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

Deflection of beam, a simply supported beam with concentric load

a simply supported beam with concentric load

Lubrication of rail joint, Lubrication of rail joints is one of the importa...

Lubrication of rail joints is one of the important items of permanent way works incidental to systematic track maintenance, the lubrication of joints is done for the following purp

Cement Sand Plaster, How to use plaster cement in sand?  Cement sand pl...

How to use plaster cement in sand?  Cement sand plaster is a layer of cement & sand mortar that is applied over walls made of brickwork, cement block work, RCC walls and RCC co

Slope protection, what is the type of slope protection that use rocks and p...

what is the type of slope protection that use rocks and put cements between those rocks??the concept is same as brick layer

Show the filter below the revetment, Q. Show the filter below the revetment...

Q. Show the filter below the revetment? A filter placed between the revetment / protection works at the surface and the soil bed below the revetment / protection works. Main fu

What do you mean by river gauging, Q. What do you mean by River Gauging? ...

Q. What do you mean by River Gauging? Due to certain behavior of rivers the problem of gauging then is quit complex. The purpose of river gauging is to stabilize the river chan

Explain resultant force on a area of a vertical plane, Resultant Force on a...

Resultant Force on a Given Area of a Vertical Plane The resultant force is calculated from the average pressure: R = (AVERAGE Ρ)(A)

Temperature requirements for bituminous material, Question In all-purpo...

Question In all-purpose Specification for Civil Engineering Works, it details temperature requirements for bituminous material all through and after mixing. What is cause beh

CUBE STRENGTH, IN CASE CUBE IS FAIL WHAT CAN IDO

IN CASE CUBE IS FAIL WHAT CAN IDO

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