Methodology
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L0 : BOD5 pollutant load at pond inlet (Kg/d).
EL : BOD5 pollutant load eliminated (kg/d).
 Calculation of the total raceway ponds volume(VT)
We have :
VT =
𝑳 𝟎
𝑪 𝑽
With :
VT : Total ponds volume (m
3 ).
Cv: Volume load (kg BOD5/m
3 .d), Cv = 0.8 Kg BOD5/ m
3 / d.
L0: BOD5 pollutant load at ponds inlet (kg /d).
We have three raceway ponds, therefor the total volume wil be devided on three to
get the volume of one pond as follows:
Vp =
𝑽 𝑻
𝟑
 Calculating of the total raceway ponds surface area (ST)
We have :
ST =
𝐕 𝐓
𝐏
With :
ST : Total Surface area of raceway ponds (m
2 ).
VT : Total volume of raceway ponds (m
3 ).
P : Depth of raceway pond (taken as P= 0,5m).
Therefor, the surface area for a raceway pond is : SP=
𝑺𝑻
𝟑
 Calculation of the length and width of a raceway pond
We assume that: L = 5 W
With :
L : length of raceway pond (m).
W : width of raceway pond (m).