If you are mulling over the possibility of composting solid organics, please do  check with any composting authority such as the Composting Association of the UK, Cornell University, or the US Composting Council.  There you will learn that the ideal dry matter content for successful composting of any organic material  is 35%.   If, in your operation, the dry matter is lower, you will also find an abundance of information about suitable amendments and much, much more.   Good information is at hand, so seek it out.  It goes with out saying, if XACT can be of any help, please feel free to give us a shout.  Many thanks.  D