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Wetlands Treatment Modeling

Wetlands Treatment Modeling. David Crohn, Andrew Chang, Nels Ruud Department of Soil and Environmental Sciences University of California, Riverside. The Site. Located at Hemet/San Jacinto Water Treatment Facility Managed by Eastern Municipal Water District of Riverside County

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Wetlands Treatment Modeling

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  1. Wetlands Treatment Modeling David Crohn, Andrew Chang, Nels Ruud Department of Soil and Environmental Sciences University of California, Riverside

  2. The Site • Located at Hemet/San Jacinto Water Treatment Facility • Managed by Eastern Municipal Water District of Riverside County • Financed by EMWD and the Bureau of Reclamation

  3. The Site • Multipurpose • education • wildlife habitat • water finishing • Completely constructed • Three phase design

  4. The Project • Monitor the performance of the EMWD • Identify and monitor key parameters • Model key processes • Develop comprehensive computer program • Sensitivity analysis • Eliminate less important processes • Develop simpler, more robust, planning tool for designing constructed wetlands in arid climates

  5. Parameters • Temperature • Solar radiation • Wind speed • Inflow and outflow • Depth • Nitrogen (organic, ammonium, nitrate) • Phosphate

  6. The Site

  7. Tracer Study Design ••••• ••••• ••••• ••••• • • • • • • • • ••••• ••••• ••••• ••••• ••••• • • • •

  8. Sample Collection

  9. 3 Phase System

  10. Inlets

  11. Outlet

  12. Outlets

  13. h: water surface (L) hg: ground surface (L) x: distance from influent weir (L) W: channel width (L) n: channel porosity (L3/L3) , : hydraulic friction coefficients P: precipitation rate (L/T) E: evapotranspiration rate (L/T) Advection-Diffusion Processes

  14. Channel 1

  15. Channel 2

  16. Channel 3

  17. Channel 4

  18. Border

  19. SolarRadiation Influent (Treatment Plant [& Stormwater]) Precipitation EmergencySpillway Evapo-transpiration Outflow(TreatedWater) Water Column Soil Water Impeding Layer DeepPercolation Water Cycle

  20. Influent (Treatment Plant [& Stormwater]) SolarRadiation SuspendedSolids &Particulates WaterTemp. Plankton& Algae Macro-phytes DissolvedCompounds Outflow(TreatedWater) Water Column Sediments Energy Cycle

  21. Influent (Treatment Plant [& Stormwater]) Atmospheric Carbon(carbon dioxide or methane) SolarRadiation Dissolved Recalcitrant Carbon Dissolved Labile Organic Carbon WaterTemp. Plankton& Algae Macro-phytes Suspended Recalcitrant Carbon SuspendedLabile Organic Carbon Outflow(TreatedWater) Denitrification Water Column Sediments Oxygen Cycle

  22. Influent (Treatment Plant [& Stormwater]) Avian wastes SolarRadiation Atmospheric Carbon dioxide Dissolved Labile Carbon WaterTemp. Plankton& Algae Macro-phytes SuspendedLabile Carbon Solution Oxygen Outflow(TreatedWater) Nitrification Water Column Sediments Carbon Cycle

  23. Influent (Treatment Plant [& Stormwater]) SolarRadiation Avian wastes SuspendedSolids &ParticulatePhosphorus WaterTemp. Plankton& Algae Macro-phytes DissolvedPhosphorus Outflow(TreatedWater) Water Column Sediments Phosphorus Cycle

  24. Avian wastes Ammonia Denitri-fication Precipitation Influent (Treatment Plant [& Stormwater]) SolarRadiation Fixation OrganicNitrogen inSuspendedSolids WaterTemp. Plankton& Algae Macro-phytes DissolvedAmmonium nitrification Outflow(TreatedWater) DissolvedNitrate Water Column Sediments Nitrogen Cycle

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