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

Advantages of continuous multiple-span deck, Q. Advantages of continuous mu...

Q. Advantages of continuous multiple-span deck over simply supported multiple-span deck? Movement joints are generally added to bridge structures to accommodate movements bec

Aggregates, effects of aggregates used in concrete

effects of aggregates used in concrete

Show the functions of sleepers in railway, Q. Show the Functions of sleeper...

Q. Show the Functions of sleepers in railway? Functions of sleepers in railway works are as below:  (i)  The primary function of a sleeper is to grip the rail to gauge and t

Defect of timber, due to defectiveseasoning and conversion

due to defectiveseasoning and conversion

Concrete mixers, what do you mean by buttering mixers

what do you mean by buttering mixers

Concrete technology, material for formwork and their specifications

material for formwork and their specifications

Integration of the strain settlement, All soils subjected to stress undergo...

All soils subjected to stress undergo strain. This will be taking place within the soil skeleton. This strain is caused by rolling, slipping, sliding and crushing at the particle c

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