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

Explain the rippl diagram or mass diagram, Explain the Rippl Diagram or Mas...

Explain the Rippl Diagram or Mass Diagram For a potable water reservoir, it is the simultaneous plots of the cumulative inflow and cumulative water consumption/demand, termed "

Illustrate concept of filter design, Q. Illustrate Concept of filter design...

Q. Illustrate Concept of filter design? The material used for filter should satisfy the following normal criteria a. Filter material is more pervious than the base material

Explain the underwater problems and material defects, Explain the Underwate...

Explain the Underwater Problems and Material Defects? The major bridge construction materials are steel and concrete. In the past, stone and brick masonry, with lime mortar as

Define the term- erection stresses, Define the term- erection stresses ...

Define the term- erection stresses The creep loss due to live load stress, erection stresses and other stresses of short duration may be ignored. The loss of prestress due to

Difference between compaction and consolidation of soil, Briefly explain th...

Briefly explain the difference between compaction and consolidation of soil. What is the effect of compaction on soil properties? Ans.- Compaction - The process of increas

Can u give me a sample assignment, im newer to the courses so i would like ...

im newer to the courses so i would like to know about the assignment types. in this case can u please show me a sample assignment?

In marine pile type of steel tubular piles, Question In marine pile typ...

Question In marine pile type of steel tubular piles with reinforced concrete infill, least toe level is frequently specified in contract drawings. What is the purpose in your v

What do you mean by internal fiction, Q. What do you mean by Internal ficti...

Q. What do you mean by Internal fiction? Absorptive materials have some elastic fibrous or porous structures that would be extended and compressed at the time of sound wave pro

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