Assessment of the aftereff ects of long-term use of high doses of sewage sludge through soil bioassay

Lunev Michail Ivanovich, Baranov Alexander Pavlovich

An ecotoxicological assessment of the aftereffect of the introduction of high doses of sewage sludge (SS) under agricultural crops is given The organisms included in the battery of bio-tests (plant, enhytreid, ciliates), in their vital signs, showed a positive effect on the introducetion of high doses of SS. Studies on the assessment of the reaction of cultures belonging to the same taxonomic groups, but already in the field experience, also showed an improvement in their living conditions, confirming the possibility of extrapolating the bioassay results for the prediction of the development of experimental organisms in real conditions

Keywords:soil, sewage sludge, remediation, bioassay, heavy metals, chronic pollution