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Magnesium ammonium phosphate (MAP) precipitation was introduced to remove ammonium nitrogen (NH4+–N) in autothermal thermophilic aerobic digestion (ATAD) in this study. The dosing time of MgCl2·6H2O and NaH2PO4·2H2O will influence the removal efficiency of ammonium nitrogen greatly, and the time interval of 2nd, 7th, 12th day were chosen in ATAD process. The lowest NH4+–N concentration was found in...
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