| 摘要 |
Disclosed are a process and an apparatus for compositing organic waste in two consecutive retting steps, the first of which is anaerobic and the second aerobic. In each step, the material to be decomposed is aerated with fresh air under pressure and the resulting spent waste gases are aspirated as spent air. The spent air (AL2) obtained from the second step of the process-the post-decomposition or retting step is mixed with fresh air (FL) used in the decomposition or first step, as shown in the drawing. The invention is particularly intended for use in with the so-called "retting processes" wherein fibers are soaked or exposed to moisture to promote loosening of the fiber from woody tissues by bacterial action. Generically, the term implies a rotting or injuring by exposure to moisture. The retting process can also involve a chemical treatment and its main object is to make possible gathering and baling of black inner fibers; as defined in Webster's "Third New International Dictionary.
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