Manufacturing procedure for compost from green waste uses calcium and magnesium additive to absorb metal trace elements and organic trace compounds

摘要

The manufacturing procedure consists of mixing green waste from private sources and collectives with a calcium-magnesium additive to yield a stable product rich in compounds that absorb metal trace elements (MTE) and organic trace compounds such as PCBs. The composting process includes a degradation stage to ensure the hygiene and stability of the organic material in it, and a maturation stage that permits a significant lowering of the moisture content so that it gets down to 40 per cent and ensures sufficient decomposition of the organic material. The compost is sieved prior to use.