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 absolute pressure, Absolute pressure is simply the addition of the ...

Absolute pressure is simply the addition of the observed gage pressure plus the value of the local atmospheric pressure.

Ecology, subdivisions of ecology

subdivisions of ecology

Solid block -calculating for design mix, Good evening sir, solid block''s d...

Good evening sir, solid block''s design mix calculated generally please explain and derive .

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

Main principle of post-grouting for mini-piles, Question What is main p...

Question What is main principle of post-grouting for mini-piles? Answer During course of post-grouting , a tube with a hole at its base is lowered into pile and g

Quality control in flexible pavements, Quality Control in Flexible Pavement...

Quality Control in Flexible Pavements: The quality control needed for Flexible Pavements covers the following tests : (a) Density and Moisture content of sub-grade. (b)

Overhanging beams, Do we take the whole length (including the over hanging ...

Do we take the whole length (including the over hanging portion when we say the "whole span" of th beam ?

What do you mean by distressing, Q. What do you mean by Distressing? Di...

Q. What do you mean by Distressing? Distressing is the operation under taken with or with out rail tensors to secure stress free condition in the LWR at a desired rail temperat

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

i require a workquestion #Minimum 100 words accepted#

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