2025 Annual Report
Annual Report
January 2026 news from the Sec Gen
News

January 2026 news from the Sec Gen

Dear colleagues and friends,As we begin a new year, I would like to thank you for your continued engagement and trust in ECETOC. 2026 promises to be an exciting and dynamic year, and I am pleased...
ECETOC launches Secondee Programme
News

ECETOC launches Secondee Programme

Looking for an extra challenge? A next step to help develop your career? Consider applying for our Secondee Programme!ECETOC is looking for early-career scientists currently working at a member co...
HSSD Tool

HSSD Tool

This software was developed by a consortium of partners to facilitate the uptake of novel approaches to estimate aquatic threshold concentrations (e.g. the concentration at which 5% of the species are exposed above their EC50, HC5).
The Human Exposure Assessment Tools Database (heatDB)

The Human Exposure Assessment Tools Database (heatDB)

heatdb is a public directory of exposure data sources as well as available tools for exposure
NanoApp

NanoApp

ECETOC’s NanoApp is a tool designed to define the boundaries of sets of similar nanoforms and to generate a justification for the REACH registration.
Targeted Risk Assessment (TRA)

Targeted Risk Assessment (TRA)

The Targeted Risk Assessment (TRA) estimates exposures to workers, consumers and the environment that arise during a series of events.
Chronic fish case studies towards an IATA

Chronic fish case studies towards an IATA

Why?Hazard and safety assessments for the pelagic compartment often rely on in vivo studies using a single fish species, raising ethical concerns and uncertainty in terms of extrapolation....
Estimating the environmental release of Synthetic Polymeric Microparticles from Products

Estimating the environmental release of Synthetic Polymeric Microparticles from Products

Why?REACH restriction: SPM use restricted; emissions reporting required by May 2027. Gap: No analytical methods available to measure SPM emissions. Solution: Draft SPERC-based approac...
Case Studies on Reliability and Relevance Considerations during Validation of NAMs

Case Studies on Reliability and Relevance Considerations during Validation of NAMs

Why?Validation of NAMs is often overlooked despite its importance for regulatory use. Traditional validation methods are less suitable for NAMs, which focus on key events rather than apical...
Task Force
26.05.2015

Adapting Simple Treat for simulating behaviour of chemical substances

Background

In the EU the fate of chemicals in wastewater treatment is currently simulated with SimpleTreat 3.1. RIVM is currently revising SimpleTreat 3.1 for simulating municipal wastewater treatment plants. A recent ECETOC workshop has provided major insights for advancing the modelling assessments of industrial wastewaters based on the revised SimpleTreat model.

Hence it is proposed to establish an advanced simulation approach for industrial wastewater treatment. An advanced SimpleTreat module is developed which can be customized for individual industrial wastewater treatment plants. The development of this tool is to be performed by the Radboud University as contractor. This ECETOC Task Force will supervise the tool development, complement the tool framework and guidance for the use of this tool and develop regulatory support for the advanced simulation approach for chemicals in industrial wastewater treatment.

Duration of the Task Force

Nine months.

 

Terms of Reference for the Task Force

  • Steer the work of the contractor.
  • Develop framework and guidance for the use of the advanced model.
  • Hold a workshop for developing regulatory support for the approach for simulating the fate of chemicals in industrial wastewater treatment.

Terms of Reference for the Contractor

  • Establish possibilities for adapting SimpleTreat for simulating industrial wastewater treatment.
  • Develop model parameterization for realistic simulation of industrial wastewater treatment.
  • Perform testing of advanced model vs current SimpleTreat and, if possible, vs measured data.
  • Perform sensitivity- and uncertainty analysis of the advanced model.

Expected Outcome

  • ECETOC Technical Report: Framework and guidance for applying the advanced modelling.
  • Workshop report / publication: Workshop account of applying the framework and guidance for the advanced modelling (Authorship: ECETOC TF).
  • Technical publication: Modelling work (Authorship: contractor).