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

Classification of timber based on modulus of elasticity, Classification Bas...

Classification Based on Modulus of Elasticity: Young's modulus is resolute by conducting bending test. On this basis timber is classified as following: Group A: E = 12.5 kN

Survey, how to draw longitudinal profile

how to draw longitudinal profile

Maximum shear stress, Maximum shear stress: The state of stress at a c...

Maximum shear stress: The state of stress at a critical point of a strained solid is given by σ x = 70 kN/mm 2 , σ y = - 50 kN/mm 2 and τ xy = 45 kN/mm 2 . If the strength

Water transportation, Water Transportation: Water transport, in its va...

Water Transportation: Water transport, in its various forms, is one of the most efficient forms of transport, because of low fuel consumption, low environmental pollution and

Survey, How to find included angle during partical

How to find included angle during partical

Aircraft, what is aircraft maintenance manual?

what is aircraft maintenance manual?

Show suspended impurities in water, Q. Show Suspended Impurities in water? ...

Q. Show Suspended Impurities in water? The solid particles which are dispersed in water are referred as suspended Impurities. These are microscopic as under-

Angle&direction, whate does mean bearing?with example

whate does mean bearing?with example

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