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

Linear algebra concept, Scenario: You are working for a structural engineer...

Scenario: You are working for a structural engineering firm and you have been assigned the task of computing the code checks on a new structural design. Though another commercial p

Engeneering surveying, demonstrate your understanding of the term setting o...

demonstrate your understanding of the term setting out

Determine the equivalent of free float, The free float is equal to: a. L...

The free float is equal to: a. Latest allowable event occurrence time + Early finish time b. Earliest event occurrence time + early finish time c. Latest allowable event o

Define reinforcing steel - limitations of ultrasonic system, Define Reinfor...

Define Reinforcing Steel - Limitations of Ultrasonic System? The sound velocity measurement taken parallel to the reinforcing bars embedded in the concrete will be markedly hig

Influence lines for cantilever beam, fine the influence line for cantilever...

fine the influence line for cantilever beam of span 7 m and load at 2 m?

Components of a typical expansion joint, Question Explain components of a t...

Question Explain components of a typical expansion joint? Answer Dowel bar-This is major component of joint. It serves to guide direction of movement of concrete growth. Therefo

Write briefly for trolley permits, Q. Write briefly for Trolley Permits? ...

Q. Write briefly for Trolley Permits? It is the permit given to the Moter Trolley / Push Trolley, Cycle / Moped Trolley. It is essential to have Trolley Permit before taking t

Survying, what aare the parts and function of steel tape ?

what aare the parts and function of steel tape ?

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