| 1. |
- Carlsson, Bengt, et al.
(författare)
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Analysis of simple bioreactor models : A comparison between Monod and Contois kinetics
- 2014
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Ingår i: Proc. IWA Conference on Activated Sludge – 100 Years and Counting. - : IWA Publishing.
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Konferensbidrag (refereegranskat)abstract
- In this paper, an analysis of simple bioreactors in series is presented. The bioreactors are analysed for growth kinetics of the biomass described by a Monod and a Contois function. In particular, it is studied how the effluent substrate concentration is depending on the influent substrate concentration during steady state. It is shown that by going from one to two bioreactors in series completely changes the process behaviour when the growth kinetics is described by a Monod function. It is also shown that a bioreactor described by Contois kinetics has a completely different behaviour compared with the Monod case.
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| 2. |
- Carlsson, Bengt, et al.
(författare)
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Fault detection and isolation of sensors in aeration control systems
- 2014
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Ingår i: Proc. IWA World Water Congress. - : IWA Publishing.
-
Konferensbidrag (refereegranskat)abstract
- In this paper, we consider the problem of fault detection and isolation in the aeration system of an activated sludge process. The purpose is to detect and localize possible faults in dissolved oxygen and air flow sensors. The dissolved oxygen in each aerated zone is assumed to be controlled automatically. As the basis for a fault detection algorithm we use the ratio of air flow rates into different zones. The method is evaluated in two scenarios: using the Benchmark Simulation Model nº 1 by Monte Carlo simulations, and using data from a wastewater treatment plant. The fault detection method shows good results for a correct and early fault detection and isolation.
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| 3. |
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| 4. |
- Zambrano, Jesús, et al.
(författare)
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Optimizing zone volumes in bioreactors described by Monod and Contois growth kinetics
- 2014
-
Ingår i: Proc. IWA World Water Congress. - : IWA Publishing.
-
Konferensbidrag (refereegranskat)abstract
- In this paper, an optimization study of simple bioreactors in series is presented. For a given total reactor volume, the zone volumes are optimized with respect to the effluent substrate. Also simple activated sludge models are considered. Both Monod and Contois functions are used for describing the growth kinetics. It is shown that the optimal zone volumes are very different depending on the choice of growth kinetics. In particular, it is studied how the influent steady state substrate concentration influence the optimal configuration.
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| 5. |
- Zambrano, Jesús, et al.
(författare)
-
Steady-state analysis of simple activated sludge processes with Monod and Contois growth kinetics
- 2014
-
Ingår i: Proc. IWA Conference on Activated Sludge – 100 Years and Counting. - : IWA Publishing.
-
Konferensbidrag (refereegranskat)abstract
- In this paper, simple activated sludge process (ASP) models with Monod and Contois biomass growth kinetics are compared. In particular, the cases of an ASP with one or two bioreactors are studied. Of particular concern in this study is to investigate how the effluent substrate concentration depends on the influent substrate concentration. It is shown that the results are very different dependingon the number of bioreactors and on the growth kinetics assumed.
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