Journal
BIORESOURCE TECHNOLOGY
Volume 154, Issue -, Pages 290-296Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.12.075
Keywords
MBR; Micro-polluted surface water; Optimal dosage; PAC
Funding
- Shanghai Science and Technology Project for International Cooperation [12230707602]
- China Scholarship Council [2010626167]
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To address the water scarcity issue and advance the traditional drinking water treatment technique, a powdered activated carbon-amended membrane bioreactor (PAC-MBR) is proposed for micro-polluted surface water treatment. A pilot-scale study was carried out by initially dosing different amounts of PAC into the MBR. Comparative results showed that 2 g/L performed the best among 0, 1, 2 and 3 g/L PAC-MBR regarding organic matter and ammonia removal as well as membrane flux sustainability. 1 g/L PAC-MBR exhibited a marginal improvement in pollutant removal compared to the non-PAC system. The accumulation of organic matter in the bulk mixture of 3 g/L PAC-MBR led to poorer organic removal and severer membrane fouling. Molecular weight distribution of the bulk liquid in 2 g/L PAC-MBR revealed the synergistic effects of PAC adsorption/biodegradation and membrane rejection on organic matter removal. Additionally, a lower amount of soluble extracellular polymer substances in the bulk can be secured in 21 days operation. (C) 2013 Elsevier Ltd. All rights reserved.
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