Cargando…

Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor

In this paper, refined sugar wastewater (RSW) is treated by electrodialysis (ED) coupled with an upflow anaerobic sludge blanket (UASB) and membrane bioreactor (MBR). The salt in RSW was first removed by ED, and then the remaining organic components in RSW were degraded by a combined UASB and MBR sy...

Descripción completa

Detalles Bibliográficos
Autores principales: Xu, Shichang, Zhao, Han, Xie, Lixin, Wang, Keqiang, Zhang, Wen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10224370/
https://www.ncbi.nlm.nih.gov/pubmed/37233588
http://dx.doi.org/10.3390/membranes13050527
_version_ 1785050163043106816
author Xu, Shichang
Zhao, Han
Xie, Lixin
Wang, Keqiang
Zhang, Wen
author_facet Xu, Shichang
Zhao, Han
Xie, Lixin
Wang, Keqiang
Zhang, Wen
author_sort Xu, Shichang
collection PubMed
description In this paper, refined sugar wastewater (RSW) is treated by electrodialysis (ED) coupled with an upflow anaerobic sludge blanket (UASB) and membrane bioreactor (MBR). The salt in RSW was first removed by ED, and then the remaining organic components in RSW were degraded by a combined UASB and MBR system. In the batch operation of ED, the RSW was desalinated to a certain level (conductivity < 6 mS·cm(−1)) at different dilute to concentrated stream volume ratios (V(D)/V(C)). At the volume ratio of 5:1, the salt migration rate J(R) and COD migration rate J(COD) were 283.9 g·h(−1)·m(−2) and 13.84 g·h(−1)·m(−2), respectively, and the separation factor α (defined as J(COD)/J(R)) reached a minimum value of 0.0487. The ion exchange capacity (IEC) of ion exchange membranes (IEMs) after 5 months of usage showed a slight change from 2.3 mmol·g(−1) to 1.8 mmol·g(−1). After the ED treatment, the effluent from the tank of the dilute stream was introduced into the combined UASB-MBR system. In the stabilization stage, the average COD of UASB effluent was 2048 mg·L(−1), and the effluent COD of MBR was maintained below 44–69 mg·L(−1), which met the discharge standard of water contaminants for the sugar industry. The coupled method reported here provides a viable idea and an effective reference for treating RSW and other similar industrial wastewaters with high salinity and organic contents.
format Online
Article
Text
id pubmed-10224370
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-102243702023-05-28 Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor Xu, Shichang Zhao, Han Xie, Lixin Wang, Keqiang Zhang, Wen Membranes (Basel) Article In this paper, refined sugar wastewater (RSW) is treated by electrodialysis (ED) coupled with an upflow anaerobic sludge blanket (UASB) and membrane bioreactor (MBR). The salt in RSW was first removed by ED, and then the remaining organic components in RSW were degraded by a combined UASB and MBR system. In the batch operation of ED, the RSW was desalinated to a certain level (conductivity < 6 mS·cm(−1)) at different dilute to concentrated stream volume ratios (V(D)/V(C)). At the volume ratio of 5:1, the salt migration rate J(R) and COD migration rate J(COD) were 283.9 g·h(−1)·m(−2) and 13.84 g·h(−1)·m(−2), respectively, and the separation factor α (defined as J(COD)/J(R)) reached a minimum value of 0.0487. The ion exchange capacity (IEC) of ion exchange membranes (IEMs) after 5 months of usage showed a slight change from 2.3 mmol·g(−1) to 1.8 mmol·g(−1). After the ED treatment, the effluent from the tank of the dilute stream was introduced into the combined UASB-MBR system. In the stabilization stage, the average COD of UASB effluent was 2048 mg·L(−1), and the effluent COD of MBR was maintained below 44–69 mg·L(−1), which met the discharge standard of water contaminants for the sugar industry. The coupled method reported here provides a viable idea and an effective reference for treating RSW and other similar industrial wastewaters with high salinity and organic contents. MDPI 2023-05-19 /pmc/articles/PMC10224370/ /pubmed/37233588 http://dx.doi.org/10.3390/membranes13050527 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xu, Shichang
Zhao, Han
Xie, Lixin
Wang, Keqiang
Zhang, Wen
Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title_full Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title_fullStr Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title_full_unstemmed Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title_short Study on the Treatment of Refined Sugar Wastewater by Electrodialysis Coupled with Upflow Anaerobic Sludge Blanket and Membrane Bioreactor
title_sort study on the treatment of refined sugar wastewater by electrodialysis coupled with upflow anaerobic sludge blanket and membrane bioreactor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10224370/
https://www.ncbi.nlm.nih.gov/pubmed/37233588
http://dx.doi.org/10.3390/membranes13050527
work_keys_str_mv AT xushichang studyonthetreatmentofrefinedsugarwastewaterbyelectrodialysiscoupledwithupflowanaerobicsludgeblanketandmembranebioreactor
AT zhaohan studyonthetreatmentofrefinedsugarwastewaterbyelectrodialysiscoupledwithupflowanaerobicsludgeblanketandmembranebioreactor
AT xielixin studyonthetreatmentofrefinedsugarwastewaterbyelectrodialysiscoupledwithupflowanaerobicsludgeblanketandmembranebioreactor
AT wangkeqiang studyonthetreatmentofrefinedsugarwastewaterbyelectrodialysiscoupledwithupflowanaerobicsludgeblanketandmembranebioreactor
AT zhangwen studyonthetreatmentofrefinedsugarwastewaterbyelectrodialysiscoupledwithupflowanaerobicsludgeblanketandmembranebioreactor