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

Cement, Why we mixm pozzolona in cement

Why we mixm pozzolona in cement

What is sedimentation tank, Q. What is Sedimentation tank ? This is a p...

Q. What is Sedimentation tank ? This is a process in which the water is passed through bases or tanks in which the velocity of water is so reduced or water is given a period of

Sign convention, i am very confuge in sign convention of bending moment,rea...

i am very confuge in sign convention of bending moment,reaction and shear force in moment distribution method so give any suitable anwer with couple?

Sway porta frame, how to sway portal frame both end fixed due to eccentric ...

how to sway portal frame both end fixed due to eccentric loading with diagram

Explain transpiration and infiltration, Explain Transpiration and Infiltrat...

Explain Transpiration and Infiltration Transpiration: The part of evaporation in which water vapor enters the atmosphere through the plants. The "transpired" water originated

Mini projects, is there any innovative projects in disaster management ?

is there any innovative projects in disaster management ?

Paint, different types of paints?

different types of paints?

Derive, Derived condition of economic span of bridge

Derived condition of economic span of bridge

Define equipments for inspection of steel/cast iron, Define Equipments and ...

Define Equipments and tools for Inspection of Steel/Cast Iron Substructures? To ensure thorough inspection, the area must be cleared of all marine growth. Hand tools such as wi

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