Oxygen levels downstream of a sewage point discharge reach some minimum 'sag' point according to the...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Oxygen levels downstream of a sewage point discharge reach some minimum 'sag' point according to the Streeter-Phelps model as shown in Figure 2. (mg/L) LITHEHEN 10 r (d) 15 20 Figure 2: A dissolved oxygen 'sag below a point of sewage discharge into a river. Streeter-Phelps Model: 0 = 0 North (1) kal e kg-k-ka where o- dissolved oxygen (mg/L), o, - oxygen saturation concentration (mg/L), 7-travel time (d). = biochemical oxygen demand (BOD) concentration at the mixing point (mg/L), k, = rate of decomposition of BOD (d), k-rate of settling of BOD (d), k, -aeration rate (d), and S, - sediment oxygen demand (mg/(L-d)). a) Using prebuilt python functions, write a script that determines what the critical oxygen level will be (minimum oxygen concentration) and when it will occur (i.e. how many days downstream) given the following values: 0 = 10mg ka = 0.1d-, ka = 0.6d, k, = 0.05d, Lo some, L Sp = 1mg/(Ld) b) Plot oxygen concentration over time. c) This point is where lifeforms will be the most stressed; will this level of oxygen support most aquatic life? Oxygen levels downstream of a sewage point discharge reach some minimum 'sag' point according to the Streeter-Phelps model as shown in Figure 2. (mg/L) LITHEHEN 10 r (d) 15 20 Figure 2: A dissolved oxygen 'sag below a point of sewage discharge into a river. Streeter-Phelps Model: 0 = 0 North (1) kal e kg-k-ka where o- dissolved oxygen (mg/L), o, - oxygen saturation concentration (mg/L), 7-travel time (d). = biochemical oxygen demand (BOD) concentration at the mixing point (mg/L), k, = rate of decomposition of BOD (d), k-rate of settling of BOD (d), k, -aeration rate (d), and S, - sediment oxygen demand (mg/(L-d)). a) Using prebuilt python functions, write a script that determines what the critical oxygen level will be (minimum oxygen concentration) and when it will occur (i.e. how many days downstream) given the following values: 0 = 10mg ka = 0.1d-, ka = 0.6d, k, = 0.05d, Lo some, L Sp = 1mg/(Ld) b) Plot oxygen concentration over time. c) This point is where lifeforms will be the most stressed; will this level of oxygen support most aquatic life?
Expert Answer:
Answer rating: 100% (QA)
Solutions Step 1 Answer To determine the critical oxygen level downstream using the StreeterPhelps model well use the provided formula and given value... View the full answer
Related Book For
Numerical Methods For Engineers
ISBN: 9780071244299
5th Edition
Authors: Steven C. Chapra, Raymond P. Canale
Posted Date:
Students also viewed these programming questions
-
Master budget The Columbo Company manufactures a single model trench coat. Projected sales in units for the first 5 months of fiscal 2024 are as follows. January 18,000 February 20,000 March 15,000...
-
A siphon spillway, as shown in Figure P4.2.3, is 200 feet long with a diameter of 2 feet. It is used to discharge water (68°F) to a downstream reservoir 50 ft below the upstream reservoir. The...
-
Project the 2 4-1 IV design in Example 8-1 into two replicates of a 2 2 design in the factors A and B. Analyze the data and thaw conclusions. Example 8-1: Consider the filtration rate experiment in...
-
Two kilograms of water, initially saturated liquid at 10 kPa, are heated to saturated vapor while the pressure is maintained constant. Determine the work and the heat transfer for the process, each...
-
What is the difference between strengths and weaknesses, on the one hand, and opportunities and threats, on the other?
-
Most people rely on implicit costs in their everyday lives. Can you give some examples? What alternatives did you have to achieve the desire outcome?
-
Which of the following management theorists conducted the famous experiment at the Hawthorne Electric Plant in which employee productivity increased regardless of the type of intervention implemented...
-
Kuznicki made a contract for the installation of a fire detection system by Security Safety Corp. for $498. The contract was made one night and canceled at 9:00 the next morning. Security then...
-
Outdoor Equipment (OE) sells camping equipment. On December 1, the accounts receivable account had a balance of $50,000, the bad debt expense account had a balance of $0, and the allowance for...
-
Ramona and Hermione formed Wiley Corporation on January 2. Ramona contributed cash of $295,000 in return for 50 percent of the corporation's stock. Hermione contributed a building and land with the...
-
Track the sales and reviews for Automobile related products on Amazon and other e-commerce sites along with gathering information by analyzing the trends and patterns base do the posts on social...
-
1. a. What is the goal of the firm and, therefore, of all managers and employees? Discuss how one measures achievement of this goal. b. How do market forces-both shareholder activism and the threat...
-
If you want to have $12,000.00 in 3 years and 6 months, how much should you deposit today in an investment fund that is earning interest at a rate of 4.58% compounded quarterly? Round to the nearest...
-
Jasmine Company manufactures both pesticide and liquid fertilizer, with each product manufactured in separate departments. Three support departments support the production departments: Power, General...
-
Company SLG is an exporter of retail fashion products from the U.S. to Italy, and has an account receivable of100,000 due 180-days from now. The spot rate is $1.34/ and the 180-day forward rate is...
-
The bank that you work for was just contacted by a customer. The customer wants to short a 6-month British Pound forward contract and wants a quote of the forward price. To come up with the price,...
-
Define a lease. Identify five key provisions that are likely to be included in a lease agreement. 2)From the point of view of the lessee, outline the advantages and disadvantages of leasing....
-
What tools are available to help shoppers compare prices, features, and values and check other shoppers opinions?
-
Given dxl/dt = 1999x1 + 2999x2 dx2/dt = 2000xl 3000x2 If x1(0) x2(0) = 1, obtain a solution from t = 0 to 0.2 using a step size of 0.05 with the (a) Explicit and (b) Implicit Euler methods.
-
Use Mullers Bairstows method to determine the roots of (a) (x) = - 2 + 6.2x 4x2 + 0.7x3 (b) (x) = 9.34 - 21.97x + 16.3x2 - 3.704x3 (c) (x) = x4 - 3x3 + 5x2 x - 10
-
The general from for a three-dimensional stress field is given by Where the diagonal terms represent tensile or compressive stresses and the off-diagonal terms represent shear stresses. A stress...
-
Burger King announced it would phase abused chicken out of its supply chain by 2024. The new standards include the requiring of higher-welfare strains of chickens, a reduction in the stocking density...
-
Ilectronics Inc. makes high-quality speakers for a variety of applications. Electronics Inc. is a St. Louis-based company but has significant manufacturing operations in China. When manufacturing...
-
Sony ('orp). launched its PlayStation 4 in late 2013. It was introduced at a price point of \(\$ 399\). At the time of introduction, a technology firm performed a tear-down of the PlayStation and...
Study smarter with the SolutionInn App