[Joerg]

So, I presume that this question is then targeting the organic fraction of MSW, so organics extracted from a mixed MSW stream.
Besides Plug-flow AD high-solids batch AD is another process type that has been employed on such feedstocks.

Low-solids AD is also a viable process but it requires rigorous pre-treatment of the OFMSW to move it from a physically contaminated and inhomogeneous feedstock into a homogeneous and ‘clean’ bio-slurry ready for digestion.

A caution: do not only think about the generated biogas for beneficial use but also the end-use of the digester effluent. For example, it is prohibited in Europe to land-apply organics derived from a mixed MSW stream.