| abstract |
By reducing the number of viable microbial microorganisms or BSE prion present in the organic material, digested biomass nutrients are refined to commercial grade fertilizers. The organic material is boiled under pressure with lime at a temperature of 100 degC to 220 degC, resulting in hydrolysis of the organic material. The lime added in connection with the stripping of ammonia and the decanting of the organic material precipitates the dissolved orthophosphate and thereby produces a processed organic material containing a reduced number of viable microbial organisms or prion. Furthermore, the process is directed to the processing of animal carcasses or parts thereof, including meat and bone meal, in order to provide an alternative means for processing organic waste material of animal origin, while at the same time making fertilizer production easier. The risk of extending the BSE prion or other prion to animals or humans is thus significantly reduced. The biogas separation system, consisting of an animal object (1), a sludge collection tank (2), a stripping and sanitation tank (12) and at least one fermenter (13, 14, 15), is preferably integrated with animal production operations into an overall concept in which the internal and external performance of animal production is optimized. Internal procedures relate to the quality aspects of the object (1) for animals and include industrial hygiene, animal welfare, gaseous and dust emissions, and food safety. In particular, external performance concerns the production of energy and the emission of nutrients and greenhouse gases into the environment and the sale of high-quality food products. |