Abstract
Aeration Tank Settling is a control method alowing settling in the process tank during high hydraulic load. The control method is patented. Aeration Tank Settling has been applied in several waste water treatment plant's using present design of the process tanks. Some process tank designs have shown to be more effective than others. To improve the design of less effective plants Computational Fluid Dynamics (CFD) modelling of hydraulics and sedimentation has been applied. The paper discusses the results at one particular plant experiencing problems with partly short-circuiting of the inlet and outlet causing a disruption of the sludge blanket at the outlet and thereby reducing the retention of sludge in the process tank. The model has allowed us to establish a clear picture of the problems arising at the plant during Aeration Tank Settling. Secondly, several process tank design changes have been suggested and tested by means of computational fluid dynamics modelling. The most promissing design change have been found and reported.
Originalsprog | Engelsk |
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Titel | Nutrient Management in Wastewater Treatment Processes and Recycle Streams : The Conference Proceedings |
Antal sider | 8 |
Forlag | IWA Publishing |
Publikationsdato | 2005 |
Sider | 775-782 |
Status | Udgivet - 2005 |
Begivenhed | The IWA Specialized Conference on Nutrient Management in Wastewater Treatment Processes and Recycle Streams - Krakow, Polen Varighed: 18 sep. 2005 → 21 sep. 2005 |
Konference
Konference | The IWA Specialized Conference on Nutrient Management in Wastewater Treatment Processes and Recycle Streams |
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Land/Område | Polen |
By | Krakow |
Periode | 18/09/2005 → 21/09/2005 |
Bibliografisk note
The paper is presended in session 17: Simulation for design and operation.Emneord
- Aeration Tank Settling
- Computational Fluid Dynamics
- Hydraulics
- Multi-fluid
- Two-phase modelling
- Process tank design
- Sedimentation
- Wastewater Treatment Plant