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Foss Farm/Foss Biolab

Presentation at Bioseminar, Telemark University College, 21. December 2011. Foss Farm/Foss Biolab. By Knut Vasdal Farmer at Foss farm (knut@vasdal.no). Foss farm. 60 milking cows Organic farming since 1990. Meat and milk. Metan. Manure. food. Metan. N2O. N2O. Fertilizer.

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Foss Farm/Foss Biolab

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  1. Presentation at Bioseminar, Telemark University College, 21. December 2011 Foss Farm/Foss Biolab By Knut VasdalFarmer at Foss farm (knut@vasdal.no)

  2. Foss farm 60 milkingcows Organicfarmingsince 1990

  3. Meat and milk Metan Manure food Metan N2O N2O Fertilizer

  4. Organicfarming • No chemical/synteticalfertilizer • No pesticides

  5. Organicfarming systems • Crop rotation • Ruminant animals • Biologicalnitrification • Soilstructure

  6. Cowmanureslurry 2011 Foss farm

  7. Cowmanureslurry • -Great NH3- emissionafterspreading at fields • -Difficult to utilize in highpopulated area • -Demagesoilstructure • -Conserveweedseeds and patogen spores • -Impossible to spreadexactly • +Costefficentway to spreadonfields

  8. Process line Foss biolab

  9. Foss biolab • Started 2007 • 2010- indoors • 2011 pilot process line for cowmanure • Scientific works • Test lab for full scale full scalebiogas plants • Education

  10. Solid/fibrousfraction • Vermicomposting • Improvesoilstructure • Removestinky smell • Increasemicrobialactivity • Decreaseweedseedsgermination • Remove patogen organism • Stabilizecarbonfraction

  11. Organic matter in thesoil-soilfertility • Water houshold • Microbialactivity • Nutritionexchangecapasity • Aggregat building/soilstructure • Heat absorption • Soilerosionresistance • Carbonimmobilization

  12. Biogas-Foss farm • Bioenergycentral • Hot water for 32 housesneed 384 000kWh • 86 000kWh energy from biogas • Wood chips for rest energydemand • Start up 2012-2013 Foss Housing Area Ca: 20 housing Housingrea Ca: 12 boenheter Bio heatcentral Biogas plant Foss farm JPE/2011

  13. Liquidnitrifiedfertilizer • No N- emission • No N2O-emission • No smell • Spreadingindors or outdoorsevenonsunnydays • No residuesonleaves • No patogens • No weeds • Easy to spreadexactly • Also as leaffertilizer • Availabledirectly as plant nutrition

  14. Chemical changes during AD and DNR process for nitrogen

  15. Physicalchanges during AD and DNR process for sCOD

  16. phdependencyon NH3/NH4+

  17. Physicalchanges during AD and DNR process for pH

  18. Physicalchanges during AD and DNR process for alcalinity

  19. Gas productivityondifferentbatch

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