variation by area

d/dt

(Ammonia)

d/dt

(NO₃)

d/dt

(NO₂)

Raw sewage

41.28

2.4

0.06

Aeration tanks

45.52

1.59

0.089

Secondary sedimentation clarifiers

3.96

0.89

1.55

Oxidation ponds effluents

2.53

0.83

0.05