Investigation of the effect of water hyacinth on the quality of water along Sungei Ulu Pandan
Audrey Lew, Gouri Binu
Group H     S2-08

School of Science and Technology, Singapore


Water Hyacinths are currently being experimented with to see whether they contain water purifying traits. This research is called Phytoremediation which is the removal of certain contaminants through the growth of specific plants in that area of land or water. The aim of our project was to see if there would be an improvement in the water quality if water hyacinths were planted in them. We set up an experiment with two control tanks and two tanks with the water hyacinths. We measured 3 parameters regarding the water quality, namely sediments, fecal bacteria and dissolved oxygen. However, we chose the wrong parameters to check for the water quality, and so our project turned sour. As for results, sediments content stayed relatively the same throughout the whole experiment. The dissolved oxygen content increased similarly for both control and water hyacinth set ups. The fecal coliform bacteria content had a slight increase in the tanks with the water hyacinths over time and a decrease in the tanks without them. Unfortunately, as there were no pollutants introduced to the water and that there was an insufficient number of parameters tested, we could not conclude that the water hyacinth is effective in removing the pollutants tested thus purifying the water. Understanding this information and type of research, we would have been able to use specific plants to purify water by doing an analysis of plants that can remove the parameters needed to make water drinkable and study how these plants specifically removed those parameters and replicate that technology to create better water purifiers for the world.

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