Oxidation Pond
SOLUTION
Data:
Average intensity of solar radiation: 150 calories/cm 2 /d
Solar energy utilization efficiency for algae: 6 percent
Energy content of algal bio-mass: 6000 calories/g algae
Equation for algal photosynthesis:
Solution:
We know, ;
Therefore,
Also,
Also, , or,
Sludge Production ( ) = Q.X =
Volume of Oxidation Pond =
Assuming depth to be 0.5 m, Surface Area (A) =
Algae production =
Total algal production = (15).(10000) = 150 kg/d
Assuming 1.3 Kg oxygen production per Kg algal production,
Oxygen Production = (1.3).(150) = 195 Kg/d
Since oxygen available is more that oxygen requirement for microbial respiration, the design is adequate.