This Test Guideline describes a method to assess effects of a test chemical on the phagocytotic activity of activated sludge containing protozoan organisms under defined conditions in the presence of different concentrations of the test chemical. The principle of biological sewage-treatment plants (STP) is to transform the organic matter of incoming waste-water in microbial biomass, which in turn is separated from the liquid yielding a purified effluent. The purpose of the test is to provide a means to record effects of test chemicals on ciliated protozoa in sewage treatment plants, which due to their grazing on bacteria considerably contribute to the functioning of STPs.
Test No. 244: Protozoan Activated Sludge Inhibition Test
Report
Share
Facebook
Twitter
LinkedIn
Abstract
In the same series
-
Report2 July 202632 Pages
-
2 July 202615 Pages
-
25 June 202511 Pages
-
25 June 202522 Pages
-
25 June 202524 Pages
Related publications
-
2 July 2026115 Pages
-
Report2 July 202632 Pages
-
2 July 202615 Pages
-
Report
Assay for the Detection of Glucocorticoid Receptor Agonist and Antagonist Activity of Chemicals
2 July 202634 Pages -
Report
Assays addressing the Adverse Outcome Pathway key event on covalent binding to proteins
2 July 202663 Pages -
Report
Assays addressing the Adverse Outcome Pathway Key Event on Keratinocyte activation
2 July 202698 Pages