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A Constructed Wetlands to Enhance Final Treatment of Waste Water from a Poultry Processing Plant

A Constructed Wetlands to Enhance Final Treatment of Waste Water from a Poultry Processing Plant. J. B. Hess 1 , J.P. Blake 1 , K.S. Macklin 1 , T. Smith 2 , D. Toddes 2 and T. Esslinger 2 , 1 Poultry Science Dept. Auburn University, AL and 2 Keystone Foods, Eufaula, AL. Poultry Processing.

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A Constructed Wetlands to Enhance Final Treatment of Waste Water from a Poultry Processing Plant

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  1. A Constructed Wetlands to Enhance Final Treatment of Waste Water from a Poultry Processing Plant J. B. Hess1, J.P. Blake1, K.S. Macklin1, T. Smith2, D. Toddes2 and T. Esslinger2, 1Poultry Science Dept. Auburn University, AL and 2Keystone Foods, Eufaula, AL

  2. Poultry Processing • Alabama – 1 Billion Birds/Year, 125 Million at any given time • Alabama – 26 Processing Plants • Processing – Uses Lots of Water • Sources – Municipal, Well

  3. Poultry Processing • Environmental Issues • Water Usage • 4-9 Gallons/Bird • Waste Disposal • Solids – Offal • DAF Skimmings • Liquids, Biosolids

  4. Keystone Foods Eufaula • Broiler Integration • 980,000 Broilers/Week • Primary Processing – 200,000 broilers/Day • Further Processing – Breading and Cooking

  5. Processing Waste • Offal – Dewatered • Skimmings – Dewatered • Floculant • Processing Wastewater • Biosolids

  6. Pretreatment • Rotary Drum • – Large Solids • Dissolved Air Flotation • – Solids, Fats and Oils • Products Go to Rendering • American Proteins – Cuthbert, GA • Recycled – Animal Feed, Biodiesel

  7. Pretreatment

  8. Rendering • American Proteins • Offal Picked Up Continuously • Pressure Cooked • Animal Protein Meals • Fats – Biodiesel, Animal Feed

  9. Modified Sequence Batch Reactor • Anoxic • Oxygenated

  10. Secondary Treatment • Clarifiers • Holding Pond

  11. Biosolids • From Clarifiers • Beneficial use Permit • Contract with Farmer • Spread on Hay Fields

  12. Constructed Wetlands • Free Water Surface Wetlands • 16 Cells – 3.2 Acres • 55 Acre Site • 90% of Wastewater

  13. Constructed Wetland Cells • 11 Days Transit Time • First Six Cells – Cattails • Three Feeder Lines • Second Six Cells – Cattails • Three Feeder Lines • Four Cells – Wild Rice, Bulrush, Cattails and Giant Reed

  14. Plantings Used • Cattails • Typhalatifolia

  15. Plantings Used • Bulrush • Scirpus

  16. Plantings Used • Giant Reed • Phragmites

  17. Plantings Used • Wild Rice • Zizaniaaquatica

  18. Plantings Used • Water Hyacinths • Eichhornia • Algae Control • Additional Nutrient Removal • Temporary - Removed

  19. Final Cleaning Steps • Microscreens – Remove Plant Material • Rapid Infiltration Beds • Sand Infiltration Bed

  20. Additional Option • Spray Fields • Adjacent to the Processing Plant • 221 Acres • Hay Harvested • Winter Crop • 10% of Total

  21. Nutrient Results

  22. Conclusions • Mechanical Waste Handling Accomplishes Substantial Nutrient Removal • Constructed Wetlands Provides Final Polishing • Constructed Wetlands Provides Additional Cleansing Potential

  23. A Constructed Wetlands to Enhance Final Treatment of Waste Water from a Poultry Processing Plant J. B. Hess1, J.P. Blake1, K.S. Macklin1, T. Smith2, D. Toddes2 and T. Esslinger2, 1Poultry Science Dept. Auburn University, AL and 2Keystone Foods, Eufaula, AL

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