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

Rectangular tie, using an optical square how would you perform a rectangula...

using an optical square how would you perform a rectangular tie?

Mechanics, laws of solid friction?

laws of solid friction?

Define contaminants - underwater inspection of bridge, Define Contaminants ...

Define Contaminants - underwater inspection of bridge? There are various substances that may be inadvertently incorporated into the concrete matrix (e.g. glass, coal, gypsum),

Soil in road construction, Soil in Road Construction: Road Embankme...

Soil in Road Construction: Road Embankment and Sub-grade Soil is mainly used as the material for constructing a road embankment. The road embankment supports the road

Estimating, a 45 cm deep roof beam is provided on 30 cm wall of a room size...

a 45 cm deep roof beam is provided on 30 cm wall of a room size 3.0m*5.0m . calculate the quantity of steel required in beam on percentage basis.

Beam stress, what is the bending stress for a simply supported beam with th...

what is the bending stress for a simply supported beam with three equal concentrated loads that are equally spaced?

Construct the correct network for project, A project requires that activiti...

A project requires that activities A and B can be started independently and activities C and D are independent but can be started after A and B have been completed. Activity E can

Ballast and sub-ballast aggregates, I want to check the grammer of report a...

I want to check the grammer of report and edit it in better sentances , reduce the Plagiarism & edit the reference to havaerd style

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