7 pages, 3 figures, 3 tables, 9 references. Trabajo presentado al 9th International Symposium on Environmental Pollution and Its Impact on Life in the Mediterranean Region (Mesaep), celebrado del 4-9, octubre, 1997 en S. Agnello di Sorrento, Italia.Existing laws in Italy propose olive mill pomaces (OMP), produced by the two
phase system, as a soil amendant. The direct supply of such a raw material poses sorne problems
due to the rainy season and its phytotoxicity. The bioremediation of olive mill pomaces can be an
useful and economic technology to overcome those backdowns. Composting has been performed
in a forced aerated static pile, mixing OMP with chopped wheat straw. During the process
moisture content, pH, EC, organic carbon, nitro gen and phytotoxicity were determined. The
thermophilic phase lasted 60 days. The phytotoxicity disappeared at the end of the thermophilic
phase. The final product has been examined to determine its physical, chemical and biological
characteristics. At the end of the process a C/N = 31 was determined. This high value depends on
the presence ofthe grinded stones, hardly to be microbiologically degraded.Peer reviewe
