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

Total station, describe in detail the various parts of a total station

describe in detail the various parts of a total station

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

Varignon theorem, how to prove varignon theorem in easiest way

how to prove varignon theorem in easiest way

Explain working of ultrasonic system for concrete elements, Explain the wor...

Explain the working of Ultrasonic System for Concrete Elements? Ultrasonic methods can be used underwater for overall assessment of the strength of concrete based on sound velo

Material engineering assignment, select three materials metal and non meala...

select three materials metal and non mealat at least one of the selected materials shold change its property

Designing of corbel beams in a pump station, Question In designing of ...

Question In designing of corbel beams in a pump station , why are shear links designed in top 2/3 of section? What is general advice on designing? Answer Corbel

Calculate the settlement at the centre of the mat, A mat foundation of 15...

A mat foundation of 15 m x 15 m and weighing 20000 N/m 2 is to be constructed on the surface of a soil strata. The profile is given in Figure. The number of squares enclosed i

#title.cement factor, Aplease provide tables for each design mix and also t...

Aplease provide tables for each design mix and also the, high early strengh.l thanks

Depth of boring for multi-storeyed building, Depth of Boring  for Multi-st...

Depth of Boring  for Multi-storeyed Building Peck has recommended that first drill hole is to be made up to depth at which the presence of a thick layer of soft clay with a hig

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