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

What is shock transmission unit in bridges, Q. What is Shock transmission u...

Q. What is Shock transmission unit in bridges? Shock transmission unit is fundamentally a device connecting separate structural units. It's characterized by its ability to tran

Distomat, short note of distomat

short note of distomat

Deflection of beam, a simply supported beam with concentric load

a simply supported beam with concentric load

Premix carpet - road pavements, Premix Carpet: An open graded premix ...

Premix Carpet: An open graded premix carpet, commonly called premix carpet (PC), is an open graded premixed material laid to a thickness of 20 mm and rolled, followed by a se

Chain surveying, Chain Surveying: In the chain surveying, you have stu...

Chain Surveying: In the chain surveying, you have studied the basics of chain surveying. In chain surveying, various equipment and instruments are used for measuring distances

Building material, how to calculate the specific gravity and water absorpti...

how to calculate the specific gravity and water absorption of coarse aggregate

Show the design of howe truss, Q. Show the Design of Howe truss? Design...

Q. Show the Design of Howe truss? Design of Howe truss is the opposite to that of Pratt truss in that the diagonal members are slanted in the direction opposite to that of Prat

Levelling, what is the types of levelling

what is the types of levelling

Determine the station and elevation of turning point, A -3.00% grade inters...

A -3.00% grade intersects a +1.25% grade at Sta. 85+80 and elevation 210.00 ft.  A 350-ft vertical curve connects the two grades.  Determine the station and elevation of turning po

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