Question
In: Civil Engineering
a. To measure the BOD5 of a wastewater, three dilutions are prepared. The data for the...
a. To measure the BOD5 of a wastewater, three dilutions are prepared. The data for the tests are provided below. What is the BOD of the wastewater?
|
Wastewater (mL) |
DO t = 0 |
DO t = 5 days |
| 5 | 9.2 | 4.8 |
| 8 | 9.1 | 3.2 |
| 10 | 9.1 | 1.8 |
b. The BOD5 of a wastewater is estimated to be 75 mg/L at standard temperature. The k value is 0.150 day-1 at standard temperature. What is the ultimate BOD?
Solutions
Ally Wells answered 9 months agoRelated Solutions
Briefly describe the three stages of wastewater treatment.
Briefly describe the three stages of wastewater treatment.
9. The following data are given for an activated sludge process: BOD5 (influent) = 250 mg/L...
9. The following data are given for an activated sludge process:
BOD5 (influent) = 250 mg/L (soluble) BOD5 (effluent) = 20 mg/L
(soluble) MCRT = 10 days MLSS in the aeration tank = 2500 mg/L
Concentration of SS in the recycle line = 10,000 mg/L Concentration
of SS in the effluent = 30 mg/L (70% biodegradable) BOD5/BODu =
0.75, No nutrient limitations. Yield co-efficient, Y = 0.65
Endogenouse decay coefficient, kd = 0.06/day , Q=5MGD
Determine:
(a) Find soluble BOD5...
You are given the following 10-5 plaque counts from three different serial dilutions (a, b and...
You are given the following 10-5 plaque counts from
three different serial dilutions (a, b and c). For each, fill in
the table to show how many plaques you would estimate you would
find on the plates with the dilution factors listed
(10-6, 10-7, etc.) AND
identify the dilution (ranging from 10-5 to
10-9)where theoretically the results should become
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10-5 plaque
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10-6
10-7
10-8
10-9
55
5...
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What are the various challenges in designing a wastewater
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Wastewater from Taman Cenderawasih is treated through a bio tower. These are the data related to...
Wastewater from Taman Cenderawasih is treated through a bio
tower. These are the data related to the bio tower:
Flow rate
=
20 000 m3/day
Minimum temperature of the area
=
34◦C
Medium height
=
2 m
Influent BOD
=
300 mg/L
Effluent BOD
=
20 mg/L
Recirculation flow rate to the tower
=
35 000 m3/day
Wastewater treatability constant
=
0.09 min-1 at temperature 20◦C
Medium coefficient
=
0.5
Compute:
Ratio of recycled flow to the influent flow
Hydraulic...
Wastewater from Taman Cenderawasih is treated through a bio tower. These are the data related to...
Wastewater from Taman Cenderawasih is treated through a bio
tower. These are the data related to the bio tower:
Flow rate
=
20 000 m3/day
Minimum temperature of the area
=
34◦C
Medium height
=
2 m
Influent BOD
=
300 mg/L
Effluent BOD
=
20 mg/L
Recirculation flow rate to the tower
=
35 000 m3/day
Wastewater treatability constant
=
0.09 min-1 at temperature 20◦C
Medium coefficient
=
0.5
Compute:
Ratio of recycled flow to the influent flow
Hydraulic...
Conduct a descriptive data analysis that includes the following: a measure of central tendency a measure...
Conduct a descriptive data analysis that includes the
following:
a measure of central tendency
a measure of dispersion
at least one graph
Briefly interpret the descriptive data analysis.
Conduct the appropriate statistical test that will answer your
hypothesis. It must be a statistical test covered in this course
such as regression analysis, single t-test, independent t-test,
cross-tabulations, Chi-square, or One-Way ANOVA. Explain your
justification for using the test based on the type of data and the
level of measurement.
Report...
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Give three criticisms of nominal GDP as a measure of output.
The following are average operating data from a secondary activated sludge: Wastewater flow = 29160 m3/d...
The following are average operating data from a secondary
activated sludge:
Wastewater flow = 29160 m3/d
Vol. of aeration tanks = 8400 m3
Influent SS = 120 mg/L Influent BOD5 = 170 mg/L
Effluent SS = 22 mg/L Effluent BOD5 = 20 mg/L
Volatile fraction of mixed liquor and effluent suspended solids
is 0.65.
Mixed liquor suspended solids = 2500 mg/L
Waste sludge flow = 200 m3/d SS in Waste sludge = 9800
mg/L
Determine the following:
Aeration period, Food...
list the three major problems in using the CPI as a measure of the cost of...
list the three major problems in using the CPI as a
measure of the cost of living.
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