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

Cutting edge in well foundation, Q. Cutting edge in well foundation? Th...

Q. Cutting edge in well foundation? The function of cutting edge on well foundation is basically to cut through the earth which being sunk. The angle of well curb pushes the ea

Fluid mechanics, Cd of venturimeter is more than that of orificemeter

Cd of venturimeter is more than that of orificemeter

Calculate the surface dimensions of sedimentation tank, Calculate the surfa...

Calculate the surface dimensions of Sedimentation Tank A treatment plant upgrade calls for design of sedimentation basins to handle a flow rate of 8 MGD. The basins are for a T

Shallow foundations, The drainage system of a cantilever wall shown in Figu...

The drainage system of a cantilever wall shown in Figure As 1 became blocked after a heavy rainstorm and the groundwater level, which was originally below the base, rose to1.5 (m)

Introduction to engineering mechanics, Deternim the angle A for which the m...

Deternim the angle A for which the moment of the 500N force is maximum about a point o. also find the maximum momentum

Damp proofing, how to remove dampness in mud houses?

how to remove dampness in mud houses?

Properties of stones, Properties of Stones The following properties of ...

Properties of Stones The following properties of the stones should betake into account before choosing them for engineering works: Structure: The structure of the stone ca

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