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- W2589722078 abstract "Under decreasing C/N (from 8.8 to 3.5) conditions, an alternating anaerobic/aerobic biofilter (AABF) was used to remove nitrogen and accumulate/recover phosphorus (P) from synthetic wastewater. The AABF was periodically (every 10 days) fed with an additional carbon source (10 L, chemical oxygen demand (COD) = 900 mg L-1 sodium acetate (NaAC) solution) in the anaerobic phase to induce the release of P sequestered in the biofilm. An increase in PHA storage in the biofilm was observed and characterized with TEM and a GC-MS method. The accumulation of P and removal of total nitrogen occurred primarily in the aerobic phase. As the NH4+-N loading rate increased from 0.095 to 0.238 kg m-3 d-1 at a total empty bed retention time (EBRT) of 4.6 h, the TN removal in AABF was reduced from 91.2% to 43.4%, while the P removal or recovery rate remained unaffected. The high-throughput community sequencing analysis indicated that the relative abundance of Candidatus Competibacter, Nitrospira and Arcobacter increased while the Accumulibacter phosphatis decreased with an increase of ammonium loading rate within a short operational period (30 days). A putative N and P removal pattern via simultaneous nitrification and PHA-based denitrification, as well as P accumulation in the biofilm was proposed. The research demonstrated that an efficient N removal and P recovery process, i.e., simultaneous nitrification and denitrification, P accumulation and carbon source-regulated P recovery can be achieved by the symbiotic functional groups in a single biofilm reactor." @default.
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- W2589722078 date "2017-08-01" @default.
- W2589722078 modified "2023-10-16" @default.
- W2589722078 title "Phosphorus (P) recovery coupled with increasing influent ammonium facilitated intracellular carbon source storage and simultaneous aerobic phosphorus & nitrogen removal" @default.
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- W2589722078 doi "https://doi.org/10.1016/j.watres.2017.02.050" @default.
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