Town of Davie Utilities Department Renuka M. Bajnath John McGeary.

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Presentation transcript:

Town of Davie Utilities Department Renuka M. Bajnath John McGeary

 Population and Development  Population projected to triple (30,000 – 90,000) Regional Activity Center zoning (RAC) State Road 7 Transit Oriented Corridor (TOC)  Regional Water Availability Rule  Limits Biscayne aquifer allocations No Biscayne aquifer allocations Requires alternative water supplies for future demands Water demand projections to quadruple (4.4 MGD - 16 MGD)  Ocean Outfall Rule  Ability to meet Advanced Wastewater Treatment standards by the year 2018  Eliminate discharges by 2025

 Alternative Water Supplies  Reverse Osmosis – Floridan Aquifer  Membrane Bioreactor – Reclamation 3.5 MGD wastewater reclamation plant, expandable to 6 MGD Mandatory reuse zone Wastewater collection improvements Reclaimed water network

RO WTP MBR WRF

 Modification of Activated Sludge Process:  Membranes vs. conventional secondary clarifiers & effluent filters  Small footprint  Biological odor control filter  Consistent reuse quality

InfluentMix LiquorReuse (Effluent)

 In house  Toilet flushing  Process use  Irrigation  Irrigation  Nova Southeastern University  Grande Oaks Golf Course

 Cooling Towers  Nova Southeastern University  Research  University of Florida

 Turf grass management  Water quality  Sodium Adsorption Ratio  Phosphorous  Nitrogen  Chloride  Lined ponds

Parameters of Interest Desired Range for Irrigation Broward County Standards Reuse (Average) Golf Course Lake (Average) Sodium Adsorption Ratio pH (std units) Chloride (ppm) Sodium (ppm) Salt Concentration (ppm) Nitrate (ppm) Total Phosphorous (ppm) Nitrite (ppm) Nitrogen (ppm) TSS (ppm) 1.0 Turbidity (NTU) cBOD (ppm) NA3.83 Total Chlorine (ppm) 10.4

 Irrigation YearReuse Supplied* Estimated Reuse Cost to Customers Estimated Potable Water Estimated Cost Savings MG$4,922$130,28096% MG$64,581$1,689,55496% 2016 (to date) 44.3 MG$9,527$250,65096% *Reuse supplied vs surface water Cost for comparative purposes only

 Indirect Potable  Pilot Biocatalyst/s  Storm water augmentation ?  Direct Potable?

to meeting the water resource needs of our communities. (Source: SFWMD) People recognize and respect city and county borders. Water does not. Intergovernmental communication, cooperation and coordination are vital to meeting the water resource needs of our communities ( Source: SFWMD)