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

Maintenance of steel bearings, Q. Maintenance of steel bearings? Cleani...

Q. Maintenance of steel bearings? Cleaning and greasing of bearings is one of the important maintenance works to avoid premature failure of bearings and reduce recurring heavy

Design the curtain to touch the seabed, Question For fixing of silt cur...

Question For fixing of silt curtains, what is the reason that it does not desirable to design the curtain to touch the seabed ? Answer Silt finished are resistant ve

Factor that affect the bearing capacity of a shallow footing, State the var...

State the various factors that affect the bearing capacity of a shallow footing. Write short note critical notes on settlement of foundations. How do you ascertain whether a fou

Building Technology, which IS code give details about Strength of Brick?

which IS code give details about Strength of Brick?

I am expert i this field, i require a workquestion #Minimum 100 words acce...

i require a workquestion #Minimum 100 words accepted#

Illustrate the purpose of pedestals, Q. Illustrate the Purpose of pedestals...

Q. Illustrate the Purpose of pedestals? When structural steel works are connected to foundation, pedestals are generally designed to carry loads from metal columns through grou

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