Engineering, 13.08.2021 01:00 littleprinces

Determine the required reactor volume, in million gallons (MG), for a completely mixed, aerobic, activated sludge system which will treat 1 MGD of domestic wastewater. The waste water has an initial ultimate BOD of 200 mg/L. The effluent requirement is 10 mg/L of ultimate BOD. The first order degradation rate constant is K = 0.1 L/mg-day, i. e. the governing equation is q = KSe for calculating the specific substrate utilization rate (q) through kinetic parameters. Se is the effluent ultimate BOD (i. e. 10 mg/L). The mixed liquor volatile suspended solids (X) equals 3,000 mg/L. What is the reactor volume? a. 0.095 MG
b. 0.063 MG
c. 0.92 MG
d. 0.13 MG

Answers: 2

Show answers

Another question on Engineering

Engineering, 03.07.2019 15:10

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Answers: 1

Answer

Engineering, 04.07.2019 16:10

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Answers: 3

Answer

You know the right answer?

Determine the required reactor volume, in million gallons (MG), for a completely mixed, aerobic, act...

Questions