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

REport, CASTE DISCRIMANIMATION

CASTE DISCRIMANIMATION

Proctor test for GSB material, what is the procedure for gsb proctor test f...

what is the procedure for gsb proctor test for matrial sampling for lab density

Determine the geometrical parameters for layout, Q. A crossover is to be la...

Q. A crossover is to be laid between two parallel B. G. tracks at 4.725 m centers by using 52 kg, 1 in 8½ and 1 in 12 turnouts. For this layout, i. Determine the main geometrica

Define the categories of corrosion of steel structures, Define the Categori...

Define the Categories of Corrosion of steel structures? Corrosion of steel structures can be classified as under: -   Atmospheric corrosion -   Underwater corrosion -

Report, report on lintels and arches

report on lintels and arches

Spalling reinforcement for pre stressing works, Spalling reinforcement for ...

Spalling reinforcement for pre stressing works in anchor blocks Reinforcement of anchor blocks in prestressing works usuallycomprises equilibrium reinforcement, bursting reinfo

structure analysis 2, what is ild for indeterminate beam and explain its p...

what is ild for indeterminate beam and explain its procedure

Settlement due to reduction in volume of soil, Q. Settlement due to Reducti...

Q. Settlement due to Reduction in Volume of Soil? The weight of the structure causes reduction in volume of soil due to expulsion of pore water from the voids. This reduces the

Keywords related to modern trends in transportation, Keywords related to Mo...

Keywords related to Modern Trends in Transportation: Exclusive Bus Lane :           A lane reserved exclusively for buses. High Capacity Bus System            :

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