Computational Fluid Dynamics Modelling of Hydraulics and Sedimentation in Process Reactors During Aeration Tank Settling

Mette Dam Jensen, Pernille Ingildsen, Michael R. Rasmussen, Jesper Laursen

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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.
OriginalsprogEngelsk
TitelNutrient Management in Wastewater Treatment Processes and Recycle Streams : The Conference Proceedings
Antal sider8
ForlagIWA Publishing
Publikationsdato2005
Sider775-782
StatusUdgivet - 2005
BegivenhedThe IWA Specialized Conference on Nutrient Management in Wastewater Treatment Processes and Recycle Streams - Krakow, Polen
Varighed: 18 sep. 200521 sep. 2005

Konference

KonferenceThe IWA Specialized Conference on Nutrient Management in Wastewater Treatment Processes and Recycle Streams
Land/OmrådePolen
ByKrakow
Periode18/09/200521/09/2005

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

Citationsformater