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

Atomic weight of an atom is equal to, Atomic weight of an atom is equal to?...

Atomic weight of an atom is equal to? Answer: sum of the number of protons and neutrons.

Pelton wheel, what is the use of the pelton wheel

what is the use of the pelton wheel

Defect of timber, due to defectiveseasoning and conversion

due to defectiveseasoning and conversion

Write short note on open foundation, Q. Write short note on Open Foundation...

Q. Write short note on Open Foundation? Broadly the foundation are classified into open i.e. shallow & deep foundations open as stated are shallow foundation where the soil str

Determine the diameter of the footing, A circular footing is resting on a s...

A circular footing is resting on a stiff saturated clay with qu = 250 kN/m 2 . The depth of foundation is 2 m. Verify the diameter of the footing if the column load is 600 kN. S

Building classification, Why I is the missing after h and J is written in t...

Why I is the missing after h and J is written in the classification of building

Determine the natural frequencies - shear building, For the shear building ...

For the shear building shown, determine the natural frequencies (RAD/SEC) and the modal matrix. Also, sketch the deflected buildings in their normal modes using the top floor as th

Return period for design situations, Question While design life will it...

Question While design life will it be same as return period for design situations ? Answer Design life means least duration a structure is accepted to last. Longe

Curved prestressed bridge, In a curved prestressed bridge , how ought to t...

In a curved prestressed bridge , how ought to the guided bearings in piers of curved region be oriented with respect to a fixed bearing in abutment?

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