![]() Similarly, new positive plateaus were observed in DO, indicating that the nitrifiers stopped to consume the DO after was completely removed. From the online monitoring performances, DO elbow and ammonia valley appeared in ORP and pH profiles, respectively. The results showed that the removal of was more than 95% for TS1, TS2, and TS4. Experiments were conducted at four track studies (TS) of TS1 ( 50 mg/L, aeration 0.3 L/min), TS2 ( = 100 mg/L, aeration 2.0 L/min), TS3 ( 100 mg/L, no aeration) and TS4 ( 10 mg/L, aeration 0.1 L/min). Two types of polluted drinking water strength (low and high strength) with various concentrations and aeration flow were treated at a fixed-time reaction of 24 h. A novelty BAF system as newl application for drinking water treatment that equipped with ORP, pH, DO and sensors was used. This study was undertaken to identify the relevant bending points in ORP, pH, and DO profiles in ammonia removal through online monitoring.
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