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?

Expert Solution

Ally Wells answered 1 year ago

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...

Briefly describe the three stages of wastewater treatment.

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 untrustworthy (too few to count for a reliable titer calculation). 10-5 plaque count 10-6 10-7 10-8 10-9 55 5...

What are the various challenges in designing a wastewater treatment plant? Provide, at least three, and...

What are the various challenges in designing a wastewater treatment plant? Provide, at least three, and a way to address these challenges.

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...

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.

Question

a. To measure the BOD5 of a wastewater, three dilutions are prepared. The data for the...

Solutions

Expert Solution

Related Solutions

9. The following data are given for an activated sludge process: BOD5 (influent) = 250 mg/L...

Briefly describe the three stages of wastewater treatment.

You are given the following 10-5 plaque counts from three different serial dilutions (a, b and...

What are the various challenges in designing a wastewater treatment plant? Provide, at least three, and...

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...

Conduct a descriptive data analysis that includes the following: a measure of central tendency a measure...

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...

list the three major problems in using the CPI as a measure of the cost of...