Question

If the oxygen demand remaining in a water sample was 97mg/L after 3 days. The standard...

If the oxygen demand remaining in a water sample was 97mg/L after 3 days. The standard reaction rate constant (k) has been found to be 0.18 d-1. 1) Predict the BOD after 8 days. 2) If the temperature of the sample was 27°C, calculate the remaining oxygen demand after 9 days.

Homework Answers

Answer #1

Please???? rate

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
If the oxygen demand remaining in a water sample was 50mg/L after 4 days. The standard...
If the oxygen demand remaining in a water sample was 50mg/L after 4 days. The standard reaction rate constant (k) has been found to be 0.19 d-1. 1) Predict the BOD after 7 days. 2) If the temperature of the sample was 28°C, calculate the remaining oxygen demand after 7 days. please solve it correct .
A BOD3 test was run and the results were: Dilution = 30 Initial DO = 9.5...
A BOD3 test was run and the results were: Dilution = 30 Initial DO = 9.5 mg/L Final DO = 2.0 mg/L The reaction rate constant k has been found to be 0.25 day-1 . (a) What is the BOD3? (b) What would be the ultimate carbonaceous BOD? (c) What is the BOD5? (d) What would be the remaining oxygen demand after five days
A BOD test is run using 80 mL of treated wastewater mixed with 160 mL of...
A BOD test is run using 80 mL of treated wastewater mixed with 160 mL of pure water. The initial DO of the mix is 8.0 mg/L. After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so the only BOD being measured is carbonaceous. a. What is the five-day BOD of waste wastewater? b. Assuming no nitrification...
A paper mill generates 0.087 m3/s of wastewater which has an ultimate BOD of 720 mg/L....
A paper mill generates 0.087 m3/s of wastewater which has an ultimate BOD of 720 mg/L. The reaction rate constant at 20 °C was determined to be 6.48 hr-1. (a) Determine the BOD exerted in the water after 5 days at 20 °C (units: mg/L) a) 1066 b) 533 c) 333 d)720 (b) Determine the BOD exerted in the water after 5 days at 10 °C (units: mg/L)                             a)533 b) 227 c)...
A pond’s water contains 25.0 mg/l of algae. Find the theoretical carbonaceous oxygen demand (CBOD) of...
A pond’s water contains 25.0 mg/l of algae. Find the theoretical carbonaceous oxygen demand (CBOD) of water in the pond Find the total theoretical (carbonaceous plus nitrogenous ) oxygen demand (BOD) on water in the pond Note: algae can be represented by the chemical formula C6H15O6N. Theoretically oxygen in pond can be consumed following equations 1 and 2. C6H15O6N + 6O2 → 6CO2 + 6H2O + NH3                     (1) NH3 + 2O2 → NO3- + H+ + H2O                                               (2)
A wastewater treatment plant with a zero dissolved oxygen, discharges 10,000 m3/d to a small stream....
A wastewater treatment plant with a zero dissolved oxygen, discharges 10,000 m3/d to a small stream. The stream average flow is 0.4 m3/s with a dissolved oxygen level of 8 mg/l and a BOD5 of 2 mg/l. The minimum oxygen demand that must be maintained in the stream is 4 mg/l. Determine the maximum BOD5 that can be discharged if the initial ultimate BOD after the mixing is 8.1 mg/l. The BOD reaction rate is 0.23 d-1.
The East Hartford WWTP discharges 150 MGD of treated wastewater into the CT river. The treated...
The East Hartford WWTP discharges 150 MGD of treated wastewater into the CT river. The treated was tested in the lab and found to have aBOD5 of 17.5 mg/L and an ultimate BOD (Lo) of 92 mg/L at 20oC. Find the reaction rate K, for the treated wastewater. The CT river has a flow of 250 m2/s and an ultimate BOD (Lo) of 6 mg/L. the DO of the river is 4.5 mg/L and the DO of the wastewater is0.2...
Introduction to environmental (4-1, DC 332) Glutamic acid (C5H9O4N) is used as one of the reagents...
Introduction to environmental (4-1, DC 332) Glutamic acid (C5H9O4N) is used as one of the reagents for a standard to check the BOD test. Determine the theoretical oxygen demand of 150 mg/L of glutamic acid. Assume the following reactions apply: C5H9O4N + 4.5O2 →5CO2 + 3H2O + NH3 NH3 + 2O2 → NO3- + H+ + H2O (4-3, DC 332) If the BOD5 of a waste is 220 mg/L and the ultimate BOD is 320 mg/L, what is the rate...
Problem #3: Biochemical Oxygen Demand (BOD) and Stream Quality A wastewater treatment plant designed for a...
Problem #3: Biochemical Oxygen Demand (BOD) and Stream Quality A wastewater treatment plant designed for a community of 45,000 people has a flow of 100 gal/person/day and a BOD5 loading of 0.2 lb/person/day. The upstream characteristics of the receiving waters are: stream flow rate = 20 cfs and BOD5 = 2 mg/L The water quality standards require the in-stream BOD5 to be less than 7 mg/L in this stretch of the river. The minimum BOD removal efficiency that the treatment...
a. 200 mL of water sample was collected from a river. 5 mL of the river...
a. 200 mL of water sample was collected from a river. 5 mL of the river water diluted to 1 L. A BOD bottle which is 300 mL is filled with this water and aerated. The dissolved oxygen content was 7.8 mg/L initially. After 5 days, the dissolved oxygen content had dropped to 4.8 mg/L. What is BOD5 of this sample? b. Hydraulic conductivity of soil is measured as 2 x 10-2 cm/sec. After an accident, a truck carrying dissolved...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT