What is the hydraulic residence time of the reactor

Assignment Help Civil Engineering
Reference no: EM13318812

a small community wishes to construct an activated sludge wastewater treatment plant to treat their wastewater. the wastewater from the community has an average flow rate of 0.0022 m^3/s (190 m^3/day) and an influent substrate concentration of 250 mg/L as COD and all of them are essentially soluble. for sizing the syst em, the mean cell residence time is selected to be 5 days. the reactoer kinetic constants are u max= 2.4 d^-1 (1/day), Ks=75 mg/L as COD, Y=0.4 VSS/g COD and Kd=0.096 d^-1(1/day)

the design engineer propsed a fully mixed tank with a volume of 25 m^3. you have asked to evaluate this design and the follow parameters have to be calculated.

1. what is the hydraulic residence time of this reactor?

2. what is the COD removal efficiency of this system?

3. what is the biomass concentration in aeration tank?

4. what is the F/M ratio?

5. what is the sludge production rate?

Reference no: EM13318812

Find power rating of electric heater required to maintain

A room 7m x 6m x 3m high is to be electically heated to maintain the inside temperature at 20 C, when it is 0 C outside. The room has 2 windows each 1.2m x 1.8m and a slidin

Determine the distances the spacecraft must be from moon

consider a spacecraft that is positioned directly between the earth and moon.the mass of the moon's is approximately 7.35 X10^22 kg, and at the instant under consideration,

Determine the average normal stress and average shear stress

A wood board with a 2in. by 4in. cross section is subjected to a tensile load of 100 lb. Determine the average normal stress and average shear stress developed in the wood fib

Cause of heading-up of the water surface

A rectangular channel 2.0 m wide carrying a discharge of 2.5 m3/s is to be fitted with a weir at its downstream end to provide a means of flow measurement as well as to caus

Determine distance the officer traveled before overtaking

A police car parked in a 45 mi/h speed zone observes a passing car traveling at a slow, constant speed. The officer believes the driver is intoxicated and begins accelerating

What is the left turn adjustment factor for the case describ

An intersection approach has three lanes, permitted left turns, and 6% left-turning volume with a through vehicle equivalent of 5.0 tvu/left turn. The saturation flow rate for

Determine what would be the co concentration in the box

A simple way to model air pollution over a city is with a box model that assumes complete mixing and limited capability for the pollution to disperse horizontally or vertica

Find the final volume and temperature for both cases

A handheld pump for a bicycle (Fig. P6.91) has a volume of 25 cm3 when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so th

Reviews

Write a Review

 
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd