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An Efficient Contact Tank Design for Potable Water Treatment

Year 2018, Volume: 29 Issue: 2, 8279 - 8294, 01.03.2018
https://doi.org/10.18400/tekderg.322491

Abstract

Bu
çalışmada bir temas tankının içindeki türbülanslı akış ile arıtıcı
konsantrasyonunun hareketinin üç boyutlu sayısal benzetimi ikinci mertebeden
yakınsak bir hesaplama modeli kullanılarak gerçekleştirilmiştir. Arıtıcının
zamanla değişen akım ile karışımı Large Eddy Simulation (LES) türbülans
yaklaşımı kullanılarak modellenmiştir. Temas tankının girişinden enjekte edilen
arıtıcı konsantrasyonunun tankın çıkışındaki dağılımını gösteren Kalma Süresi
Dağılımı (KSD) ve toplam KSD eğrileri kullanılarak temas tankının hidrolik ve
karışım verimlerine ait endeksler belirlenmiştir.  Tank içindeki şaşırtma perdeleri üzerinde
yapılan değişiklik ile temas sisteminin verimi arttırılarak enerji sarfiyatlarının
azaltılabileceği gösterilmiştir. Önerilen yeni perde tasarımı sayesinde temas tankının
hidrolik verimi %44, karışım verimi ise %42 oranında arttırılmış, suyun
iletilmesi için gereken enerji sarfiyatı ise %43 oranında azaltılmıştır. 

References

  • Çakmakçı, M., Özkaya, B., Yetilmezsoy, K. Ve Demir, S. Su Arıtma Tesislerinin Tasarım ve İşletme Esasları, İstanbul, 2013.
  • Zhang, J., Martinez, A. E. T. and Zhang, Q., Hydraulic Efficiency in RANS of the Flow in Multi-chambered Contactors, Journal of Hydraulic Engineering, 139, 1150-1157, 2013.
  • Angeloudis, A., Stoesser, T., Falconer, R.A. and Kim,D.J., Flow, Transport and Disinfection Performance in Small –and Full-Scale Contact Tanks, Journal of Hydro-Environment Research, 9, 15-27, 2015.
  • Rauen, W.B., Lin, B., Falconer, R.A. and Teixeira, E.C., CFD and Experimental Model Studies for Water Disinfection Tanks with Low Reynolds Number Flows, Chemical Engineering Journal, 137, 550-600, 2008.
  • Angeloudis, A., Stoesser, T., and Falconer, R.A., Predicting the Disnfection Efficiency Range in Chlorine Contact Tanks Through a CFD-Based Approach, Water Research, 60, 118-129, 2014.
  • Kim, D., Kim, D.I., Kim, J.H., and Stoesser, T., Large Eddy Simulation of Flow and Tracer Trasnport in Multichamber Ozone Contactors, Journal of Environmental Engineering, 136, 1, 22-31, 2010.
  • Wols, B.A., Hofman, J.A.M.H., Uijttewaal, W.S.J., Rietveld, L.C. and Dijk, J.C., Evaluation of Different Disinfection Calculation Methods using CFD, Environmental Modelling & Software, 25, 573-582, 2010.
  • Zhang, J., Martinez, A.E.T., Lei, H. and Zhang, Q., Indicators for Technological, Environmental and Economic Sustainablity of Ozone Contactors, Water Research, 101, 606-616, 2016.
  • Zhang, J., Martinez, A.E.T., and Zhang, Q., Evaluation of Large Eddy Simulation and RANS for Determining Hydraulic Performance of Disinfection Systems for Water Treatment, Journal of Fluids Engineering, 136, 121102-121102-9, 2014.
  • Kim, D., Elovitz, M., Roberts, P.J.W. and Kim, J.H., Using 3D LIF to Investigate and Improve Performance of a Multichamber Ozone Contactor, Americal Water Works Association Journal, 102, 61-70, 2010.
  • Zhang, Y., Street, R.L. and Koseff, J.R., A Dynamic Mixed Subgrid-Scale Model and Its Application to Turbulent Recirculating Flows, Physics of Fluids, 5, 3186-3196, 1993.
  • OpenFOAM, The OpenFOAM Foundation; OpenCFD Ltd.: Bracknell, UK, 2015.
  • Demirel, E. and Aral, M.M., Unified Analysis of Multi-chamber Contact Tanks and Mixing Efficiency Based on Vorticity Field. Part I: Hydrodynamic Analysis, Water, 8, 495-505, 2016.
  • U.S. EPA. , Disinfection Profiling and Benchmarking Guidance Manual, Appendix A. Rep. No. EPA-815-R-99-013, 1999, U.S. EPA, Washington, D.C
  • Demirel, E. and Aral, M.M., Unified Analysis of Multi-Chamber Contact Tanks and Mixing Efficiency Based on Vorticity Field. Part II: Transport Analysis, Water, 8, 537-554, 2016.
  • Elliot, T., Zeier, B., Xagoraraki, I. and Harrington, G. W., Energy Use at Wisconsin’s Drinking Water Facilities, Rep. 2003, 222-1, Energy Center of Wisconsin, Madison, WI.
  • Aral, M.M. and Demirel, E., Novel Slot-Baffle Design to Improve Mixing Efficiency and Reduce Cost of Disinfection in Drinking Water Treatment, Journal of Environmental Engineering ASCE, Artilce in Press.
  • Aral, M.M. and Demirel, E., A New Baffle Design to Improve Mixing and Reduce the Flow Through Energy Requirements in Chlorine and Ozone Contact Tanks, Patent # 62/498,260, 10 January 2017.
  • Angeloudis, A., Stoesser, T., Gualtieri, C. and Falconer, R.A., Contact Tanks Design Impact on Process performance, Environ. Model. Assess., 21, 563-576, 2016.

An Efficient Contact Tank Design for Potable Water Treatment

Year 2018, Volume: 29 Issue: 2, 8279 - 8294, 01.03.2018
https://doi.org/10.18400/tekderg.322491

Abstract

In this study, a second order accurate Large Eddy
Simulation (LES) model is used to simulate three-dimensional turbulent flow and
disinfectant transport in a contact tank. The hydraulic and mixing indexes of
the tank are evaluated based on computational tracer studies. It is shown that
the energy consumption rates of the contact tank can be reduced by the use of the
proposed slot-baffle design instead of the conventional baffle system that is used
in these facilities. The proposed slot-baffle design improves the hydraulic
efficiency by 44%, mixing efficiency by 42% and reduces the energy required to
drive the flow through the system by 43%. The outcome reported in this study
shows that the energy consumption in water treatment plants can be significantly
reduced when the novel baffle design is implemented on existing contact tanks
without expensive infrastructure modifications. 



 

References

  • Çakmakçı, M., Özkaya, B., Yetilmezsoy, K. Ve Demir, S. Su Arıtma Tesislerinin Tasarım ve İşletme Esasları, İstanbul, 2013.
  • Zhang, J., Martinez, A. E. T. and Zhang, Q., Hydraulic Efficiency in RANS of the Flow in Multi-chambered Contactors, Journal of Hydraulic Engineering, 139, 1150-1157, 2013.
  • Angeloudis, A., Stoesser, T., Falconer, R.A. and Kim,D.J., Flow, Transport and Disinfection Performance in Small –and Full-Scale Contact Tanks, Journal of Hydro-Environment Research, 9, 15-27, 2015.
  • Rauen, W.B., Lin, B., Falconer, R.A. and Teixeira, E.C., CFD and Experimental Model Studies for Water Disinfection Tanks with Low Reynolds Number Flows, Chemical Engineering Journal, 137, 550-600, 2008.
  • Angeloudis, A., Stoesser, T., and Falconer, R.A., Predicting the Disnfection Efficiency Range in Chlorine Contact Tanks Through a CFD-Based Approach, Water Research, 60, 118-129, 2014.
  • Kim, D., Kim, D.I., Kim, J.H., and Stoesser, T., Large Eddy Simulation of Flow and Tracer Trasnport in Multichamber Ozone Contactors, Journal of Environmental Engineering, 136, 1, 22-31, 2010.
  • Wols, B.A., Hofman, J.A.M.H., Uijttewaal, W.S.J., Rietveld, L.C. and Dijk, J.C., Evaluation of Different Disinfection Calculation Methods using CFD, Environmental Modelling & Software, 25, 573-582, 2010.
  • Zhang, J., Martinez, A.E.T., Lei, H. and Zhang, Q., Indicators for Technological, Environmental and Economic Sustainablity of Ozone Contactors, Water Research, 101, 606-616, 2016.
  • Zhang, J., Martinez, A.E.T., and Zhang, Q., Evaluation of Large Eddy Simulation and RANS for Determining Hydraulic Performance of Disinfection Systems for Water Treatment, Journal of Fluids Engineering, 136, 121102-121102-9, 2014.
  • Kim, D., Elovitz, M., Roberts, P.J.W. and Kim, J.H., Using 3D LIF to Investigate and Improve Performance of a Multichamber Ozone Contactor, Americal Water Works Association Journal, 102, 61-70, 2010.
  • Zhang, Y., Street, R.L. and Koseff, J.R., A Dynamic Mixed Subgrid-Scale Model and Its Application to Turbulent Recirculating Flows, Physics of Fluids, 5, 3186-3196, 1993.
  • OpenFOAM, The OpenFOAM Foundation; OpenCFD Ltd.: Bracknell, UK, 2015.
  • Demirel, E. and Aral, M.M., Unified Analysis of Multi-chamber Contact Tanks and Mixing Efficiency Based on Vorticity Field. Part I: Hydrodynamic Analysis, Water, 8, 495-505, 2016.
  • U.S. EPA. , Disinfection Profiling and Benchmarking Guidance Manual, Appendix A. Rep. No. EPA-815-R-99-013, 1999, U.S. EPA, Washington, D.C
  • Demirel, E. and Aral, M.M., Unified Analysis of Multi-Chamber Contact Tanks and Mixing Efficiency Based on Vorticity Field. Part II: Transport Analysis, Water, 8, 537-554, 2016.
  • Elliot, T., Zeier, B., Xagoraraki, I. and Harrington, G. W., Energy Use at Wisconsin’s Drinking Water Facilities, Rep. 2003, 222-1, Energy Center of Wisconsin, Madison, WI.
  • Aral, M.M. and Demirel, E., Novel Slot-Baffle Design to Improve Mixing Efficiency and Reduce Cost of Disinfection in Drinking Water Treatment, Journal of Environmental Engineering ASCE, Artilce in Press.
  • Aral, M.M. and Demirel, E., A New Baffle Design to Improve Mixing and Reduce the Flow Through Energy Requirements in Chlorine and Ozone Contact Tanks, Patent # 62/498,260, 10 January 2017.
  • Angeloudis, A., Stoesser, T., Gualtieri, C. and Falconer, R.A., Contact Tanks Design Impact on Process performance, Environ. Model. Assess., 21, 563-576, 2016.
There are 19 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Articles
Authors

Ender Demirel

Mustafa Aral This is me

Publication Date March 1, 2018
Submission Date June 23, 2017
Published in Issue Year 2018 Volume: 29 Issue: 2

Cite

APA Demirel, E., & Aral, M. (2018). An Efficient Contact Tank Design for Potable Water Treatment. Teknik Dergi, 29(2), 8279-8294. https://doi.org/10.18400/tekderg.322491
AMA Demirel E, Aral M. An Efficient Contact Tank Design for Potable Water Treatment. Teknik Dergi. March 2018;29(2):8279-8294. doi:10.18400/tekderg.322491
Chicago Demirel, Ender, and Mustafa Aral. “An Efficient Contact Tank Design for Potable Water Treatment”. Teknik Dergi 29, no. 2 (March 2018): 8279-94. https://doi.org/10.18400/tekderg.322491.
EndNote Demirel E, Aral M (March 1, 2018) An Efficient Contact Tank Design for Potable Water Treatment. Teknik Dergi 29 2 8279–8294.
IEEE E. Demirel and M. Aral, “An Efficient Contact Tank Design for Potable Water Treatment”, Teknik Dergi, vol. 29, no. 2, pp. 8279–8294, 2018, doi: 10.18400/tekderg.322491.
ISNAD Demirel, Ender - Aral, Mustafa. “An Efficient Contact Tank Design for Potable Water Treatment”. Teknik Dergi 29/2 (March 2018), 8279-8294. https://doi.org/10.18400/tekderg.322491.
JAMA Demirel E, Aral M. An Efficient Contact Tank Design for Potable Water Treatment. Teknik Dergi. 2018;29:8279–8294.
MLA Demirel, Ender and Mustafa Aral. “An Efficient Contact Tank Design for Potable Water Treatment”. Teknik Dergi, vol. 29, no. 2, 2018, pp. 8279-94, doi:10.18400/tekderg.322491.
Vancouver Demirel E, Aral M. An Efficient Contact Tank Design for Potable Water Treatment. Teknik Dergi. 2018;29(2):8279-94.