Changes in estrogenic and androgenic activities ant different stages of treatment in wastewater treatment works

摘要

Estrogenic and androgenic activities of wastewater were determined during treatment in five wastewater treatment works (WWTWs) in the Untied Kingdom. With one exception, both estrogenic and androgenic activities decreased markedly as wastewater progressed through the plants; removal rats were generally 70/100 or higher, sometimes reaching 100/100. Most of the reduction in activity occurred during secondary(biological) treatment. In both influents and effluents, estrogenic and androgenic activities were appreciably lower in samples collected in August, when the amount of rain had been substantial, compared with samples collected in April and May.