A 4 MGD WWTP discharges a secondary treated effluent into a receiving stream. The wastewater has the following characteristics:
BOD5= 20 mg/L
DO = 2.0 mg/L
Water Temperature = 24C
The receiving upstream from the point of discharge has the following characteristics:
Flowrate = 18 cfs
BOD5= 4 mg/L
DO= 6 mg/L
Water Temperature = 27C
Cross-sectional Area = 36 sqft
a. 3.2
b. 5.2
c. 7.2
d. 8.4
The reaeration rate is estimated to be 0.4 1/day. (Base e at 20C), and the temperature correction coefficient is 1.024. the deoxygenation rate
constant is estimated to be 0.23 1/day. (Base e at 20C) and the temperature correction coefficient is 1.047. reaeration and deoxygenation are
the only major factors affecting the dissolved oxygen concentration in the stream after mixing with wastewater effluent. Assume the time of
travel in the stream to reach the maximum dissolved oxygen deficit is 3 days. The dissolved oxygen deficit (mg/L) at this location downstream
from the point of discharge is most nearly:
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more