R. Leviminzi et al., DECOMPOSITION IN SOIL OF ANAEROBICALLY DIGESTED OLIVE MILL SLUDGE, Journal of environmental science and health. Part A: Environmental science and engineering, 30(7), 1995, pp. 1411-1422
A laboratory experiment was performed during a 120-day incubation peri
od in order to evaluate changes in the properties of soil amended with
the same waste water from olive-oil processing, either untreated (UVW
) or anaerobically digested (ADVW). The results indicate that organic
and inorganic component levels of the soil amended with ADVW do not di
ffer markedly from those of the control. On the contrary, the contents
of the same components for the soil amended with UVW resulted much hi
gher, especially in the first days after the addition and sometimes al
so at the end of the experimental period. A germination test carried o
ut on the soil amended with ADVW did not show any toxicity, while the
soil amended with UVW still showed an inhibitory effect after thirty d
ays, after which the toxicity disappeared completely.