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Integrated urban wastewater systems : Prediction of particle settling velocity distributions

Integrated urban wastewater systems : Prediction of particle settling velocity distributions. 7 th International Conference Sewer Processes & Networks Sheffield, UK August 28-30, 2013. Thibaud Maruéjouls , Paul Lessard and Peter A. Vanrolleghem. Outline. Introduction

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Integrated urban wastewater systems : Prediction of particle settling velocity distributions

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  1. Integratedurbanwastewatersystems: Prediction of particlesettlingvelocity distributions 7th International Conference Sewer Processes & Networks Sheffield, UK August 28-30, 2013 Thibaud Maruéjouls, Paul Lessard and Peter A. Vanrolleghem

  2. Outline Introduction Particle settling velocity distribution (ViCAs protocol) Integrated model Results Conclusions

  3. Results Intro ViCAs and Vs Integrated model Conclusions Integrated system RIVER This study Particlesettlingvelocity distribution model (PSVDM) CSO Transport TSS-settling TSS-settling Separation treatment Biological Treatment Storage TSS-settling WWTP TSS-settling SEWER TSS-settling

  4. Results Intro ViCAs and Vs Integrated model Conclusions Objectives • Develop an integrated model based on sedimentation measurements • Reproduce the particle settling velocity distribution (PSVD) along the system

  5. Results Intro ViCAs and Vs Integrated model Conclusions ViCAs Particle settling velocity distribution 68% Fraction of particle mass with a Vs lessthan (%) 1.6 m/h Settlingvelocity Vs (m/h) Chebbo and Gromaire (2009) – Journal of EnvironmentalEngineering

  6. Results Intro ViCAs and Vs Integrated model Conclusions ViCAs Particle settling velocity distribution Class 5 Class 4 Fraction of particle mass with a Vs lessthan (%) Class 3 Class 2 Class 1 Vs1=0.03 Settlingvelocity Vs (m/h)

  7. Results Intro ViCAs and Vs Integrated model Conclusions ViCAs PSVD and concentration Low TSS concentration Slow PSVD Fraction of particle mass with a Vs lessthan (%) High TSS concentration FastPSVD Settlingvelocity Vs (m/h)

  8. Results Intro ViCAs and Vs Integrated model Conclusions Integrated systemInputs Fast PSVD WW Slow PSVD Fast PSVD DW Slow PSVD

  9. Results Intro ViCAs and Vs Integrated model Conclusions Integrated systemOutputs Simulated PSVD compared with observed Simulated PSVD compared with observed

  10. Results Intro ViCAs and Vs Integrated model Conclusions PSVD DW observation Observed PC outlet PC PC Differenthours Observed PC inlet 1.6 m/h

  11. Results Intro ViCAs and Vs Integrated model Conclusions PSVDSimulation vs. observation Observed PC outlet PC PC PC outlet Differenthours Observed PC inlet PC inlet 1.6 m/h Maruéjouls et al. (2011) – Water Science & Technology

  12. Results Intro ViCAs and Vs Integrated model Conclusions Conclusions Integrated model with particle classes, requiring only few ViCAs experiments Reproduces the PSVD evolution between RT and PC Particle transport through urban system is improved Many processes are simulated under DW and WW conditions: sedimentation, RT cleaning systems, pumping induced resuspension

  13. Thanks Questions Canada Research Chair on Water Quality Modeling Collaborative Research and Development Grants

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