A tannery with a wastewater flow of 0.011 m’/s and a BOD5 of 590 mg/L discharges into the Cattaraugus Creek (Nemerow, 1974). The creek has a 10-year, 7-day low flow of 1.7 m³/s. Upstream of the tannery, the BOD, of the creek is 0.6 mg/L. The BOD rate constants k are 0.115 d-' for the tannery and 3.7 d' for the creek. The temperature of both the creek and the tannery wastewater is 20°C. Calculate the initial ultimate BOD after mixing. Answers: LoTannery = 1,349.2 mg/L, L.Creek = 0.6 mg/L, L, = 9.27 or 9 mg/L

A tannery with a wastewater flow of 0.011 m’/s and a BOD5 of 590 mg/L discharges into the Cattaraugus Creek (Nemerow, 1974). The creek has a 10-year, 7-day low flow of 1.7 m³/s. Upstream of the tannery, the BOD, of the creek is 0.6 mg/L. The BOD rate constants k are 0.115 d-' for the tannery and 3.7 d' for the creek. The temperature of both the creek and the tannery wastewater is 20°C. Calculate the initial ultimate BOD after mixing. Answers: LoTannery = 1,349.2 mg/L, L.Creek = 0.6 mg/L, L, = 9.27 or 9 mg/L

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Design the in-line storage volume required to equalize the flowrate by using the following data.…

A: Time (hour) Flow (m3 /s) Volume (m3 ) 0000 0.0591 425.52 0200 0.0336 241.92 0400 0.0297…

Q: The 10-minute triangular unit hydrograph for a watershed has a peak discharge of 100 ft’/s at 40…

A: 10-minute triangular unit hydrograph peak discharge(Q)=100 ft3/s (occur at 40 minutes) Total…

Q: The long-term average annual precipitation (P) over a reservoir (surface area = 186 mi²) is 40…

A: (1) The long term average annual precipitation( P) over a reservoir is(2) Surface area…

Q: m If a dairy processing factory produces an average of 235 of wastewater with a BOD of 1200m2t.…

A: A dairy processing factory produces discharge Q= 235 m3/d of wastewaterper capita daily sewage flow…

Q: A 2000 mi² drainage basin receives 20 in/year rainfall. The evapotranspiration (ET) loss for the…

A: Given : Area of drainage basin = 2000 m2 Yearly rainfall = 20 in/year Evapotranspiration Loss = 1.5…

Q: Raw water from Lake Limpid is treated via direct filtration and disinfection to supply 0.26 m³/s (5…

A: In order to render raw water or wastewater safe for human consumption or to safeguard the…

Q: It takes 30 hours for water to flow from Point A to point B in a river. The flow rate and BOD5 in…

Q: A city of 5000 persons is to be served by a low rate trickling filter with a synthetic packing (K =…

A: Wastewater treatability and packing coefficient, K= 2.2 constant characteristic of packing used,…

Q: The stream shown below has a flow of 28,000 m³/d, and a cross-sectional area of 35 m². The stream is…

A: k1=0.18/day for BOD assimilation in the riverk3=0.01/day for BOD sedimentation in the…

Q: As a process engineer, you are designing sedimentation tanks for a new drinking water treatment…

Q: Three streams are mixing at a junction. The flow rate and total dissolved solids (TDS, a…

Q: Average runoff from a 600 km2 catchment area was measured as 60 m3/s for a 3-hr period .lf the…

Q: As a process engineer, you are designing sedimentation tanks for a new drinking water treatment…

A: Horizontal movement velocity of water is given by ; Vwater =2.0 mm /s Convert it into m /sec 1 m =…

Q: Determine the peak flow of return period 5 years at the outlet D. The IDF equation for the area is:…

Q: The Lo value just downstream from a sewage outfall is 60 mg/L. The DO saturation level at that point…

A: a) Calculation of critical distance:…

Q: QUESTION: A city of 5000 persons is to be served by a low rate trickling filter with a synthetic…

Q: roblem I: Figure 1 shows the flow hydrograph from a storm at the watershed outlet. Label the: (1)…

Q: A small industrial plant discharges wastewater into a stream. The plant discharge has a flow rate of…

A: It is the amount of oxygen required by micro organisms to decompose organic matter under aerobic…

Q: 2. A lake has a volume of 9 million m³ and an average depth of 3 m. There is an influent stream…

Q: The Waramurungudi tannery with a wastewater flow of 0.011 m^3/s and a BOD5 of 590 mf/L discharges…

Q: river and the slaughterhouse wastewater is 28°C. Calculate the initial ultimate BOD after mixing.…

Q: 3 m If a dairy processing factory produces an average of 235 of wastewater with a BOD of 1200m²t.…

A: A dairy processing factory produces discharge Q= 235 m3/d of wastewaterper capita daily sewage flow…

Q: The City of Smyrna discharges 0.16 m3/s of treated wastewater into Chattahoochee River. The BOD5 for…

A: Discharge of sewage Qs=0.16 m3/s Discharge of river, QR=0.16 m3/s BOD5 of sewage, =30 mg/L BOD5 of…

Q: A rain depth of 10 inches falls on a developed area of Charleston (CN = 90). Estimate the runoff.…

Q: A municipal wastewater treatment plant uses a circular clarifier. It receives 12 million gallons per…

Concept explainers

Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

7-23. A tannery with a wastewater flow of 0.011 m/s and a BOD5 of 590 mg/L
discharges into the Cattaraugus Creek (Nemerow, 1974). The creek has a
10-year, 7-day low flow of 1.7 m'/s. Upstream of the tannery, the BOD,
of the creek is 0.6 mg/L. The BOD rate constants k are 0.115 d-' for the
tannery and 3.7 d-' for the creek. The temperature of both the creek and
the tannery wastewater is 20°C. Calculate the initial ultimate BOD after
mixing.
Answers: LoTannery = 1,349.2 mg/L, LoCreek
9 mg/L
0.6 mg/L, L, = 9.27 or

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A waste water stream (flow = 2 m3/s), ultimate BOD = 90 mg/l is joining a small river (flow = 12 m³/s) ultimate BOD = 5 mg/I. Both water streams gets mixed up instantaneously. Cross-section area at the river is 50 m2. Assuming Deoxygenation constant = 0.251 day. Estimated downstream BOD of river flow.
✓ Problem 1: If the BOD of a municipal wastewater at the end of seven days is 60 mg/L and the ultimate BOD is 80.0 mg/L, what is the rate constant (base 10)? Convert the rate constant to base e. Also, calculate the 5-day BOD. athed alculate the ROD rate constant in
A conventional Wastewater Treatment Plant receives an average daily wastewater flow of 38,000 m2/d. Two circular primary clarifiers, operating in parallel, will treat the flow. Assume that a peripheral effluent weir is used for each clarifier. Consider a detention time of 2 hours and water depth of 4 meters for each clarifier. Determine: a. The diameter (m) of each primary clarifier. b. The weir loading rate (m3/d . m) for each clarifier at average daily flow. c. The expected (not calculated) BODs and Suspended Solids removal efficiencies (%) at an average daily flow rate.
The hydraulic conductivity of a homogeneous gravelly aquifer is 3 x 10-1 cm/sec. The hydraulic gradient (groundwater surface slope) of the phreatic (water table) aquifer is 0.01 and the aquifer's effective porosity is 0.25. Calculate the following two parameters and provide the answer to question b) in the space provided (numerical answer only, no units or any). Calculate the specific discharge that represents flow conditions of the aquifer in cm/sec. Also Calculate the approximate average velocity of a conservative solute dissolved in this aquifer, calculated to units of cm/sec (enter numerical answer without stating units).
There are currently 420 inhabitants in the small village of Pravino. The population is estimated to increase to 940 in thirty years. The current average peak flow is 1.2 L/s and is expected to increase to 2.14 L/s by 2050. The organic load is approximately 45 g BOD5/capita/day. The community is considering a free surface wetland or a lagoon to treat their wastewater. 1. Use the BOD loading to estimate the maximum surface area (in ha) required for a free surface wetland to serve the community by 2050 and remove BOD to 30 mg O2/L and TSS to 30 mg/L.
The town of Viracocha discharges 17,360 m³/day of treated wastewater into the Pachacamac Creek. The treated wastewater has a BOD5 of 12 mg/L and a BOD decay constant, k, of 0.12/day at 10 °C. Pachacamac Creek has a flow rate of 0.43 m³/s and an ultimate BOD, Lo, of 5 mg/L. The DO of the river is 6.5 mg/L and the DO of the wastewater is 1.0 mg/L. Compute the DO and the initial ultimate BOD, Lo, after mixing. Draw the Mass Balance Diagram.
An action will release DO and BOD to a large low velocity river at a location where the existing conditions of the river have already been determined. Assess the impacted conditions (as a result of this action) at a location 10,000 m down-river from where the action releases the pollution. River: Q = 2 m³/s, A=1m², T = 15 degC, L = 5 mg/L, DO = DOsat Source1: Q = 0.5 m³/s, T = 25 degC, L = 100 mg/L, DO = 1 mg/L
A 40-year annual series of eak river discharges with the mean equal to 15,000 cfs and standard deviation equal to 7,500 cfs approximates a normal distribution. (1) Determine the discharge woth a return period of 10 years. (2) Determine the discharge with a return period of 20 years. (3) what is the return period rhay corresponds to a discharge of period of 20 years. (3) What is the return period that corresponds to discharge of 20,000 cfs? (4) What is the probability that a discharge equal to or greater than 20,000 cfs will occur during a 5-year period?