1. Authored by Matthew S Love, PE Coauthored by Jeffrey S Lowe, PE RECLAIMED WATER STORAGE: A DIRTY LITTLE SECRET

2. Injection Well, RIBs and Surface Water Discharge Storage & Disposal Options: Storage TanksStorage Ponds

3. What’s The Problem With Ponds?  Algae  Florida Fine Sands (Sugar Sands)  Wildlife (Fish, Turtles, Duckweed)

4. Regardless The Process? Facility Capacity (MGD) Type of Process Pond Storage NWRF Manatee County 7.5 MTMADF Carrousel 232 MG Unlined SEWRF Manatee County 11 MTMADF Carrousel 352 MG Unlined SWWRF Manatee County 15 AADF Conventional 144 MG Unlined EWRF City of Venice 6 MTMADF Bardenpho 35 MG Lined NWRF SEWRF SWWRF EWRF

5. Steps Taken To Clean Up The Pond Algal Enumeration & Particle Size Distribution Pilot Testing of Filtration Equipment Process Improvements Intake Structure Improvements

6. Algal Enumerations 80% - Blue-Green Algae or Cyanobacteria (< 10 micron) 20% - Yellow-Green Algae, Green Algae, Diatoms & Flagellates Algal Zone in Top 18” N & P

7. Particle Distribution – The Typical Florida Sands  80% < 275 microns  60% < 200 microns  25% < 150 microns  10% < 75 microns

8. Residential Irrigation < 200 micron Micro-irrigation < 75 micron Targeted 25 micron Average Capture of 65% Solids

9. Pilot Testing Different Technologies Salsnes Filter  Gravity Filter  Synthetic Mesh Media  Applications in Pretreatment, Fisheries, Pulp and Paper

10. Pilot Testing Different Technologies Amiad Filter  Pressure Filter with Stainless Steel Media  Needed Pressure Required Upgrades to Remote Pump Stations  Can Not Return Waste Backwash Water Directly to Ponds

11. Pilot Testing Different Technologies Nova Disk Filter  Gravity Filter with Stainless Steel Media  Met Removal Targets at 25 microns NWRF SWWRF

12. Process Improvements BIOLOGICAL TREATMENT TERTIARY FILTRATION DISINFECTION RCW STORAGE POND RCW DISTRIBUTION RCW SYSTEM WASTEWATER PERMIT COMPLIANCE ZONE

13. Intake Structure Improvements Passive Wedge Wire Screens Concrete Apron & Sump Decreased Grating Size: 2” to 1” Opening

14. Questions?