| Autor: |
Mehrnia MR; School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran., Nasiri F; School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran., Pourasgharian Roudsari F; School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran., Bahrami F; School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran. |
| Jazyk: |
angličtina |
| Zdroj: |
Biofouling [Biofouling] 2022 May; Vol. 38 (5), pp. 415-426. Date of Electronic Publication: 2022 Jun 10. |
| DOI: |
10.1080/08927014.2022.2081805 |
| Abstrakt: |
Membrane costs and biofouling limit applications of membrane bioreactors (MBRs) for wastewater treatment. Here, powdered activated carbon (PAC) utilization in the formation and performance of a self-forming dynamic membrane consisting of activated sludge and PAC during hybrid wastewater treatment process was studied. Short-term agitation helped (non)biological particles to quickly uniformly settle on mesh filter, forming more uniform PAC-containing dynamic membranes (PAC-DMs). PAC adsorbed adhesive materials, resulting in an increase in average floc size and DM permeability while decreasing biofouling. The most efficient PAC concentration was 4 g L -1 considering techno-economics, i.e. the highest effluent quality (turbidity of 19.89 NTU) and the lowest biofouling (transmembrane pressure rise of 2.89 mbar). Short-term performance of hybrid PAC-DM bioreactor (PAC-DMBR) showed stability in effluent quality improvement including 92%, 95%, 83%, 84% and 98% reductions in turbidity, chemical oxygen demand, total dissolved solids, total nitrogen, and total phosphorous, respectively. Accordingly, adopting hybrid PAC-DMBR has potential to alleviate biofouling and capital cost. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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