A short distance downstream from the Waramurungundi tannery in Problem 9–19, a glue factory and a municipal wastewater treatment plant also discharge into Djanggawul Creek. The wastewater flows and ultimate BOD5 for these discharges are listed in the following table. Determine the initial ultimate BOD after mixing of the creek and the three wastewater discharges.
Source | Flow (m3 · s−1) | Ultimate BOD (mg · L−1) |
Glue factory | 0.13 | 255 |
Municipal WWTP | 0.02 | 75 |
The Waramurungundi tannery with a wastewater flow of 0.011 m3 · s−1 and a BOD5 of 590 mg · L−1 discharges into the Djanggawul Creek. The creek has a 10-year, 7-day low flow of 1.7 m3 · s−1. Upstream of the Waramurungundi tannery, the BOD5 of the creek is 0.6 mg · L−1. The BOD rate constants (k) are 0.115 day−1 for the Waramurungundi tannery and 3.7 day−1 for the creek. Calculate the initial ultimate BOD after mixing.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.