Modern Composting Technologies. Variety is spice of in-vessel life

oday, there are in-vessel systems on the market to satisfy just about any processing need, whether based on scale, climate, cost or type of feedstock. These systems, so called bioreactors, are either vertical or horizontal. The latter is subdivided into horizontal reactors using channels, cells, containers and tunnels. Another type of vessel is the rotating drum, which is typically used ahead of the first phase of composting to size reduce and mix feedstocks, and initiate the composting process. In addition to the structural differences, composting plants can be divided into continuous and discontinuous operations or systems. An additional classification, based on the presence or absence of movement of the material in the reactor, is static bioreactors and dynamic bioreactors.