<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of this study was to determine the effect of flowback water on an activated sludge biocenosis during municipal wastewater treatment in the sequencing batch reactors (SBRs). Two series were performed. In series 1, only municipal wastewater was treated, whereas in series 2, municipal wastewater with pre-treated flowback water was used. Flowback water constituted 3-5% of the influent and was introduced to the SBRs twice per week. Introducing flowback water did not decrease the quality of effluent from the SBRs. However, the composition of the activated sludge biocenosis differed between series, <italic>ie</italic> the biodiversity of protozoa and the relative abundance of microfauna in functional groups changed after flowback water addition. Polymerase chain reaction - denaturing gradient gel electrophoresis (PCR-DGGE) showed that the ammonia oxidizers community responded faster to flowback water addition than the total bacterial community and remained relatively stable during treatment. However, after 9 weeks of exposure to flowback water, ammonia oxidizing bacteria (AOB) biodiversity decreased. This suggests that prolonged exposure could cause nitrification problems, leading to deterioration in effluent quality</p></abstract>

The aim of this study was to determine the effect of flowback water on an activated sludge biocenosis during municipal wastewater treatment in the sequencing batch reactors (SBRs). Two series were performed. In series 1, only municipal wastewater was treated, whereas in series 2, municipal wastewater with pre-treated flowback water was used. Flowback water constituted 3-5% of the influent and was introduced to the SBRs twice per week. Introducing flowback water did not decrease the quality of effluent from the SBRs. However, the composition of the activated sludge biocenosis differed between series, ie the biodiversity of protozoa and the relative abundance of microfauna in functional groups changed after flowback water addition. Polymerase chain reaction - denaturing gradient gel electrophoresis (PCR-DGGE) showed that the ammonia oxidizers community responded faster to flowback water addition than the total bacterial community and remained relatively stable during treatment. However, after 9 weeks of exposure to flowback water, ammonia oxidizing bacteria (AOB) biodiversity decreased. This suggests that prolonged exposure could cause nitrification problems, leading to deterioration in effluent quality

Impact of Flowback Water on Activated Sludge Biocenosis During Municipal Wastewater Treatment

Environmental Biotechnology Department, Silesian University of Technology, ul. Akademicka 2, 44-100 Gliwice, Poland, phone +48 32 237 26 94; fax +48 32 237 29 46

Department of Tourism, Recreation and Ecology, University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 5, 10-957 Olsztyn, Poland, phone +48 89 524 51 07, fax +48 89 523 32 90

Department of Environmental Biotechnology, University of Warmia and Mazury in Olsztyn, ul. Słoneczna 45G, 10-718 Olsztyn, Poland, phone/fax +48 89 523 41 45

Ecological Chemistry and Engineering S

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The aim of this study was to determine the effect of flowback water on an activated sludge biocenosis during municipal wastewater treatment in the sequencing...

Impact of Flowback Water on Activated Sludge Biocenosis During Municipal Wastewater Treatment

Publié en ligne: 22 janv. 2016

Pages: 611 - 624

DOI: https://doi.org/10.1515/eces-2015-0036

Mots clés
flowback water, SBR, activated sludge microfauna, AOB community, PCR-DGGE

© 2015 Aleksandra Ziembińska-Buczyńska et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Impact of Flowback Water on Activated Sludge Biocenosis During Municipal Wastewater Treatment

Publié en ligne: 22 janv. 2016

Pages: 611 - 624

DOI: https://doi.org/10.1515/eces-2015-0036

Mots clésflowback water, SBR, activated sludge microfauna, AOB community, PCR-DGGE

© 2015 Aleksandra Ziembińska-Buczyńska et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
flowback water, SBR, activated sludge microfauna, AOB community, PCR-DGGE