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

Lintel, classification of lintel

classification of lintel

Parabola, how to draw a parabola

how to draw a parabola

Designing of access ramps for drainage channels, Question Designing of ...

Question Designing of access ramps for drainage channels, why must direction of access ramps is sloping down on the way to downstream ? Answer In designing of access

Binders - cement, Binders : Cement: Cement as a Binder Cement...

Binders : Cement: Cement as a Binder Cement is one of the main ingredients of concrete. When cement sets (with the addition of water), it forms a paste and binds the

CAD IN CIVIL ENGINEERING DRAWING LAB, EXPLAIN THE PROCEDURE FOR PREPARATIO...

EXPLAIN THE PROCEDURE FOR PREPARATION OF DRAWING USING AUTOCAD FOR RAPID SAND FILTER

Assignment, I need to find support reactions at O for the beam with a distr...

I need to find support reactions at O for the beam with a distributed load, a 6 kN moment couple at A and a 3 kN axial load as shown in picture.

Explain energy grade line (egl), Explain Energy Grade Line (EGL) Graph ...

Explain Energy Grade Line (EGL) Graph of the sum of the potential, pressure and kinetic energies along a pipe or open channel. Energies are plotted along the y-axis above a dat

Discuss about the fibre reinforced concrete, Discuss about the fibre reinfo...

Discuss about the fibre reinforced concrete Tensile strength of concrete may be improved by using a higher grade of concrete or by using special concretes such as fibre reinfor

Retaining wall, whether the wall has adequate sliding resistance

whether the wall has adequate sliding resistance

Plane table, what is traversing plane table?

what is traversing plane table?

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