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 cyclic force transfer test of shock transmission unit, Define Cyclic...

Define Cyclic Force Transfer Test of Shock Transmission Unit? This test is specified to prove that the STU would function as intended during a seismic event. The STU shall be t

Stress, stress and there types

stress and there types

What is core-barrel samplers, Q. Core-barrel samplers: single tube sampler ...

Q. Core-barrel samplers: single tube sampler vs. double tube sampler vs. triple tube sampler Core barrel samplers are initially designed to sample rock. In single tube sampler

#titlecivil war.., how can you know that the civil war real.

how can you know that the civil war real.

Ghgh, Ask quhestion #Minimum 100 words accepted#

Ask quhestion #Minimum 100 words accepted#

Float or slack of an activity is positive or negetive, 1. What take place w...

1. What take place when float or slack of an activity is positive Ans: It represents a situation where extra resources are available and the completion of the project is not de

Seive analysis, what is sieve analysis? expalin its procedure.

what is sieve analysis? expalin its procedure.

Explain the purpose of embedding puddle flange, Purpose of embedding puddle...

Purpose of embedding puddle flange inside the walls of closed valve chambers When valves are closed to stop water flow in a pipeline, a thrust is produced along the direction o

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