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- W2391249370 abstract "To explore inhibition mechanism of apparent nitrification rate in membrane bio-reactor(MBR) under salinity, nitrification of the activated sludge in MBR under different salinity was simulated by batch experiments. The apparent nitrification rate, the autotrophic bacteria activity and the amount of deoxyribonucleic acid(DNA) and protein in both SMP and EPS were determined. The results showed that as the salinity increased, the apparent nitrification rate gradually decreased. When the salinity was over 12.5g/L, NH4+-N content in the system increased. Also, the autotrophic bacteria activity was gradually inhibited, and the inhibition level was positively correlated with the salinity. Meanwhile, the amount of DNA in SMP and EPS increased when the salinity was over 2.5g/L, indicating that the inhibition of sludge activity was resulted from the destroying of cell structure. The amount of protein in SMP and EPS significantly raised as the salinity increased, showing that the release of NH4+-N due to the protein hydrolyzed in the sludge system was also the reason for the decline of the apparent nitrification rate. With salinity under 12.5g/L, the influence of NH4+-N releasing on apparent nitrification rate decline was increased with the increase of salinity." @default.
- W2391249370 created "2016-06-24" @default.
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- W2391249370 date "2014-01-01" @default.
- W2391249370 modified "2023-09-23" @default.
- W2391249370 title "Inhibition mechanisms of apparent nitrification rate in membrane bio-reactor with salinity" @default.
- W2391249370 hasPublicationYear "2014" @default.
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