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\bibitem{Li_etal2020} {\textquotedblleft}\textit{Impact of carrier on ammonia and organics removal from zero-discharge marine recirculating aquaculture system with sequencing batch biofilm reactor (SBBR)}{\textquotedblright}. Li J, Zhu W, Dong H, Yang Z, Zhang P, Qiang Z, Environmental Science And Pollution Research \textbf{27}, 34614 (2020).   http://doi.org/10.1007/S11356-019-04887-8

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