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

Wmm, why use wmm upon gsb can be laid dbm directly upon gsb

why use wmm upon gsb can be laid dbm directly upon gsb

Constraction, sir what is means by share force

sir what is means by share force

Write important factors that affect permeability of a soil, Determine the i...

Determine the important factors that affect the permeability of a soil. A permeameter of 8.2 cm diameter having a sample of soil of length 35 cm. It can be used either for const

Continuous flow systems, Continuous Flow Systems: Transport by road, r...

Continuous Flow Systems: Transport by road, rail, air or ships takes place in vehicles which move along a path at intervals. As against this, continuous flow systems are those

Consolidation settlement, The integration of strain over the depth is settl...

The integration of strain over the depth is settlement. The method of producing the settlement is non-recoverable when the intensity of stress is removed. Hence, a permanent reduc

Types of stone masonary, random rubble coursed, suare rubble coursed and un...

random rubble coursed, suare rubble coursed and uncoursed, polygonal walling, flint walling

Surveying, how prepared for surveying?

how prepared for surveying?

Projects, GIS AND REMOTE SENSING

GIS AND REMOTE SENSING

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