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 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

Engineering Mechanics, the jet transport B is flying north with a velocity ...

the jet transport B is flying north with a velocity vB = 600 km/h when a smaller aircraft A passes underneath the transport headed in the 60 degree direction shown. To passengers i

Auto cad drawing , im looking for someone to do drawing in autocad 3D 2013 ...

im looking for someone to do drawing in autocad 3D 2013 with report

#civil, what is whole circle barring

what is whole circle barring

Enumerate the variation in tendon stress, Enumerate the Variation in tendon...

Enumerate the Variation in tendon stress In post-tensioned construction, several tendons are simultaneously stretched and anchored at the ends. It is assumed that all tendons

Dynamic force transfer test of shock transmission unit, Define Dynamic Forc...

Define Dynamic Force Transfer Test of Shock Transmission Unit? This test mainly prove the lock up capability of the device. The STU shall be loaded in tension from zero to the

Chain survey, Instruments used in chain survey

Instruments used in chain survey

Explain ductile iron pipes and mild steel pipes, Ductile iron pipes vs. mil...

Ductile iron pipes vs. mild steel pipes as pressurized pipelines For water main pipe size less than 600mm, ductile iron is generally used since internal welding for steel pipe

Determine the characteristic load for structure, Determine the Characterist...

Determine the Characteristic Load for structure The Load, which has 95 percent probability of not being exceeded during the life of a structure, is considered as characteristic

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