Performance evaluation of conventional membrane bioreactor and moving bed membrane bioreactor for synthetic textile wastewater treatment
| Autor: | Abdulkadir Caglak, Betul Takatas, Ayberk Soysaloglu, Guleda Onkal Engin, Hanife Sari Erkan |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
02 engineering and technology
010501 environmental sciences Membrane bioreactor 01 natural sciences Article Extracellular polymeric substance 020401 chemical engineering Bioreactor 0204 chemical engineering Safety Risk Reliability and Quality Waste Management and Disposal 0105 earth and related environmental sciences ComputingMethodologies_COMPUTERGRAPHICS Fouling Chemistry Process Chemistry and Technology Moving bed-membrane bioreactor Chemical oxygen demand Membrane fouling Conventional membrane bioreactor Pulp and paper industry Color removal Biocarriers Wastewater Sewage treatment textile industry wastewater Biotechnology |
| Zdroj: | Journal of Water Process Engineering |
| ISSN: | 2214-7144 |
| Popis: | Graphical abstract Highlights • MBR and moving bed-MBR processes were compared in textile wastewater treatment. • Almost equal COD and color removal efficiencies were found in both operations. • Physical and chemical membrane cleaning were required throughout the MBR operation. • No physical or chemical membrane cleaning was required during MB-MBR operation. • Lower polysaccharide and floc sizes, and higher zeta potential were found in MB-MBR. In this study, conventional membrane bioreactor (MBR) and moving bed-membrane bioreactor (MB-MBR) processes were compared in synthetic textile wastewater treatment. For this purpose, the bioreactors were operated as a conventional MBR, an MB-MBR with a biocarrier filling ratio of 20 % and an MB-MBR with a biocarrier filling ratio of 10 %, respectively. In the conventional MBR operation, 93.1 % chemical oxygen demand (COD) and 87.1 % color (Reactive Red 390) removal efficiencies were obtained. In both MB-MBR operations, almost equal COD and color removal efficiencies were found as 98.5 % and 89.5 %, respectively. Moreover, offline physical and chemical membrane cleaning processes were applied every other day and every 15 days throughout the conventional MBR operation, respectively, while no physical or chemical membrane cleaning was required during both MB-MBR operations. Furthermore, lower polysaccharide concentrations of extracellular polymeric substances (EPS) and floc sizes of sludge and higher zeta potential of sludge were determined in MB-MBR. Considering the obtained results, it may be stated that the MB-MBR process is an attractive treatment technology for reducing membrane fouling propensity for treatment of textile wastewater. |
| Databáze: | OpenAIRE |
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