Nutrient Removal ProjectEffect of Mixed Liquor Volatile Suspended Solids (MLVSS) Concentration on B.O.D. RemovalDissolved Oxygen As IndicatorDissolved Oxygen as IndicatorSlide 5Slide 6Settle time as variableSlide 8MLVSS Concentration TestsSlide 10MLVSS Concentration TestsSlide 12Summarizing The StrangeIn ConclusionThank You! Questions?Nutrient Removal ProjectMellie-Mel Tan Johnbwai KimJoey TEffect of Mixed Liquor Volatile Suspended Solids (MLVSS) Concentration on B.O.D. Removal• D.O. consumption as indicator • Settle time as variable• MLVSS Concentration TestsD.O. levels give uptake rate Time integral = total B.O.D. consumedWaste C.O.D. knownRatio observed to known = efficiencyDissolved Oxygen As IndicatorDissolved Oxygen as Indicator,ˆ( * )v ldCk C Cdt= -C*CtTheoreticaldX YkSXbdt Ks S= -+Dissolved Oxygen as IndicatorC*Dissolved Oxygen as IndicatorSettle time as variableApparent InterceptCell GrowthSettle time as variable0 1000 2000 3000 4000 5000 6000Settle Time100 %EfficiencyMLVSS Concentration TestsLaboratory HazardsMLVSS Concentration TestsMLVSS Concentration TestsHigh variabilityGrowthSummarizing The StrangeOscillating DO acquisitionSteadily decreasing D.O. valuesMissing samplesKv,l anyone?The Bermuda Triangle of Concentration SamplesIn Conclusion1 ftThank
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