Treating anaerobic sequencing batch reactor effluent with electrically conducting ultrafiltration and nanofiltration membranes for fouling control
| Autor: | Avner Ronen, Wenyan Duan, Shiyun Yao, Mark R. Matsumoto, David Jassby, Jose Corbala-Delgado, Jose Valle de Leon, Alexander V. Dudchenko, Alyssa Yan |
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| Rok vydání: | 2016 |
| Předmět: |
Waste management
Fouling Chemistry Membrane fouling Ultrafiltration Sequencing batch reactor Filtration and Separation 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Pulp and paper industry 01 natural sciences Biochemistry Industrial wastewater treatment Membrane Materials Science(all) General Materials Science Nanofiltration Physical and Theoretical Chemistry 0210 nano-technology Effluent 0105 earth and related environmental sciences |
| Zdroj: | Journal of Membrane Science. 504:104-112 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/j.memsci.2016.01.011 |
| Popis: | The anaerobic treatment of industrial wastewater has attracted a significant amount of interest. However, excessive fouling complicates the treatment of anaerobic reactor effluent with membranes, which limits the application of membranes as a tertiary treatment. Here, we use an anaerobic sequencing batch reactor coupled to electrically conducting ultrafiltration and nanofiltration membranes to treat high-strength industrial wastewater containing high concentrations of benzyl alcohol, a commercial paint stripper. We demonstrate that an anaerobic process can be used successfully to degrade this contaminant. We also show that the application of negative electrical potential to the ultrafiltration membrane surface prevents membrane fouling and allows for higher operational fluxes during the treatment of complex wastewater streams. The application of positive potential to the membrane surface increases membrane fouling, as well as hindering the cleaning and recovery of the nanofiltration membranes. Overall, our experimental results demonstrate the feasibility of using electrically conducting membranes to prevent membrane fouling during the treatment of anaerobic reactor effluent at high operational fluxes. |
| Databáze: | OpenAIRE |
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