Calculate the ultimate BOD of the mixed river and sewerage stream.

The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River?

What will be an ideal response?


Trades & Technology

You might also like to view...

Which of the following is not a factor that affects vessel design and construction?

A. Volume B. Altitude C. Temperature D. Geographic location

Trades & Technology

If ticks have attached themselves, they can be removed by grasping the tick as close to the ____________________ as possible

Fill in the blank(s) with correct word

Trades & Technology

When preparing a surface soil seedbed, the soil should generally be in the loosest, least dense soil condition in the row where the seed is placed

Indicate whether the statement is true or false

Trades & Technology

When taking alignment readings, couplings should be turned:

A. one at a time. B. drive end only. C. driven end only. D. together.

Trades & Technology