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

Define construction damage - underwater inspection of bridge, Define Constr...

Define Construction damage - underwater inspection of bridge? Construction damage can result from improper procedures during the construction phase.  Some examples are: -  P

What is switch and expansion joint, Q. What is Switch and Expansion Joint? ...

Q. What is Switch and Expansion Joint? Switch Expansion, Joint (SEJ) is an expansion joint installed at each end of LWR/CWR to permit expansion/contraction of the adjoining bre

Define project scheduling - types of methods, Define Project Scheduling - T...

Define Project Scheduling - Types of Methods Project Scheduling - Distinction between the Major Types of Schedule Diagrams Precedence Diagrams (PDM)   a) Activ

State the importance of structural element, State the importance of structu...

State the importance of structural element If this structural element is used as a beam element, subjected to self load and other imposed transverse loads, then the bottom fibr

Chain surveying, Chain Surveying: In the chain surveying, you have stu...

Chain Surveying: In the chain surveying, you have studied the basics of chain surveying. In chain surveying, various equipment and instruments are used for measuring distances

How do we calculate absolute pressure, Absolute is equivalent to gauge pres...

Absolute is equivalent to gauge pressure plus atmospheric.

Estimate the minimum electric power, The sketch shows a common consumer pro...

The sketch shows a common consumer product called Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (diameter d = 3 mm, temperature T = 10 °C)

Define the types of pump performance curves, Define the types of Pump Perfo...

Define the types of Pump Performance Curves Two types of pump performance curves: x-axis = flow rate; y-axis = head (TDH). Characteristic curves: Provided by the pump m

..zero energy building, this is our final year project .please help me to g...

this is our final year project .please help me to guide about it

Explain the classification of solid waste, Explain the Classification of So...

Explain the Classification of Solid Waste  Solid waste can be classified in several different ways.  Putrescible waste - Animal and Vegetable waste From Cooking and

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