Assessment of organic constituents in sewage sludge

A standardized evaluation concept based on human toxicity, ecotoxicity and soil related data has been developed for the assessment of pollutants in se wage sludge. This assessment concept for different compounds is applicable using evaluation steps that are comparable and transparent based on a class ification system. All compounds assessed here were assigned to three groups : pollutants of primary ;relevance, pollutants of secondary relevance and s uch, on which more information is necessary for evaluation. For the purpose of comparing the evaluation concept with results from some investigations under field and laboratory conditions degradation, sorption, retardation an d plant transfer data for LAS are presented and discussed.