Aeration Data

The data come from a wastewater treatment facility that uses sensors to optimize aeration basin performance. In an aeration basin, air is pumped through water by large blowers to provide microbiota with oxygen, allowing them to metabolize and consume influent contaminants like ammonia and carbon. The rate at which influent contaminants are metabolized depends primarily on the availability of oxygen and "food" in the aeration tank. Thus, the levels of oxygen must be high enough to allow the microbiota to effectively carry out their metabolic functions, without being too high because excessive aeration would waste energy and money. The carbon consumption rate (CCR) sensor is a special sensor that can monitor the rate at which contaminants are metabolized. These data show problems in aeration basin dissolved oxygen, which frequently rises or falls out of the recommended range, reflecting a mismatch between food and oxygen levels. This results in either insufficient or excess oxygen remaining in the tank. Time stamps were standardized to represent 15 minute intervals, and known sensor misreadings were removed.