Oxygen transfer rate in Wastewater treatment – calculation example

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Before we can calculate the oxygen transfer rate, we have to determine our oxygen demand. Depending on the wastewater treatment target different factors must be considered to calculate the actual oxygen requirement (AOR). Design flows and loads: Water influents are not consistent and vary between daily minimum, average and peak flows. Design guidelines recommend dividing […]

Surface aerators and submersible aeration equipment for wastewater treatment

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The activated sludge process requires certain types of microorganisms to break down organic matter in wastewater. As any other living organism, the microorganisms need energy to reproduce. When breaking down organic matter or oxidizing ammonium (NH4+) to Nitrite (NO2-) energy in the form of ATP for microorganism reproduction is released. However, both conversions need oxygen. […]