The Organisation for Economic Cooperation and Development (OECD) has published a report that summarises responses to a survey it ran in 2012 on wastewater treatment. In it the OECD reveals that a number of different countries are concerned about nanoparticle presence in wastewater, although very few have begun projects to investigate the matter further.
In October 2011 Members of the OECD Task Force for Exposure Assessment (TFEA) and the OECD Task Force for Pollutants Release and Transfer Registers (TFPRTR) ‘agreed to launch a joint project to compile information on the current methodologies, tools and models used for estimating substance-specific removal/emissions from wastewater treatment systems’; a survey was then put to members of both Task Forces asking them to:
- identify and describe models used for regulatory assessment purposes
- describe issues associated with the models
- describe various completed or on-going project to address these issues
- provide a range of measured removal/emission data
Three respondents indicated that nanoparticles are a priority with respect to improving estimates of removal/emissions from wastewater treatment systems – this was the highest value on that particular question. Canada, the US and the UK indicated that nanoparticles were an issue that needed looking at, but none of them indicated that they had begun any relevant projects. According to the survey, work on the matter had only been undertaken by OECD WPMN SG8, which is gathering information on the topic, while the Netherlands and Germany are ’considering adding relevant process descriptions for nanoparticles’ as part of their revision of a wastewater treatment program.
Follow this link to read the full report.