Abstract
Presence of aquatic plants in natural or constructed wetlands not only reduces the concentration of problematic nutrients from the wastewater, but also alters the physico-chemical environment of the water, rhizosphere and underlying sediment (Reddy & Patrick, 1984). In addition to plant assimilation of nutrients, changes in the environment of the water also help in reducing the pollutant level of the wastewater through biochemical processes brought about by micro-organisms. This paper gives a review of the biochemical and physico-chemical processes occurring in a floating aquatic plant system. Keywords : Water hyacinth, pollutant removal, biochemical/ physico-chemical processes.
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