betsy-jeff penn 4-h educational center: case study for the upgrade of a recirculating sand filter...
TRANSCRIPT
![Page 1: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/1.jpg)
Betsy-Jeff Penn4-H Educational Center:
Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters
by
Gary S. MacConnell, PE
Zack L. Fuller, PE
![Page 2: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/2.jpg)
• NPDES Permit• Permitted Flow: 8,400 GPD• Limits:
BOD 5 TSS
Monthly Ave 30.0 mg/l 30.0 mg/l
Daily Max 5.0 mg/l 45.0 mg/l
NH3-N Fecal Coliform
Monthly Ave 22.0 mg/l 200 / 100 ml
Daily Max N/A 400 / 100 ml
Original PermitOriginal Permit
![Page 3: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/3.jpg)
Original Treatment TrainOriginal Treatment Train
• Flow Diagram
Dosing Chamber with Siphon
Septic Tank
Sand Filter
Recirculation Tank
UV Dosing Tank
UV Disinfection
Discharge to Carroll Creek
Flow Splitting Device
![Page 4: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/4.jpg)
• Dosing Bell - Not Functional
• Sand Filter - Structural Integrity
• Spray Distribution - Un-Even
• Bed – Rocks on Top, Not Able to Clean
• Sand Media - Clogged
• Under Drains – Clogged
DeficienciesDeficiencies
![Page 5: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/5.jpg)
![Page 6: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/6.jpg)
![Page 7: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/7.jpg)
• Aerosols
• Health Concerns
• Leaking Sand Filter
• Treatment Level
• Aesthetics
• Rain/Freezing
Problems / ConcernsProblems / Concerns
![Page 8: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/8.jpg)
Construction IssuesConstruction Issues
• Flow Diagram
Old Septic / Dosing Tank Septic/
Recirc Tank
Septic/ Recirc Tank
UV Disinfection
UV Dosing Tank
Filter Dosing Tank
5
Pretreatment Pods
15 Pretreatment Pods
Discharge to Carroll Creek
![Page 9: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/9.jpg)
![Page 10: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/10.jpg)
![Page 11: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/11.jpg)
![Page 12: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/12.jpg)
![Page 13: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/13.jpg)
• Uniform Media with Larger Pore Space
• Enclosed: No Aerosols, Rain, Freezing, Dust
• No Algae
• Less Maintenance
• Media Inexpensive and Easy to Replace
Benefits of Synthetic Benefits of Synthetic Media FiltersMedia Filters
![Page 14: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/14.jpg)
• NPDES Permit
• Permitted Flow: 13,100 GPD
• Limits:
BOD 5 TSS
Monthly Ave 30.0 mg/l 30.0 mg/l
Daily Max 45.0 mg/l 45.0 mg/l
NH3-N Fecal Coliform
Monthly Ave 12.0 mg/l 200 / 100 ml
Daily Max N/A 400 / 100 ml
Modified PermitModified Permit
![Page 15: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/15.jpg)
BOD5 TSS
High 10 mg/l 4.0 mg/l
Low 2.0 mg/l ≤ 2.0 mg/l
Average 3.0 mg/l 2.0 mg/l
NH3-N Fecal Coliform
High 30.0 mg/l* 2.0 / 100 ml
Low 0.30 mg/l ≤1.0 / 100 ml
Average 1.50 mg/l 1.0 / 100 ml
PerformancePerformance
* Reading taken shortly after project start up.
![Page 16: Betsy-Jeff Penn 4-H Educational Center: Case Study for the Upgrade of a Recirculating Sand Filter Using Synthetic Media Filters by Gary S. MacConnell,](https://reader036.vdocuments.mx/reader036/viewer/2022062620/551b64f2550346ae7a8b5cbb/html5/thumbnails/16.jpg)