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Managing Excess Nutrients: Innovative Solutions for Manure Management

Learn about various techniques for managing excess nutrients from manure & the factors influencing decision-making. Explore traditional vs innovative technologies, including physical, chemical, & biological solutions. Uncover methods like anaerobic digestion, composting, gasification, and more. Discover how to optimize land application, utilize cover crops, crop rotations, and organic fertilizers. Delve into the challenges and considerations of manure management, such as water & air quality, financial investments, and regulatory requirements. Explore the importance of soil quality, crop requirements, and best practices for sustainable nutrient utilization.

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Managing Excess Nutrients: Innovative Solutions for Manure Management

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  1. What Are We To Do With All Of This Stuff? Jeff Porter Environmental Engineer Manure Management Team USDA-NRCS

  2. What is the problem? Excess Nutrients Too Many Animals Distribution and proper utilization of nutrients!!!

  3. How To Decide • Landowner Goals and Objectives • Regulatory Requirements • Operational Size • Operation Type • Available Application Area • Required Application Area • Distance From Water Bodies • $$

  4. Manure Management Options • Agronomic Practices • Land Application • Cover Crops • Crop Rotation • Biological • Chemical • Physical • Other

  5. Land Application • Currently only 5% of cropland receives manure application • Still very important option • Utilize when possible • Importance of soil quality, crop requirements and manure tests • Using some of the other options might increase land application base

  6. Traveling Gun Injection System Solid Manure Spreading

  7. Cover Crops Crop Rotations

  8. Biological • Anaerobic Digestion • Aerobic Treatment • Anaerobic Treatment • Composting

  9. Covered Lagoon Complete Mix Engine Plug Flow Boiler

  10. Lagoon Dual System

  11. Windrow Rotary Drum Passive Aeration Marketable Product

  12. Chemical • Coagulation/Flocculation • Manure Amendments • Thermo-chemical

  13. Polymer Test Sampling Ferric Sulfate Treated Dairy Manure Metal Salt

  14. Manure Amendments

  15. Thermo - Chemical • Incineration • Fuel + Oxygen  Heat (~3,600 F) • Gasification • Fuel + Limited Oxygen  Fuel Gas (syngas) + Heat + Char + Tar (1,100 – 1,800 F) • Pyrolysis • Fuel + Heat  Fuel Gas (oil products) + Char + Tar (390 – 1,100 F)

  16. Burner and Boiler Electricity generating turbine 4,500 Tank Trucks of Manure/Year; Reduced to 90 Trailers of Ash

  17. Gasification Unit in California Mortality Gasification (North Carolina) Gasification Unit in West Virginia Gasification Unit in South Carolina

  18. Biochar Syngas Pyrolysis Unit Bio-oil

  19. Physical • Solid – Liquid Separation • Fractionization • Pelletizing

  20. Inclined Screen Non-Enhanced Separation Screw Press Gravity Settling Basin

  21. Enhanced Separation Settling Basins Bio-bag Rotary Press Belt Press

  22. • Separate litter into course and fine fractions. • Fine fraction: mostly manure, high nutrient, 1/3 volume • Course fraction: mostly shavings/feathers, low nutrient, 2/3 volume

  23. Organic Fertilizer Swine Pellets Pellet Mill Poultry Pellets

  24. Other Options • Feed Management • Early Slaughter • Manure Transfer • Animal Transfer • Other products

  25. Other Products Fiber board Manure Dried Solids Glue Plastic Paint Etc.

  26. Traditional Verses Innovational Technologies Traditional Manure Treatment Innovative Treatment Technologies Super Soil Clinton, NC

  27. Conclusions • There are several options for addressing manure distribution and application management issues • There is no silver bullet to address manure issues • Option selections are dependent on a number of factors such as: objectives, land availability, nutrient loads, available markets • Several alternatives may need to be combined to meet the desired outcome • Water and air quality concerns also need to be addressed when dealing with manure management issues • Most options require significant financial investment

  28. The End Questions ?

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