Bio-fertiliser
BIOGEN’s integrated AD process produces around 30,000 tonnes of a nutrient-rich liquid bio-fertiliser that is used as a valuable soil conditioner as it includes not only Nitrogen, Phosphate and Magnesium but a good organic blend of nutrients and matter.
The AD plant includes final storage tanks for the fertiliser so that several months of production can be stocked and can be fed onto the fields at the right time for the crops.
The bio-fertiliser avoids the need for purchasing fossil fuel based fertilisers potentially making significant savings for farmers. This is especially so as the cost of nitrogen has increased with the oil price and is set to increase dramatically over the next few years.
Key benefits:
- High nutrient value - the exact make-up of fertiliser will vary depending on the nature of the feedstock, however it has a high nutrient value, generally around:
- 4-5kg/m3 of nitrogen
- 1-2kg/m3 of phosphate
- 1-2kg/m3 of potash
- 2kg/m3 of magnesium
- Better crop compatibility - nitrogen resulting from AD occurs in a more readily degradable bacterial floc thus making the nitrogen more available to the crop and enhancing its fertilising properties
- Reduced odour - compared to spreading of slurry, odour is reduced by up to 80% and, with a lower viscosity, it is also easier to spread
- Increased stability, reduced BOD, - the biological treatment of the waste makes the fertiliser more stable and reduces the biological oxygen deficiency (BOD) and is therefore potentially far less polluting
- Improved soil management - the process produces an ammonium converted fertiliser that is sanitised so that it reduces leaching and eliminates pathogens and seeds
