Abstract

This paper briefly compares the removal efficiency of four species of macrophytes: Phragmites australis, Typha angustifolia, Iris pseudacorus and Scirpus lacustris, by using three different flow rates of sewage (100, 150 and 2001/day) in an experimental pilot plant in NW Spain. The largest removal of organic matter and total nitrogen belongs to Typha angustifolia, whereas Iris pseudacorus shows the highest removal of total phosphorus. The microbiological parameters exhibit the highest removing values.

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