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

Brigdes, infomation about differnt brigdes

infomation about differnt brigdes

Bridge, Explain economical span if bridges

Explain economical span if bridges

Curves, procedure on conducting curves in field

procedure on conducting curves in field

Explain the terms void ratio, (a) Distinguish among Black cotton soil and L...

(a) Distinguish among Black cotton soil and Laterite from an engineering point of view. (b) Explain the terms 'Void ratio', 'Degree of saturation' and 'Water content', define th

Two pegs test, the distance between two pegs M and N is 7,063 as measured o...

the distance between two pegs M and N is 7,063 as measured on a slope. the height measured on the pegs are that M=1.814M and N=0.5687M

How is skin friction and point resistance of a pile computed, Describe the ...

Describe the basic difference in the bearing capacity computation of shallow and deep foundations. How are skin frictions and point resistance of a pile computed?

Constraction, sir what is means by share force

sir what is means by share force

Define sounding or sensing devices, Define Sounding or Sensing Devices? ...

Define Sounding or Sensing Devices? Sounding devices are effective in checking scour in the streambed adjacent to a bridge. Although sounding/sensing devices can be used indepe

Mechanics, How to prove varignon theorem in easiest way

How to prove varignon theorem in easiest way

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