期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 165, 期 -, 页码 123-129出版社
ELSEVIER
DOI: 10.1016/j.seppur.2016.03.051
关键词
Hospital wastewater; Fouling; Sponge membrane bioreactor; Low flux
资金
- Vietnam National University - Ho Chi Minh City [B2014-20-03]
- National Foundation for Science and Technology Development (NAFOSTED), Ministry of Science and Technology, Vietnam [105.99-2015.16]
- Ministry of Science and Technology in South Korea through the Institute of Science and Technology for Sustainability
The performance and membrane fouling of a lab-scale submerged sponge-membrane bioreactor (Sponge-MBR) and a conventional MBR were investigated and compared for hospital wastewater treatment at low fluxes of 2-6 LMH. COD removal by the Sponge-MBR was similar to that of the MBR, while the Sponge-MBR achieved 9-16% removed more total nitrogen than the MBR. This was due to 60% of total biomass being entrapped in the sponges, which enhanced simultaneous nitrification denitrification. Additionally, the fouling rates of the Sponge-MBR were 11-, 6.2- and 3.8-times less than those of the MBR at flux rates of 2, 4 and 6 LMH, respectively. It indicates the addition of sponge media into a MBR could effectively reduce the fouling caused by cake formation and absorption of soluble substances in a low flux scenario. (C) 2016 Elsevier B.V. All rights reserved.
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