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Riechers Spence 8, Associates Job #: 21 02 049.0 <br /> Consulting Civil Engineers Date: 10/21 /02 <br /> V (49.9673m')(24h/d) <br /> s =-- -352 h (14.7 d) <br /> O 3.4069m' /d <br /> _ c.) MLVSS - <br /> Fraction VSS = 118.97 kg / 151 .06 kg = .78757 <br /> MLVSS = 0.78757 * 3,000 g/m3 = 2,362.7 g/m3 <br /> 8. F/M and BOD volumetric Loading <br /> a.) F/M <br /> F/M = (Q * SO) / (X * V) <br /> = (3.4069 m3/d * 15,500 g/m3) / (2,362.7 g/m3* 49.9673 m3) <br /> = 0.4473 g/g•d <br /> b.) Volumetric BOD loading <br /> Lo,g = Q*So / V <br /> = (3.4069 m3/d * 15,500 g/m3) / (103 g/kg * 49.9673 m3) <br /> = 1 .0568 kg/m3•d (1 ,056.83 g/m3•d) <br /> 10. Observed yield based on TSS and VSS <br /> Observed yield = g TSS / g bCOD = kg TSS / kg bCOD <br /> PX'M = 17.898 kg/d <br /> bCOD removed = Q * (So-S) <br /> = 3.4069 m3/d * (15,500-1 .39) g/m3 * 10-3 kg/g <br /> = 52.8022 kg/d <br /> a.) observed yield based on TSS <br /> Yobs,Tss = (17.898 kg/d)(52.8022) = 0.33896 kg TSS / kg bCOD <br /> = (0.33896 g TSS / g bCOD)(1 .55 g bCOD / g BOD) <br /> = 0.5254 g TSS / g BOD <br /> b.) observed yield based on VSS <br /> Yobs,vss = (VSS / TSS) * Yobs,Tss = <br /> = 0.78757 g VSS / g TSS* 0.5254 g TSS / g BOD <br /> = 0.41378 g VSS / g BOD <br /> 11. Oxygen demand <br /> Ro = Q(So-S) - 1 .42 Px.b;o + 4.33 Q(NOx) <br /> = 3.4069 m3/d (15,500-1 .39) g/m3 * 10-3 g/kg- 1 .42 (13.83 kg/d) <br /> + (4.33 902 / gN) * 3.4069 m3/d * 5 g/m3 * 10-3 g/kg <br /> _ [52.8022- 19.6386 + 0.073761 = 33.2374 kg/d = 1 .3849 kg/h (3.05 Ib/h) <br /> 18 <br />