Environmental Question, Civil Engineering

Assignment Help:
An activated sludge tank treats 1 MGD from the primary clarify and has an X of
2200 ppm SS. The water euent is 0.9 MGD. 1.0 MGD of the sludge is recycled back into the tank
and has an [SS] of 3980 ppm. The concentration of the BOD exiting the primary clarier is 200
ppm.
(a) What are Qw and Xw?
(b) What are Qc and Xc?
(c) What are Q1 and X1?
(d) What is Xe? (Answer = 24.4 ppm)
(e) Calculate the volume of the tank that will satisfy the following requirements:
(e-1) BOD loading < 35 lb BOD/1000 ft3day
(e-2) Sludge age > 5 days
(e-3) Aeration period > 4 hr

Related Discussions:- Environmental Question

Material engineering assignment, select three materials metal and non meala...

select three materials metal and non mealat at least one of the selected materials shold change its property

Calculate concrete yield in cubic feet per sack of cement, Calculate the Co...

Calculate the Concrete Yield in Cubic Feet per Sack of Cement A concrete mix design is 1: 1.9: 2.8 by weight.  The water cement ratio is 7 gallons of water per sack.  The aggre

Importance of tendons in post-tensioned members, Importance of Tendons in p...

Importance of Tendons in post-tensioned members Tendons in post-tensioned members are subjected to different amounts of stresses (among themselves) due to following reasons.

Determine condition of activity in the network flow diagram, Determine the ...

Determine the condition of each activity in the network flow diagram shown below   Ans: a. Activity C can be started only after the completion of activities A and

Strength of materials, distribution of shear stress in triangular section

distribution of shear stress in triangular section

Degree, what classes do you have to take and what are some school options?

what classes do you have to take and what are some school options?

State the effect of stretched tendons, State the effect of stretched tendon...

State the effect of stretched tendons The effect of stretched tendons inside the concrete components is just like a stretched spring. If a spring is stretched it would like to

Write Your Message!

Captcha
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