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Feasibility of Aquifer Recharge Using Reclaimed Water in the Tampa Bay Area March 31, 2009

Feasibility of Aquifer Recharge Using Reclaimed Water in the Tampa Bay Area March 31, 2009. Phil Waller, P.E. SWUCA and MIA Recovery Strategy. Aquifer Recharge Concepts. Indirect Aquifer Recharge Rapid Infiltration Basin (RIB). Direct Aquifer Recharge Recharge Wells. Project Scope of Work.

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Feasibility of Aquifer Recharge Using Reclaimed Water in the Tampa Bay Area March 31, 2009

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  1. Feasibility of Aquifer Recharge Using Reclaimed Water in the Tampa Bay AreaMarch 31, 2009 Phil Waller, P.E.

  2. SWUCA and MIA Recovery Strategy

  3. Aquifer Recharge Concepts Indirect Aquifer Recharge Rapid Infiltration Basin (RIB) Direct Aquifer Recharge Recharge Wells

  4. Project Scope of Work • Task 1 – Similar Projects, Hydrogeology, Water Quality, and Permitting Summary • Task 2 – Groundwater Modeling of indirect and direct aquifer recharge concepts • Task 3 – Cost Analyses of selected recharge concepts • Task 4 – Final Summary Report of findings

  5. Similar Projects Review Direct and Indirect Recharge California Groundwater Replenishment System in Orange Co., CA

  6. Similar Projects Review • RIBs in Florida • Commonly used for effluent disposal • Secondary treatment required • Some wetland polishing prior to RIBs WATER CONSERVII – Orange Co. Florida

  7. FDEP Reclaimed Water Treatment Requirements Less Difficulty More

  8. Ambient Aquifer Water Quality Avon Park Formation TDS mg/L

  9. Ambient Aquifer Water Quality Avon Park Formation TDS mg/L Filtration and HLD Meet Drinking Water Standards > 3,000 mg/L

  10. Ambient Aquifer Water Quality Avon Park Formation TDS mg/L Multiple Barriers TOC / TOX 1 Year Pilot Test < 3,000 mg/L > 500 mg/L

  11. Ambient Aquifer Water Quality Avon Park Formation TDS mg/L Multiple Barriers Carbon Absorption TOC / TOX Mutagenecity Testing 2 Year Full Scale Test < 500 mg/L

  12. SWFWMD Permitting • No new groundwater level impacts to the MIA. • Minimum flows and levels established for priority water bodies in the SWUCA. • Net benefit in the SWUCA must be demonstrated.

  13. Indirect Aquifer Recharge Concepts Areas Area 2 – Moderate connection to UFA Lakeland Area Area 1 – High connection to UFA Lake Wales Ridge Area Area 3 – Minimal connection to UFA Engineering Enhancements

  14. Area 1 Indirect Recharge Model Simulation 4 MGD Withdrawal Only From Avon Park Formation Change in water level in the Upper Floridan Aquifer Drawdown (ft)

  15. Area 1 Indirect Recharge Model Simulation 5 MGD Recharge and 4 MGD Withdrawal From Avon Park Formation Change in water level in the Upper Floridan Aquifer Drawdown (ft) Mounding (ft)

  16. Modeled Direct Aquifer Recharge Areas

  17. 20 MGD Recharge Only Model Simulations Water Level ImprovementsMIAPR Area 1 Middle +1.99 ft +0.33 ft Area 2 South +2.10 ft +0.60 ft Area 3 South +1.77 ft +0.75 ft Area 5

  18. Direct Aquifer Recharge Modeled Withdrawal Areas

  19. Coastal (Area 1) Direct Aquifer Recharge 20 MGD Recharge with 15 MGD Withdrawal Response Summary

  20. Inland (Area 2) Direct Aquifer Recharge 20 MGD Recharge with 15 MGD Withdrawal Response Summary Area 3S MIA= +0.73 feet PR= +0.02 feet

  21. Inland (Area 2) Direct Aquifer Recharge 20 MGD Recharge with 15 MGD Withdrawal Response Summary

  22. Combination Configurations Selected for Costing

  23. Indirect Recharge Configuration Indirect Recharge5 MGD AADF Withdrawal4 MGD AADF WWTF Pump Station 5-Mile Long Pipeline 5-Mile Long Pipeline Chloramination 5 MGD, 500 ACRE, 4 RIB Site 1-mile distance 2 Withdrawal Wells

  24. Coastal Direct Recharge Configuration Direct Recharge20 MGD AADF Withdrawal15 MGD AADF Advanced WWTF UV Cl2- Storage Tank Future Facilities Located at AWWTP (10-acre footprint) 10-Mile Long Pipeline Pump Station Chloramination UV Vacuum DO Removal 15-Mile Pipeline 8 Withdrawal Wells (1-acre per well) • Recharge Wells 24 Monitor Wells • 890 acres

  25. Inland Direct Recharge Configuration Direct Recharge20 MGD AADF Withdrawal15 MGD AADF Advanced WWTF MF RO Future Facilities Located at AWWTP (20-acre footprint) AOP/UV Cl2- Storage Tank 10-Mile Long Pipeline Pump Station Chloramination UV 20-Mile Pipeline Vacuum DO Removal 8 Withdrawal Wells (1-acre per well) • Recharge Wells 24 Monitor Wells • 890 acres

  26. Estimated 2009 Recharge Concept Costs

  27. Recharge Concept Summary

  28. Feasibility of Aquifer Recharge Using Reclaimed Water in the Tampa Bay AreaThe End Phil Waller, P.E. Phil Waller, P.E.

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