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March 8, 2017

Level 3: Treatability OUR Testing

This level of oxygen uptake rate (OUR) testing is used to evaluate the impact of different chemical compounds or waste streams on a biological treatment system. In particular, Level 3 OUR testing allows you to determine if a waste stream or chemical is desirable, inhibitory, or toxic to the microorgani...

Level 2: Time to Endogenous Respiration

Many activated sludge systems do not achieve endogenous respiration by the time the mixed liquor leaves the bioreactor, indicating that treatment is not complete. When this is the case, extended oxygen uptake rate testing can be used to determine how long it takes for the system to reach a state...

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