期刊
BIORESOURCE TECHNOLOGY
卷 273, 期 -, 页码 573-580出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.11.058
关键词
Ciprofloxacin; Dosage; Sponge membrane bioreactor; Hospital wastewater
资金
- National Foundation for Science and Technology Development, Vietnam (NAFOSTED) [105.99-2015.16]
- Ministry of Science and Technology, Vietnam
- Gwangju Institute of Science and Technology (GIST), South Korea
This study aimed to evaluate treatment performance and membrane fouling of a lab-scale Sponge-MBR under the added ciprofloxacin (CIP) dosages (20; 50; 100 and 200 mu g L-1) treating hospital wastewater. The results showed that Sponge-MBR exhibited effective removal of COD (94-98%) during the operation period despite increment of CIP concentrations from 20 to 200 mu g L-1. The applied CIP dosage of 200 mu g L-1 caused an inhibition of microorganisms in sponges, i.e. significant reduction of the attached biomass and a decrease in the size of suspended flocs. Moreover, this led to deteriorating the denitrification rate to 3-12% compared to 35% at the other lower CIP dosages. Importantly, Sponge-MBR reinforced the stability of CIP removal at various added CIP dosages (permeate of below 13 mu g L-1). Additionally, the fouling rate at CIP dosage of 200 mu g L-1 was 30.6 times lower compared to the control condition (no added CIP dosage).
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