treatment (CEPT) with microsieving, a feedback proportional integral controller combined with a feedforward compensator was used in large pilot scale to control effluent water turbidity to desired set points. The effluent water turbidity from the microsieve was maintained at various set points in the range 12-80 NTU basically independent for a number of studied variations in influent flow rate and influent wastewater compositions. Effluent turbidity was highly correlated with effluent chemical oxygen demand (COD). Thus, for CEPT based on microsieving, controlling the removal of COD was possible. Thereby incoming carbon can be optimally distributed between biological nitrogen removal and anaerobic digestion for biogas production. The presented method is based on common automation and control strategies; therefore fine tuning and optimization for specific requirements are simplified compared to model-based dosing control.</p>}}, author = {{Väänänen, J. and Memet, S. and Gunther, Torsten and Lilja, M. and Cimbritz, M. and La Cour Jansen, J.}}, issn = {{0273-1223}}, keywords = {{Coagulation; Control; Flocculation; Microsieving; Turbidity}}, language = {{eng}}, month = {{10}}, number = {{7}}, pages = {{1770--1780}}, publisher = {{IWA Publishing}}, series = {{Water Science and Technology}}, title = {{Automatic control of the effluent turbidity from a chemically enhanced primary treatment with microsieving}}, url = {{http://dx.doi.org/10.2166/wst.2017.358}}, doi = {{10.2166/wst.2017.358}}, volume = {{76}}, year = {{2017}}, }