Even complicated and confusing topics will be easily developed and covered if you request our help writing an essay. Place an order today!

1. Two filter beds are in a water treatment plant, with media and dimensions as follows. Water discharges into this filter bed over a weir that is set at 110.00 feet above datum. The water then flows downward through each of these filters, with an approach velocity into each of these filter beds of 0.01 ft/sec. Point A is 90.00 feet above datum, and water pressure in the pipe at A is 3.0 psi.

Parameter, units Filter B Filter C
Media type sand anthracite
Media depth, ft 3 5
Filter surface area, ft x ft 12 x 12 15 x 10
Grain diameter, ft 0.0025 0.007
Grain density, lb sec2/ft4 5 4
Porosity when treating water, unitless 0.4 0.6
Shape factor 6 7
J 6 6

For both beds, g = 32.2 ft/sec2, kinematic viscosity = 1.4 x 10-5 ft2/sec,

absolute viscosity = 2.8 x 10-5 lb-sec/ft2, density of water = 1.937 lb sec2/ft4.

All pipes are 8” in diameter. Each pipe has a control valve, set to a k of 10 (including this valve’s short pipe stub). Moreover, from filter C to point A, there is another 100-foot long 8” diameter pipe, as shown, with f = 0.03. (There is no head loss through the underdrain media).

a. What is the water level above the sand filter media in Filter B?

B. What is the water level above the anthracite filter media in Filter C?

c. Are these two water levels the same? Or different? If different, how can this be so?

2. The atomic weight of various atoms are as follows: Ca = 40, Mg = 24.3, Na = 23, K = 39.1, H = 1, O = 16, N = 14, C = 12, Cl = 35.5, S = 32. A water contains the following anionic and cationic species. You may refer to the attached periodic table. The pH is 9.5

Calcium 100 mg/L

Magnesium 120 mg/L as CaCO3

Sodium 92 mg/L

Bicarbonate 200 mg/L as CaCO3

Carbonate 27 mg/L

Sulfate 100 mg/L

a. Compute charge equivalence for all pertinent species, in meq/L

b. With the species listed, is there a charge balance? If there is only one other species, would it be chloride or potassium? How many mg/L would there be of this species?

c. Determine the total hardness as CaCO3

d. Determine the total alkalinity as CaCO3

3. Batch experiments in the laboratory at 20oC show that when the pH is 6.0 and a chlorine dose is 0.8 mg/L as Cl2, the chlorine concentration x time (Ct) required to achieve a 3-log10 removal of giardia is 39 mg/L-minute. For this reaction, = 1.072.

a. All other things being equal, what would be the Ct required when the temperature is 10oC?

b. If you have a plug flow reactor, with pH 6.0, 10oC, and 1.2 mg/L chlorine as Cl2, what would be the Ct required to achieve a 2-log10 inactivation of giardia?

c. If you have a CSTR reactor, with pH 6.0, 10oC, and 1.2 mg/L chlorine as Cl2, what would be the Ct required to achieve a 2-log removal of giardia.

d. Which would you choose to achieve giardia inactivation, plug flow or CSTR flow?

SOURCE: allaplusessays.com
All A+ Essays – PLACE YOUR ORDER HERE: https://allaplusessays.com/order

Havent found the Essay You Want?
We Can Assist
The Paper is Written from Scratch Specifically for You

    WHY allaplusessays.com

  • Confidentiality & Authenticity Guaranteed
  • Plagiarism Free Content Guarantee
  • All A+ Essays Guarantee Timely Delivery of All Papers
  • Quality & Reliability
  • Papers Written from Scratch and to Your Instructions
  • Qualified Writers Only
  • All A+ Essays Allow Direct Contact With Your Writer
  • Using allaplusessays.com Means Keeping Your Personal Information Secure
  • 24/7 Customer Support

GET QUALITY ESSAY HELP AT: https://allaplusessays.com/order

ORDER A PAPER WRITTEN FROM SCRATCH AND TO YOUR EXACT INSTRUCTIONS (allaplusessays.com – For 100% Original Content)

testimonials icon
Identify two common reasons why organizations restructure, and discuss the risks and benefits of restructuring. Do not use reasons that have alr...
testimonials icon
 What are common experiences people from this subculture having doing business within corporate america/with m...
testimonials icon
Research at least two articles on the topic of managerial issues of a networked organization. Write a brief synthesis and summary of the two articl...
testimonials icon
In this assignment, you will review your current level of adjustment.Write a one to two (1-2) page paper in which you:balancing...
testimonials icon
 Image Analysis AssignmentInstructions: Choose one of the two themes listed below to do an online search th...
testimonials icon
1. Please DO NOT USE EXCEL OR ANY COMPUTER SOFTWARE OR WEBSITE to solve the problems or to draw graphs. 2. Show all work. 3...
testimonials icon
Business Ideas for Nurse Practitioner Entrepreneurs Presentation Nurse practitioners can practice in many...
testimonials icon
 Resources: Risk and Quality Management Tools MatrixImagine you are a quality leader...
testimonials icon
Social Influence:High parental outlooks: were put on him: “the aspiration to win was instilled in me. ” Having idealised his househol...
testimonials icon
Select a topic for your Topic 3 Executive Summary assignment. Post your idea and basic thoughts about the...
testimonials icon
Political Activism Many careers are influenced by government regulations. Health care is one of those careers, similar to education, where the work...
Calculate Price

When you use PaperHelp, you save one valuable — TIME

You can spend it for more important things than paper writing.

Approx. price
$65
Order a paper. Study better. Sleep tight. Calculate Price!
Created with Sketch.
Calculate Price
Approx. price
$65