What is the term for the daily pattern of wastewater flow?

The term for the daily pattern of wastewater flow is "Diurnal Flow Pattern." This concept refers to the variation in wastewater flow that occurs throughout the day, typically showing predictable peaks and troughs based on human activity and usage patterns.

For instance, during the early morning hours, wastewater flow tends to increase as people wake up and start their day, using water for activities such as showering, cooking, and flushing toilets. As the day progresses, flow may decrease during work hours, only to rise again in the evening when households engage in similar activities. Understanding this flow pattern is crucial for wastewater treatment facilities, as it helps in designing systems that can adequately handle fluctuations in flow and ensure effective treatment.

Other patterns mentioned, like continuous, weekly, or seasonal flow patterns, fail to capture the day-to-day cyclical nature of human activities that influence wastewater flow on a daily basis. Thus, "Diurnal Flow Pattern" accurately describes the specific daily flow variations seen in wastewater systems.