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The process of anaerobic ammonium oxidation (Anammox) requires a proper ratio of NH4+-N and NO2−-N in the influent, which is difficult to control upon treating domestic wastewater. In this study, a control strategy of semi-nitritation (SN) process based on monitoring the pH profile and NH4+-N concentration in a sequencing batch reactor (SBR) was developed. The aeration time of each cycle in SN-SBR...
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