User Account

All Pages

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

Procdures of setting out, how to set out&excavate steps

how to set out&excavate steps

Determine about the tensile stresses, Determine about the tensile stresses ...

Determine about the tensile stresses Unifody prestressed members designed for equal flexure in opposite directions,without permitting tensile stresses under working loads, requ

Steping footing, What are the types of foundation. With figure

What are the types of foundation. With figure

Design of Steel structures, Problems on Roof trus

Problems on Roof truss

State the effect of shape on the bearing capacity, State the effect of shap...

State the effect of shape on the bearing capacity. Differentiate among safe bearing capacity and allowable soil pressure. Write critical notes on (i) foundations on black cot

Compute the porosity of the initial soil sample, A completely saturated sam...

A completely saturated sample of clay has a volume of 31.25 cm 3 and a weight of 0.5866 N. The same sample after drying has a volume of 23.92 cm 3 and a weight of 0.4281 N. Compu

Determine the strain compatibility method, Determine the Strain Compatibili...

Determine the Strain Compatibility method For estimating the ultimate strength of prestressed concrete members in flexure, 'Strain Compatibility method' may be used. For calcul

Cement, List the ingredients of cement And their functions

List the ingredients of cement And their functions

Civil Engineering Drawing, Slow Sand Filter drawing using AutoCAD

Slow Sand Filter drawing using AutoCAD

Compute the negative skin friction of the pile group, A square pile group o...

A square pile group of 9 piles passes by a recently filled up material of 4.5 m depth. The diameter of the pile is 30 cm and pile spacing is 90 cm centre to centre. If the unconfin

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd