Abstract：
:The system performance and microbial community succession in a partial nitrification biofilm reactor in response to salinity stress was conducted. It was found that the NH4+-N removal efficiency decreased from 98.4% to 42.0% after salinity stress increased to 20 g/L. Specific oxygen uptake rates suggested that AOB activity was more sensitive to the stress of salinity than that of NOB. Protein and polysaccharides contents showed an increasing tendency in both LB-EPS and TB-EPS after the salinity exposure. Moreover, EEM results indicated that protein-like substances were the main component in LB-EPS and TB-EPS as self-protection in response to salinity stress. Additionally, humic acid-like substances were identified as the main component in the effluent organic matter (EfOM) of partial nitrification biofilm, whereas fulvic acid-like substances were detected at 20 g/L salinity stress. Microbial community analysis found that Nitrosomonas as representative species of AOB were significantly inhibited under high salinity condition.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Li J,Ye W,Wei D,Ngo HH,Guo W,Qiao Y,Xu W,Du B,Wei Qdoi
10.1016/j.biortech.2018.09.068subject
Has Abstractpub_date
2018-12-01 00:00:00pages
512-518eissn
0960-8524issn
1873-2976pii
S0960-8524(18)31321-Xjournal_volume
270pub_type
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