Finned spacer for efficient membrane fouling control in produced water filtration
| Autor: | Juhana Jaafar, Ratri Rahmawati, Norwahyu Jusoh, N. A. H. M. Nordin, Afiq Mohd Laziz, Zulfan Adi Putra, Muhammad Roil Bilad, Teuku Meurah Indra Mahlia |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Materials science 0208 environmental biotechnology Flow (psychology) 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences law.invention Water Purification Bioreactors law Shear stress Composite material Waste Management and Disposal Filtration 0105 earth and related environmental sciences Air Membrane fouling Water Membranes Artificial General Medicine Produced water 020801 environmental engineering Membrane Permeability (electromagnetism) Aeration |
| Zdroj: | Journal of environmental management. 249 |
| ISSN: | 1095-8630 |
| Popis: | Membrane based technologies are highly reliable for water and wastewater treatment, including for removal of total oil and grease from produced water. However, performances of the pressure driven processes are highly restricted by membrane fouling and the application of traditional air bubbling system is limited by their low shear stress due to poor contacts with the membrane surface. This study develops and assesses a novel finned spacer, placed in between vertical panel, for membrane fouling control in submerged plate-and-frame module system for real produced water filtration. Results show that permeability of the panel is enhanced by 87% from 201 to 381 L/(m2 h bar). The spacer system can be operated in switching mode to accommodate two-sided panel aeration. This leads to panel permeability increment by 22% higher than the conventional vertical system. The mechanisms of finned spacer in encouraging the flow trajectory was proven by visual observation and flow simulation. The fins alter the air bubbles flow trajectory toward the membrane surface to effectively scour-off the foulant. Overall results demonstrate the efficacy of the developed spacer in projecting the air bubble trajectory toward the membrane surface and thus significantly enhances membrane panel productivity. |
| Databáze: | OpenAIRE |
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