Compute the do saturation concentration, Other Subject

Assignment Help:

The downstream reach of the Sacramento River in California receives the treated effluent from the City of Sacramento at mile point 53, the single significant input in this region.

The longitudinal profiles of flow, cross-sectional area, depth, biochemical oxygen demand and dissolved oxygen are shown below and in the attached spreadsheet for a five-day period in the fall of 1960. Assume the water temperature is 15 oC. There are flow withdrawals as shown. The table of BOD, DO, and interpolated stream data are listed below and are included in the spreadsheet.

1. Use the VBA program that you developed in Assignment 5 that computes the BOD and DO solutions in a series of segments with constant parameters. Document the code. Include the equations being solved in the comments. Include a print out of the code as part of this exam.

2. For each segment of the model compute the reaeration coefficient using the O'Connor Dobbins formula with temperature correction

3. For each segment of the model compute the DO saturation concentration using the equation in Chapra

4. In your spreadsheet, set up plots of BOD5 and DO data (see plots below) that will be used to that compare model output to data

5. Check the code using a constant parameters for every segment model and the analytical solutions for BOD and DO. Use the geometry in segment 1 of the Sacramento River

6. Fit the model to the Sacramento river data as follows: Use the model developed in questions 1-3 and the plots developed in question 4. Use a single kd. Estimate the parameters that produce the best fit of both the BOD and DO data. Use an "eyeball" fit, i.e. play around with the parameters until the fits are "reasonable" for both BOD and DO. After approximately mile point 25, the river becomes more like an estuary and the stream model no longer applies. So ignore the data after milt point 25. Fit the following parameters

a. The initial BOD5 and DO deficit concentrations at mile 60.

b. The Sacramento treatment plant BOD5 loading rate in lbs/day at mile 53

c. The ultimate to 5 day BOD ratio

d. A single deoxygenation coefficient kd(/day)

7. Compare the values that you obtain to values that are reasonable for primary effluent.

8. Use two deoxygenation coefficients: one for the upstream sections 1-4 and another for the downstream sections after the beginning of flow withdrawals. Try various locations for the starting point of the second kdthat achieves a better fit of the BOD and DO data. Estimatea. The initial BOD5 and DO deficit concentrations at mile 60.

b. The Sacramento treatment plant BOD5 loading rate

c. The ultimate to 5 day BOD ratio

d. The two deoxygenation coefficients kd1 and kd2 and the location where kd2 starts

9. Can you justify the need for the two kd's?

10. Graduate Students only

a. Do the same calculations in Problem 6 using the finite difference program that you developed in Assignment 5. Use the varying  parameters rather than the
constants for the piecewise constant solution in Problem 6

b. Compare the two solutions. Analyze the differences and comment on the significance of the differences.


Related Discussions:- Compute the do saturation concentration

Government, what were the articles of conferation and why according to Geor...

what were the articles of conferation and why according to George Washington were they a faluire

HIV/AIDS, some myths and misconceptions that still prevail amongst many com...

some myths and misconceptions that still prevail amongst many community members concerning the transmission of HIV

Hrm assigment, IMAGIN YOUR SELF AS A HR MANAGER OF TOUR OPERATING AGENCY FR...

IMAGIN YOUR SELF AS A HR MANAGER OF TOUR OPERATING AGENCY FROM MALDIVES. WHAT STEPS WOULD YOU CONSIDER WHILE RECRUTING NEW SALES FORCE FOR YOUR ORGANIZATION?

Switching system.., a fully connected network support full duplex communica...

a fully connected network support full duplex communication using unidirectional links so the total no. of links in a such a network n mode is given by 2*nc2

Museum studies, Museum Studies : A museum is an institution that conserves ...

Museum Studies : A museum is an institution that conserves a collection of artifacts and other objects of, cultural, artistic, scientific or historical significance and makes them

Pancreas, The pancreas secretes digestive enzymes into the duodenum, the fi...

The pancreas secretes digestive enzymes into the duodenum, the first segment of the small intestine. These enzymes break down protein, fats, and carbohydrates. The pancreas also ma

Science, can u help me with density, bouyancy, and pressure?

can u help me with density, bouyancy, and pressure?

Environmental management systems, Do your experts should provide Environmen...

Do your experts should provide Environmental Management Systems Questions assignment help? I get a new assignment and I m stuck in my assignment I need urgent help in my college as

Linear Convolution in DSP sums, how to slove linear convolution when limits...

how to slove linear convolution when limits are negative to positive .provide with example

Weathering, how does granular disintegration occur

how does granular disintegration occur

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