

Mar 8, 20178 min read
OUR Level 3 Testing
Level 3: Treatability OUR Testing This level of oxygen uptake rate (OUR) testing is used to evaluate the impact of different chemical...


Mar 8, 20174 min read
OUR Level 2 Testing
Level 2: Time to Endogenous Respiration Many activated sludge systems do not achieve endogenous respiration by the time the mixed liquor...


Mar 7, 20174 min read
State Point Analysis
State Point Analysis With just six data inputs, state point analysis (SPA) would seem to provide a simple mathematical model for...