Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank

An upgraded integrated fixed-film activated sludge-oxic settling anoxic (IFAS-OSA) system is a new technology for reducing nutrients and excess sludge. The results showed that the average TN removal efficiency of the IFAS-OSA system was gradually increased up to 7.5%, while the PO(4)(–3)-P removal e...

Descripción completa

Detalles Bibliográficos
Autores principales: Fazelipour, Mansour, Takdastan, Afshin, Borghei, Seyed Mehdi, Kiasat, Neda, Glodniok, Marcin, Zawartka, Paweł
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683438/
https://www.ncbi.nlm.nih.gov/pubmed/34921213
http://dx.doi.org/10.1038/s41598-021-03556-6
_version_ 1784617418726834176
author Fazelipour, Mansour
Takdastan, Afshin
Borghei, Seyed Mehdi
Kiasat, Neda
Glodniok, Marcin
Zawartka, Paweł
author_facet Fazelipour, Mansour
Takdastan, Afshin
Borghei, Seyed Mehdi
Kiasat, Neda
Glodniok, Marcin
Zawartka, Paweł
author_sort Fazelipour, Mansour
collection PubMed
description An upgraded integrated fixed-film activated sludge-oxic settling anoxic (IFAS-OSA) system is a new technology for reducing nutrients and excess sludge. The results showed that the average TN removal efficiency of the IFAS-OSA system was gradually increased up to 7.5%, while the PO(4)(–3)-P removal efficiency increased up-to 27%, compared with that of the IFAS system. The COD removal efficiency of the IFAS-OSA system was slightly increased up-to 5.4% and TSS removal efficiency increased up to 10.5% compared with the control system. Biomass yield coefficient (Y(obs)) in the IFAS and IFAS-OSA systems were 0.44 and 0.24 (gr MLSS/ gr COD). Hence, sludge production decreased by 45%. The average SVI was decreased by 48% in IFAS-OSA system compared with IFAS. This study demonstrated the better performance of the IFAS-OSA system compared to that of the IFAS system.
format Online
Article
Text
id pubmed-8683438
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-86834382021-12-20 Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank Fazelipour, Mansour Takdastan, Afshin Borghei, Seyed Mehdi Kiasat, Neda Glodniok, Marcin Zawartka, Paweł Sci Rep Article An upgraded integrated fixed-film activated sludge-oxic settling anoxic (IFAS-OSA) system is a new technology for reducing nutrients and excess sludge. The results showed that the average TN removal efficiency of the IFAS-OSA system was gradually increased up to 7.5%, while the PO(4)(–3)-P removal efficiency increased up-to 27%, compared with that of the IFAS system. The COD removal efficiency of the IFAS-OSA system was slightly increased up-to 5.4% and TSS removal efficiency increased up to 10.5% compared with the control system. Biomass yield coefficient (Y(obs)) in the IFAS and IFAS-OSA systems were 0.44 and 0.24 (gr MLSS/ gr COD). Hence, sludge production decreased by 45%. The average SVI was decreased by 48% in IFAS-OSA system compared with IFAS. This study demonstrated the better performance of the IFAS-OSA system compared to that of the IFAS system. Nature Publishing Group UK 2021-12-17 /pmc/articles/PMC8683438/ /pubmed/34921213 http://dx.doi.org/10.1038/s41598-021-03556-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Fazelipour, Mansour
Takdastan, Afshin
Borghei, Seyed Mehdi
Kiasat, Neda
Glodniok, Marcin
Zawartka, Paweł
Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title_full Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title_fullStr Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title_full_unstemmed Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title_short Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank
title_sort efficiency studies of modified ifas-osa system upgraded by an anoxic sludge holding tank
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683438/
https://www.ncbi.nlm.nih.gov/pubmed/34921213
http://dx.doi.org/10.1038/s41598-021-03556-6
work_keys_str_mv AT fazelipourmansour efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank
AT takdastanafshin efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank
AT borgheiseyedmehdi efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank
AT kiasatneda efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank
AT glodniokmarcin efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank
AT zawartkapaweł efficiencystudiesofmodifiedifasosasystemupgradedbyananoxicsludgeholdingtank

Ejemplares similares