47
FW1
FW2
P. sagittata C. papyrus P. sagittata C. papyrus
0.0165
0.0139
0.0112
0.0089
The productivity of a mixture of both plants at day 90 for FW1 was 4.14 kgdw
·
m
-2
·
month
-1
(Mid-
September-early January) and 2.33 kgdw
·
m
-2
·
month
-1
for FW2 (Early November-early January)
at day 60.
Conclusion
The use of FWs using a combination of
P. sagitatta
y
C. papyrus
is a novel and suitable system
to improve the water quality of a eutrophized urban lake.
Future work
Further work is in process in order to acquire more data regarding the nutrient and pollutants
removal processes in the FWs, and to test different designs.
References
APHA, 1998. Standard Methods for the Examination of Water and Wastewater. American Public
Health Association, New York, USA.
NOM-127-SSA-1994. Salud ambiental. Agua para uso y consumo humano. Límites permisibles
de calidad y tratamientos a que debe someterse el agua para su potabilización.
Olguín EJ, Sánchez-Galván G., Pérez-Pérez T., 2007. Assessment of the phytoremediation
potential of
Salvinia minima
baker compared to
Spirodela polyrrhiza
in high-strength organic
wastewater.
Water, Air & Soil Pollution
181(1–4): 35-47.
Olguín, E.J., Sánchez-Galván, G., González-Portela, R.E., López-Vela, M. E. 2008. Constructed
wetland mesocosms for the treatment of diluted sugarcane molasses stillage from ethanol
production using Pontederia sagitatta. Water Res. 42(14):3659-3666.
Tanner CC, Headley TR. 2011. Components of floating emergent macrophyte treatment wetlands
influencing removal of stormwater pollutants.
Ecological Engineering
37:474-486.
USEPA. 2000. Ambient water quality criteria recommendations. Rivers and Streams in nutrient
Ecoregion XII. United States Environmental Protection Agency. 80 pp.
WHO. 2008. Guidelines for drinking-water quality. 3rd ed. Geneva. World Health Organization.
668 pp.
Table 1. RGR calculated for the plants (d
-1
).
