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

Dissimilarities between pipe culverts and box culverts?, Question What are ...

Question What are main dissimilarities in applications between pipe culverts and box culverts ? Answer Essentially, culvert resources covered hydraulic structure that conveys fl

Fluid mechanics , i have three civil engineering fluid mechanics. 1 manomet...

i have three civil engineering fluid mechanics. 1 manometer problem 2 estimate the discharge for a channel 3 pipe system - direction of flow in line and what the value of flow in l

Wbm work, ratio of moorum and aggregate

ratio of moorum and aggregate

Joint continuity influenced by inclined bridge deck, Q. Joint continuity in...

Q. Joint continuity influenced by inclined bridge deck? Bearings are generally designed to sit in a horizontal plane so as to avoid the effect of extra horizontal force and une

Show the excessive movement joints in bridges, Q. Show the Excessive moveme...

Q. Show the Excessive movement joints in bridges? Movement joints are generally added to bridge structures to accommodate movements because of dimensional changes arising from

Gts bench mark, Gts bench mark in thane district maharashtra

Gts bench mark in thane district maharashtra

What is dead weight, Dead weight Dead loads are the weight of perma...

Dead weight Dead loads are the weight of permanent components of the structures such as the weight of the elements and spheres, casing weight, weight of the false ceiling a

Project data , finding the mean ,mode and mediam

finding the mean ,mode and mediam

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