Recovery of Biologically Treated Textile Wastewater by Ozonation and Subsequent Bipolar Membrane Electrodialysis Process

The Bipolar Membrane Electrodialysis process (BPMED) can produce valuable chemicals such as acid (HCl, H2SO4, etc.) and base (NaOH) from saline and brackish waters under the influence of an electrical field. In this study, BPMED was used to recover wastewater and salt in biologically treated textile...

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Bibliographic Details
Published in:Membranes (Basel) 2021-11, Vol.11 (11), p.900
Main Authors: Yuzer, Burak, Selcuk, Huseyin
Format: Article
Language:English
Subjects:
Anion exchange
Anion exchanging
bipolar membrane electrodialysis
Chemical oxygen demand
Color
Desalination
Effluents
Electrodialysis
Membranes
Methods
Organic carbon
Oxidation
Ozonation
Pollutants
Resource recovery
Sodium hydroxide
Sulfuric acid
Textile industry
Textile industry wastewaters
textile wastewater
Total organic carbon
Wastewater
Wastewater reuse
Wastewater treatment
Water quality
Water reuse
Zero discharge
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Summary:The Bipolar Membrane Electrodialysis process (BPMED) can produce valuable chemicals such as acid (HCl, H2SO4, etc.) and base (NaOH) from saline and brackish waters under the influence of an electrical field. In this study, BPMED was used to recover wastewater and salt in biologically treated textile wastewater (BTTWW). BPMED process, with and without pre-treatment (softening and ozonation), was evaluated under different operational conditions. Water quality parameters (color, remaining total organic carbon, hardness, etc.) in the acid, base and filtrated effluents of the BPMED process were evaluated for acid, base, and wastewater reuse purposes. Ozone oxidation decreased 90% of color and 37% of chemical oxygen demand (COD) in BTTWW. As a result, dye fouling on the anion exchange membrane of the BPMED process was reduced. Subsequently, over 90% desalination efficiency was achieved in a shorter period. Generated acid, base, and effluent wastewater of the BPMED process were found to be reusable in wet textile processes. Results indicated that pre-ozonation and subsequent BPMED membrane systems might be a promising solution in converging to a zero discharge approach in the textile industry.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes11110900