Digestion of poultry manure, deep litter manure, horse manure

In today's use of solid manure in agriculture, its potential is only partly used. Digestion of solid manure means that it can generate considerably more goods. The overall aim and goal of the projects within this area is to, in large scale biogas plants, identify and test technology and system solutions for substrate mixtures with mostly solid manure, also including its digestate handling and use. It is also included to demonstrate that these digestion processes can be operated efficiently.

The work within this area has been divided into two projects:

1. Digestion tests in the RISE test bed “mobile pilot plant for biogas research” of nitrogen rich chicken manure as the main substrate. The digestate was partly processed via separation with a decanter centrifuge followed by concentration via evaporation. This project has been final reported.
   * Project title: Super digestate fertilizer for organic crop production
   * Financer: Vinnova
   * Final report: Digestion of poultry manure with digestate processing in pilot scale tests (RISE Report 2018:39)
    
2. Together with partners in the biogas industry develop source separation in the stable, test robust pre-treatment that enable efficient digestion, and develop efficient use of the fertilizer products. The partners represent the biogas industry, biogas and agricultural R&D as well as decision makers with focus on the reduction of eutrophication from agriculture. This project is ongoing.
   * Project title: Joint solid manure cooperation, transforming a problematic product into a useful resource by digestion
   * Financer: Vinnova (program Challenge-Driven Innovation, stage 1)