Policy paper: Turning Pig Manure from Waste to Asset: Best available technologies to reduce nutrients leaching to the Baltic Sea
Manure based biogas production has many benefits; one of them is the potential to reduce nutrient loads to the Baltic Sea from intensive livestock production. The positive societal and environmental effects of manure based biogas justify nationally tailored financial incentives and public investments in relevant infrastructure in order to ensure the profitability for the investors. The paper outlines the main positive effects of manure based biogas, the prerequisites regarding management of digestate and the initiatives needed by farmers, business and policy makers.
Two research studies have identified technologies for handling pig manure from intensive pig production in the Baltic Sea region in an optimal way. The technologies are selected with the main objective to reduce the pollution of nutrients to the aquatic environment, but the benefits of using the recommended setup of technologies are more diverse.
The studies conclude that nutrient discharges from intensive pig production can be reduced significantly if biogasification of pig manure is used in combination with separation technologies, and proper timing and technologies for spreading the digested manure. An effective utilization of the nutrients in manure for crop cultivation depends both on the setup of technologies and on management practices.
The policy paper contains key recommendations to policy makers, pig farmers/biogas plant owners and technology suppliers.
Click here to see the policy paper
Read the background reports at www.balticsea2020.org
Best Available Technologies for Manure Treatment (Foged 2010),
Best Available Technologies for Pig Manure Biogas Plants in the Baltic Sea Region (Frandsen et al. 2011)