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

Road location in dune areas, Road Location in Dune Areas: The followi...

Road Location in Dune Areas: The following principle should be observed in locating a road in dune areas : (a) Align a road where sand is covered by vegetation. (b) Sel

Steel overlap in columns, where we can overlap steel in columns if we use ...

where we can overlap steel in columns if we use 50 or 60 bar diameter as overlap length.

What is n-value of standard penetration test, Define and discuss the variou...

Define and discuss the various factors that help decide the number and depth of bore holes needed for subsoil exploration. What is 'N-value' of Standard Penetration Test? How do

Function of a separation membrane amid concrete pavement, Question What...

Question What is main function of a separation membrane amid concrete pavement slab and sub-base ? Answer Division membrane between concrete pavement slab and sub-bas

Define unit hydrograph - hydrology, Define Unit Hydrograph UNIT HYDROGR...

Define Unit Hydrograph UNIT HYDROGRAPH: The hydrograph developed for a drainage basin (watershed) from the runoff of a 1 in or 1 cm storm. It is the base hydrograph from which

Plane table surveing, in plane table surveying which activity is done first...

in plane table surveying which activity is done first whether centering or levelling?

Sir I want to do assignments, sir I want to do assignments which were provi...

sir I want to do assignments which were provided by you sir could you please check with that

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