Land treatment is used to dispose off sewage in a town having 200
| Land treatment is used to dispose off sewage in a town having 200 hectare of sewage farm. The town produces 6 MLD of waste water. The consuming capacity of soil if an extra 30% is being provided for rest is –
A. 25000 L/ha/day
B. 39000 L/ha/day
C. 33000 L/ha/day
D. 42000 L/ha/day
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
Q = 6MLD
Area = 200 hectare
Let ‘x’ hectare area of land being used.
Required area for rest \(= \frac{{30}}{{100}} \times x = 0.3\;x\)
Now, 0.3x + x = 200
⇒ 1.3 x = 200
\(\Rightarrow x = \frac{{200}}{{1.3}}\)
⇒ x = 153.85 hectare
Consuming capacity \(= \frac{{6 \times {{10}^6}\;l/day}}{{153.85\;ha}}\)
= 38999.02 l/ha/day