In the wastewater treatment plant, contaminants including nanomaterials are separated from the wastewater in several stages. According to laboratory tests, the most common nanomaterials such as silicon dioxide, titanium dioxide, silver or zinc compounds are effectively removed from the wastewater by 90-95%. Only a small fraction of nanomaterials remains in the treated water. The majority of the removed nanomaterials are found in the sewage sludge, which is further treated separately.
- For more information on this topic, please refer to the article in our cross cutting section “Nanomaterials in the wastewater treatment plant”.