Question

If biochemical oxygen demand (bod) of a town is 20000 kg/day and bod per capita per day is 0.05 kg, then population equivalent of town is

Answer 1

400000

Explanation:

BOD = Population × Per capita BOD/day

Population equivalent of a town = BOD of that town/BOD/capita/day = (20000 kg/day)÷(0.05 kg/capita/day) = 400000 capita.

Answer 2

Step by step explanation:

Given: BOD= 20000kg/day. per capita BOD= 0.05kg

To Find: population equivalent.

BOD

• BOD stands for Biological Oxygen Demand. It is the amount of oxygen needed by the microorganisms to break down the organic compounds.
• If the BOD is high then the water is not fit for drinking as the microorganisms are utilizing most of the oxygen present.
• Now we know that,

       $Population$ $equivalent$ $of$$a$ $town =$ /$\frac{BOD. of. that. town}{BOD. per.capita/day}$

       that is,

                                                          =   ($\frac{(20000 kg/day)}{0.05 kg/capita/day}$)

                                                          =    $400000 capita.$

Now, we got the population equivalent as 400000 capita

Hence, the population equivalent of the town is $400000 capita.$