Modelling Analysis of Sewage Sludge Amended Soil

Publikation: Bog/antologi/afhandling/rapportRapportRådgivning

  • P. B. Sørensen
  • L. Carlsen, Danmark
  • J. Vikelsøe, Danmark
  • A. G. Rasmussen, Danmark
  • Afdeling for Terrestrisk Økologi
The topic is risk assessment of sludge supply to agricultural soil in relation to xenobiotics. A large variety of xenobiotics arrive to the wastewater treatment plant in the wastewater. Many of these components are hydrophobic and thus will accumulate in the sludge solids and are removed from the plant effluent. The focus in this work is the top soil as this layer is important for the fate of a xenobiotic substance due to the high biological activity. A simple model for the top soil is used where the substance is assumed homogeneously distributed as suggested in the European Union System for the Evaluation of Substances (EUSES). It is shown how the fraction of substance mass, which is leached, from the top soil is a simple function of the ratio between the degradation half lifetime and the adsorption coefficient. This model can be used in probabilistic risk assessment of agricultural soils and different examples are shown using a Bayesian type of modelling approach.
ForlagNational Environmental Research Institute
Antal sider40
StatusUdgivet - 2001
SerietitelNERI Technical Report

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