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

Define the highlights of critical path method, Define the Highlights of Cri...

Define the Highlights of Critical Path Method A network analysis technique used to predict project duration by analyzing which sequence of activities has the least amount o

Changeable depth bridge decks, Question What is the sucker deck principle f...

Question What is the sucker deck principle for changeable depth bridge decks ? Answer For a variable depth bridge deck, depth of continuous multi-span bridge deck is greater tha

Varignon theorem, how to prove varignon theorem in easiest way

how to prove varignon theorem in easiest way

Distomat, definition,old&new modern&difference

definition,old&new modern&difference

Define major ions present in the water, Define Major Ions present in the wa...

Define Major Ions present in the water  Cations:  Calcium, Magnesium, sodium, potassium Anions: Bicorabonate, sulfate, chloride Other ions present: Iron. Manganese, Fluor

What is immediate settlement, Q. What is Immediate Settlement? Strain i...

Q. What is Immediate Settlement? Strain in all coarse grained, dry or partly saturated fine grained soils occur immediately after the application of stress. Hence, this change

Maintenance of earth roads, Maintenance of Earth Roads: The main task...

Maintenance of Earth Roads: The main task in maintaining the earth road is to ensure that cross-section is intact and is free from rutting, depressions and corrugations, and

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