A BNR facility is designed for a flow of 8500 m-/d. The influent TP is 5.5 mg/L, and required effluent TP concentration is less than 1 mg/L. The BOD3 in influent is 150 mg/L, and the ratio of BOD5/COD is 0.48. Calculate the achievable TP in the effluent and minimum volume of the anaerobic zone. Assume TSS in effluent is 10 mg/L or less, the TVSS/TSS ratio is 0.8, and the representative chemical formula for the VSS portion of biomass is C60H87023N12P.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.