Determine hydraulic retention time in the treatment system

Assignment Help Civil Engineering

Reference no: EM13312753

Consider a wastewater treatment system which consists of the three identical complete mix reactors arranged in series. The dimensions of each reactor are as follows:

- Width= 40 feet

- Depth= 16 feet + 2.5 feet freeboard

- Length= 200 feet

The BOD5 of the influent wastewater is 150 mg/L and the first-order reaction rate for the degradation of BOD5 is 0.6/hr at 20°C. If the required effluent BOD5 is 20mg/L, determine:

a) The maximum allowable flow in the treatment system in million gallons per day (mgd)

b) The hydraulic retention time in the treatment system in hours

c) If the temperature of the wastewater drops to 10°C during the winter months, determine the maximum allowable flow in mgd to achieve an effluent BOD5 of 20mg/L.

Reference no: EM13312753

Questions Cloud

Define normal business status and what are the non cash item : Discuss the major differences between your analysis of the 30 June 2013 report and the 30 June 2011 report (prior to the takeover of CTEC).

Compute the moles of iron in the original volumetric flask : A 25.00 mL aliquot of iron solution was titrated to equivalence with 26.19 mL of 0.0215 M KMnO4. A procedure similar to the one in experiment 7 was followed. Calculate the moles of iron in the original volumetric flask.

With what velocity was the object launched : An object fired at an angle of 35.0(degrees) above the horizontal takes 1.87s to travel the last 11.4m of its vertical distance, With what velocity was the object launched

The idea of visual scheduling : One of the hardest things for schedulers to accept is the idea of visual scheduling, which iscommonly referred to as Kanban scheduling. All of the schedulers earned degrees or have extensive experience in operations management and are used to termino..

Determine hydraulic retention time in the treatment system : The BOD5 of the influent wastewater is 150 mg/L and the first-order reaction rate for the degradation of BOD5 is 0.6/hr at 20°C. If the required effluent BOD5 is 20mg/L

Determine the maximum acceleration of the truck : A crate of weight W=550 lb has been attached to a pickup truck by a rope whose tensile strength is T_max=350 lb. determine the maximum acceleration of the truck

Compute the microwave energy in joule per photon : Calculate the microwave energy in Joule per photon and in Joule per mole of photon (J/mol). (b) How many moles of microwave photon must be absorbed by 1.0 g of water to raise its temperature by 1.0 ºC?

What total cylinder length l is required for the platform : The platform itself weights 30 kN in air, and each cylinder weighs 1.0 kN per meter of length. What total cylinder length L is required for the platform to float 1 m above the water surface

Evaluate the weight of benzene codistilled : Calculate the weight of benzene codistilled with each gram of water and the percentage composition of the vapor produced during a steam distillation. The boiling point of the mixture is 69.4°C is 227.7 mmHg.

User Account

All Pages