Survival of Salmonellas and Ascaris Eggs During Sludge Utilization in Forestry

Sludge utilization in forestry is increasing because many municipal sewage treatment plants have difficulties to dispose of their sludge. If it cannot be incinerated or dumped and if it is not accepted by farmers the utilization in forestry is often the ultimate solution. This is especially true for such communities who are in possession of own forest areas where they can act own their own discretion. This of course creates hygienic problems because usually it is not possible to till the sludge into the soil between the trees. Therefore contacts of man and animals with infected sludge in forests are most likely.