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

Calculate the specific gravity of the soil particles, A piece of clay taken...

A piece of clay taken from a sampling tube has a wet weight of 1.553 N and volume of 95.3 cm 3 . After drying in an oven for 24 hours at 105°C, its weight 1.087 N. Suppose the spec

Deck that you can park a car under, I wish to build a deck that is 4.7m wid...

I wish to build a deck that is 4.7m wide and 7m long alongside my house. I need to park a car under it so there can be no supports in the middle. Attached to the wall on one side a

Explain the equation for length of spiral curve, Explain the Equation for L...

Explain the Equation for Length of Spiral Curve Length of Spiral Curve can be calculated using the following equation L s = 3.15V 3 /RC Where: V - Design Speed in MPH

Velocity distribution and flow formulae, Q. Velocity distribution and flow ...

Q. Velocity distribution and flow formulae? Variation in velocity along a vertical in channel cross section is known to follow logarithmic distribution, maximum velocity being

Number of segments for segmental linings in tunnelling, Q. Number of segmen...

Q. Number of segments for segmental linings in tunnelling? For the construction of tunnels by segmental linings, choice of the number of segments affects the durability and cos

Mechanics of solids assignment, What will be the cost of Mechanics of solid...

What will be the cost of Mechanics of solids assignment consisting of 150 questions of 6 marks

Steel work design, 1) A building constructed from steelwork requires the fo...

1) A building constructed from steelwork requires the following sections to be designed: a. A beam carrying a characteristic permanent load of 11kN/m and a characteristic variable

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