1. You are working for the Fish and Wildlife Service. They are concerned about the impact...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. You are working for the Fish and Wildlife Service. They are concerned about the impact of a new industrial discharge on the fish population of a local river. The river in question has a flow of 5 cubic meters per second, an average depth of 3 meters, an average width of 10m, and a chloride concentration of 5,000 mg/L. Upstream of the discharge the river has an ultimate BOD of 7 mg/L and the ultimate BOD of the waste stream is 80 mg/L. The anticipated flow rate of the waste is 0.8 m³/s. For a summer season (average water temperature of 18°C) you can assume that the upstream oxygen deficit is 1 mg/L. Prior to your employment the deoxygenation rate coefficient was experimentally determined to be Q.23 day. a. Using a spreadsheet i) Calculate and plot the oxygen deficit of this river for a distance of 100 miles. Print out the spreadsheet with values as well as the graph. ii) Plot the dissolved oxygen level as a function of distance downstream. Suggestion: - set up the spreadsheet so you can alter the equation parameters. Make the formula reference fixed cells where the parameter values are stored. b. What happens to the maximum oxygen deficit (in location and magnitude) i). If the river flow doubles? ii) If the waste ultimate BOD is halved? c. From what you have read in the text, will fish populations be threatened under any of these scenarios? 1. You are working for the Fish and Wildlife Service. They are concerned about the impact of a new industrial discharge on the fish population of a local river. The river in question has a flow of 5 cubic meters per second, an average depth of 3 meters, an average width of 10m, and a chloride concentration of 5,000 mg/L. Upstream of the discharge the river has an ultimate BOD of 7 mg/L and the ultimate BOD of the waste stream is 80 mg/L. The anticipated flow rate of the waste is 0.8 m³/s. For a summer season (average water temperature of 18°C) you can assume that the upstream oxygen deficit is 1 mg/L. Prior to your employment the deoxygenation rate coefficient was experimentally determined to be Q.23 day. a. Using a spreadsheet i) Calculate and plot the oxygen deficit of this river for a distance of 100 miles. Print out the spreadsheet with values as well as the graph. ii) Plot the dissolved oxygen level as a function of distance downstream. Suggestion: - set up the spreadsheet so you can alter the equation parameters. Make the formula reference fixed cells where the parameter values are stored. b. What happens to the maximum oxygen deficit (in location and magnitude) i). If the river flow doubles? ii) If the waste ultimate BOD is halved? c. From what you have read in the text, will fish populations be threatened under any of these scenarios?
Expert Answer:
Answer rating: 100% (QA)
a i The oxygen deficit of this river can be calculated by using the deoxygenation rate coefficient 223 dax1 and the parameters listed above Using a sp... View the full answer
Related Book For
Posted Date:
Students also viewed these accounting questions
-
You are working for the county health department this summer, and your job is to regularly survey the local beaches for microbial contamination. a. Describe the tests you may use to analyze the water...
-
You are working for the small accounting firm, CPA Plus, and your boss, Bradford Trask, wonders whether your company could produce podcasts for its clients without professional help. He doesn't know...
-
Question 2 (20 marks) You are working for a fund that invests actively in different investment sectors. Analysts at your firm have produced the following estimates of sector portfolio (annualized)...
-
Zainab company has sold goods on credit RO 55,000 on 31st December 2020 and received RO 15,000 towards credit sales. The company had debit balance of RO 5500 and the balance in accounts receivable...
-
How do labor laws differ among other cultures and countries?
-
An oil pump is drawing 35 kW of electric power while pumping oil with r = 860 kg/m3 at a rate of 0.1 m3/s. The inlet and outlet diameters of the pipe are 8 cm and 12 cm, respectively. If the pressure...
-
Determine if the column can support the eccentric compressive load of \(1.5 \mathrm{kip}\). Assume that the ends are pin connected. Use the NFPA equations in Sec. 13.6 and Eq. 13-30. 3 in 1.5 kip 12...
-
This problem continues the Draper Consulting, Inc., situation from Problem 9-40 of Chapter 9. Refer to Problem 2-62 of Chapter 2. Draper Consulting, Inc., believes the company will need to borrow...
-
Shadee Corporation expects to sell 640 sun shades in May and 380 in June. Each shade sells for $134. Shadee's beginning and ending finished goods inventories for May are 70 and 40 shades,...
-
1. Find the optimal March shipment schedule and its total transportation cost for each of the following: a. Cotton b. Polyester c. Silk 2. The company will be opening a silk-making department in the...
-
Grizzly Bear Winery (GBW) is a small winery in Portland, OR. Kerry Smith is the CEO and President of the Board of Directors, which is made-up of local business owners and professionals. In 2018, GBW...
-
Consider Figure 11.10, which shows the locus of feasible contracts for the population of the nation of Pcoria. a. In which corner of this diagram (northeast, southeast, northwest, or southwest) is...
-
What is the difference between a real option and a financial option?
-
For 2019, Sherri has a short-term loss of $2,500 and a long-term loss of $4,750. a. How much loss can Sherri deduct in 2019? b. How much loss will Sherri carry over to 2020, and what is the character...
-
Why is it sometimes optimal to invest in stages?
-
Whitney received $75,000 of taxable income in 2019. All of the income was salary from her employer. What is her income tax liability in each of the following alternative situations? a. She files...
-
Share the primary, secondary, and tertiary packaging of a specific product that is either exported or imported. What sorts of risks does this product encounter with being shipped, and how do these...
-
Cobb Manufacturing Company uses a process cost system and average costing. The following production data is for the month of June 2011. Production Costs Work in process, beginning of the month:...
-
Regarding food safety, a. Explain whether there is a greater risk for E. coli O157:H7 infection when consuming a hamburger compared to consuming asteak. b. Discuss whether or not food poisoning can...
-
Explain why it is advisable for an Rh woman who has had an abortion, miscarriage, or an ectopic pregnancy to be immunized against the Rh factor.
-
Define the term ubiquitous and explain whether this term can be used appropriately to describe bacteria and archaea.
-
What is an azeotropic solution? Explain the maximum boiling azeotrope with the help of a \(T-x-y\) diagram.
-
(a) Prove that the entropy of an isolated system either increases or remains constant, but can never decrease. (b) The following figure shows the relationship between temperature and entropy for a...
-
(a) With the help of a schematic diagram, describe the Linde liquefaction process. (b) With the help of a \(T-S\) diagram, describe the vapour compression refrigeration cycle. Derive the expression...
Study smarter with the SolutionInn App