Eichhornia crassipes Efficacy in Secondary Wastewater Treatment in the Western Highlands of Cameroon

Figure 5

Average pH values (means ± S.D) in the vegetated and control lagoons systems during the dry season (a) and the rainy season (b) (I: inflow; AL: outflow of anaerobic lagoon; FL 1: outflow of facultative lagoon 1; FL 2: outflow of facultative lagoon 2; ML: outflow of maturation lagoon).

(a)

(b)