Question

a. The BOD of the sewage incubated for one day at 25oC has been found to...

a. The BOD of the sewage incubated for one day at 25oC has been found to be 200 mg/L. What will be the 5 day, 20o C BOD and 4 day, 27o C BOD? Assume k=0.12(base e) at 25oCand θ = 1.056.

Homework Answers

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
A wastewater stream has a 5-day BOD at 20 °C equal to 170 mg/L and initial...
A wastewater stream has a 5-day BOD at 20 °C equal to 170 mg/L and initial BOD equal to 330 mg/L. Find the 15-day BOD at 15 °C. (Assume temperature coefficient θ = 1.053)
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...
BOD is naturally consumed in rivers. A stream (flowing at 3 MGD with no BOD) has...
BOD is naturally consumed in rivers. A stream (flowing at 3 MGD with no BOD) has a point source of pollution (untreated sewage outfall) flowing at 2 MGD that has 300 mg/l of BOD. How will this affect the stream quality? Answer the questions below. You will need to use both mass balance and kinetic equations. Also: stream velocity = distance / time (= 3 miles / hr). Show all work. Determine the flow rate of the stream downstream of...
A 2,250 m3/day extended aeration system is used to treat sewage from Taman Maju Jaya. The...
A 2,250 m3/day extended aeration system is used to treat sewage from Taman Maju Jaya. The average BOD influent of the sewage treatment plant is 250 mg/L and is reduced by 65% after the primary clarifier. It has two rectangular aeration tanks (working in parallel) with a dimension of 4 m width, 6 m length and 3.5 m water depth. The aeration tank maintains a biomass concentration of about 4000 mg/L. (i) Determine the food-to-microorganism ratio of the aeration tank...
A wastewater treatment plant designed for a community of 60,000 people has a flow of 100gal/person/day...
A wastewater treatment plant designed for a community of 60,000 people has a flow of 100gal/person/day and a biochemical oxygen demand (BOD) loading of 0.2 lb/person/day. The treatment plant has a permit limit for BOD equal to 15 mg/L. a. (10 pts) What is the concentration (in mg/L) of BOD coming into the plant (i.e., as raw, untreated sewage)? b. (2 pts) When the treatment plant is treating its waste and meeting its permit limit, what is the removal efficiency...
A 1.0 � 106 gallon reactor is used in a sewage-treatment plant. The influent biochemical oxygen...
A 1.0 � 106 gallon reactor is used in a sewage-treatment plant. The influent biochemical oxygen demand (BOD) concentration is 100 mg/L, the effluent BOD concentration is 25 mg/L, and the flow rate through the reactor is 500 gal/min. (a) What is the first-order rate constant for decay of BOD in the reactor? Assume that the reactor can be modeled as a comply mixed flow reactor (CMFR). Report your answer in units of per hour. (b) Assume that the reactor...
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...
You are tasked with conducting BOD studies for a waste treatment facility and its discharge to...
You are tasked with conducting BOD studies for a waste treatment facility and its discharge to a nearby river. You are told that the facility removes 93% of the BOD in total with a discharge rate of 1.0 m3 /s. you sample the receiving water and find that it has a 0.5 mg/L deficit from saturation concentration (saturation is at 9.7 mg/L) and a BOD5 content of 10 mg/L. The river flows at a speed of 0.25 m/s and has...
You are tasked with conducting BOD studies for a waste treatment facility and its discharge to...
You are tasked with conducting BOD studies for a waste treatment facility and its discharge to a nearby river. You are told that the facility removes 93% of the BOD in total with a discharge rate of 1.0 m3 /s. you sample the receiving water and find that it has a 0.5 mg/L deficit from saturation concentration (saturation is at 9.7 mg/L) and a BOD5 content of 10 mg/L. The river flows at a speed of 0.25 m/s and has...
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)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT