Effects of 2-chlorophenol and 2,4,6-trichlorophenol on an activated sludge sequencing batch reactor

Doskaliyev, D. and Poulopoulos, S. G. and Yeshmuratov, A. and Aldyngurova, F. and Zorpas, A. A. and Inglezakis, V. J. (2018) Effects of 2-chlorophenol and 2,4,6-trichlorophenol on an activated sludge sequencing batch reactor. Desalination and Water Treatment, 133. pp. 283-291. ISSN 1944-3986

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    Abstract

    In 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.

    ORCID iDs

    Doskaliyev, D., Poulopoulos, S. G., Yeshmuratov, A., Aldyngurova, F., Zorpas, A. A. and Inglezakis, V. J. ORCID logoORCID: https://orcid.org/0000-0002-0195-0417;