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

Millennium miles, Construction planning millennium miles

Construction planning millennium miles

Som, Maximum thermal stress in circular tapering section is

Maximum thermal stress in circular tapering section is

Computer programming, compare 2 numbers and print either the message identi...

compare 2 numbers and print either the message identifying the greater than number(or) the message starting that both number are equal

Trusses design, does the truss pitch relate to the building''s height?

does the truss pitch relate to the building''s height?

Define wastewater treatment processes, Define Wastewater treatment Processe...

Define Wastewater treatment Processes The wastewater treatment processes that we design mimic the processes that occur in the nature (for example processes that occur in a flow

Stabilised pavement layers, Stabilised Pavement Layers: Soil stabilis...

Stabilised Pavement Layers: Soil stabilisation is the process of treating a soil in such a manner as to alter and improve its properties for use as a pavement layer on sub-gr

Explain the terms void ratio, (a) Distinguish among Black cotton soil and L...

(a) Distinguish among Black cotton soil and Laterite from an engineering point of view. (b) Explain the terms 'Void ratio', 'Degree of saturation' and 'Water content', define th

Shear stress distribution on sections, is shear stress distribution on I an...

is shear stress distribution on I and T sections are same????

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