Doskaliyev D.Poulopoulos S.G.Yeshmuratov A.Aldyngurova F.0000-0002-8154-5656Zorpas, AntonisAntonisZorpasInglezakis V.J.2024-12-172024-12-17201810.5004/dwt.2018.23065https://kypseli.ouc.ac.cy/handle/11128/8478In the work, the effect of 2-chlorophenol and 2,4,6-trichlorophenol on the performance of a sequencing batch reactor operated with suspended municipal recycle activated sludge (RAS) in terms of total carbon and total nitrogen removal is presented. The total carbon removal achieved ranged in 80%�100% and total nitrogen removal in 10%�84%. The results showed that chlorophenols did not inhibit either the activated sludge growth or the total carbon removal significantly. However, inhibition is observed in total nitrogen removal. 2-chlorophenol inhibited the ammonium oxidation (nitrification) while such an effect was not observed in the case of 2,4,6-trichlorophenol indicating that the later inhibits the ammonification step. Moreover, the results indicated that total removal of both chlorophenols was achieved during the first day of the processing. � 2018 Desalination Publications. All rights reserved.enArticle