| Autor: |
Hanbao Li, Yinghui Mo, Liang Wang, Xiangyu Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Water Cycle, Vol 4, Iss , Pp 79-86 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-4453 |
| DOI: |
10.1016/j.watcyc.2023.03.002 |
| Popis: |
The increasing cost of polyvinylidene fluoride has motivated efforts of researchers to seek a cheap membrane material for membrane bioreactors (MBRs). An inexpensive hydrophilic polyethylene (PE) lithium-ion battery separator was used in this study to construct a flat-sheet membrane module for MBRs treating synthetic municipal wastewater (PE-MBR). The PE separator showed an interconnected and open pore structure with a pore size of 50–60 nm. Its hydrophilicity was confirmed by the contact angle (77.65°) and relatively high pure water permeability of 412.17 LMH. The operation of the PE-MBR under 15 LMH below the critical flux last more than 50 d before the trans-membrane pressure reached 25 kPa and the COD removal was higher than 90%. The revised Hermia model fitting suggested that cake formation was the predominant fouling mechanism on the PE separator with polysaccharides as the main organic pollutant. A cleaning efficiency of 76.26% of the PE separator was achieved using 1 g/L of Oxalic acid, 3 g/L of NaOH, and 100 mg/L of EDTA as the cleaning reagents. This study establishes the feasibility of the PE separator in MBRs and provides a new strategy to lower the operation cost and broaden the real applications of MBR in wastewater treatment. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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