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

Define latitude - transportation, Define Latitude - Transportation Lati...

Define Latitude - Transportation Latitude of a line is the distance that the line extends in a north or south direction. A line that runs towards north has positive latitude; a

Raport, CASTE DISCRIMANIMATION

CASTE DISCRIMANIMATION

Approach span to its neighbouring inner spans, Question-Why is span length...

Question-Why is span length ratio of end span, approach span to its neighbouring inner spans typically about 0.75?   Answer-From aesthetic point of view, odd number of span

Environmental engineering., Solve the following problems and show all steps...

Solve the following problems and show all steps and calculations clearly: 1. A water treatment plant uses a dual media filter. The two media used are: a) Anthracite coal with ef

Masonry, Sketches for English bond, Stretcher bond, Header bond, Flemish bo...

Sketches for English bond, Stretcher bond, Header bond, Flemish bond in first & second layer plan, elevation and 3 dimensional view of brick bond.

Describe the behaviour of pre and post-tensioned members, Describe the beha...

Describe the behaviour of pre and post-tensioned members The behaviour of pre and post-tensioned members under imposed loads may be different, especially when the cracking patt

Tack rivet, tack rivet figures with connections

tack rivet figures with connections

Define installation of pot bearings, Define Installation of Pot Bearings? ...

Define Installation of Pot Bearings? In a sliding POT bearing, positive fixing to the main structure may not be required if the bearing is always subjected to adequate vertical

Example of bars of varying cross section, Example of Bars of Varying Cross ...

Example of Bars of Varying Cross Section: In the numerical example under consideration δ = 750 × 300/( π/4) × 200 2 × 60 +750 × 400/(π/4) × 135 2 × 60 + 750 × 200/(π/4)

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