Abstract:
:The performance and membrane fouling of a hybrid moving bed biofilm reactor-membrane bioreactor (MBBR-MBR) system was evaluated when exposed to 0.5 mg/L of antibiotic sulfadiazine (SDZ). Results indicated that although SDZ reduced the removal efficiency of NH4+-N and TN (up to 12%) and TOC (up to 6%) at low C/N (2.5 and 4), it had no significant effect at high C/N (6 and 9). It was found that SDZ was removed 75% and 58% at high C/N of 9 and low C/N of 2.5, respectively. SDZ decreased the ratio of volatile biomass/total biomass and sludge particle size and increased the concentrations of extracellular polymeric substance (EPS) and soluble microbial product (SMP) in MBR. Consequently, this accelerated the membrane fouling rates, with an average increase of 6.85 kPa/d at low C/N (2.5) and 0.513-0.701 kPa/d at medium and high C/N (4, 6 and 9).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhang X,Zhang Z,Liu Y,Hao Ngo H,Guo W,Wang H,Zhang Y,Zhang Ddoi
10.1016/j.biortech.2020.124180subject
Has Abstractpub_date
2020-12-01 00:00:00pages
124180eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31454-1journal_volume
318pub_type
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