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.

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux