Due to their ability to uptake and accumulate trace elements, as well as to regenerate after cutting, some species of willow and reed have been used for many years in environmental protection to purify sewage and neutralize sludge. The paper presents the results of the investigation on selected chemical properties of the osier willow shrubs (Salix viminalis L.) and common reed (Phragmites australis Cav. Trin. Ex Steud.) cut every year. The research was conducted on ground-plant beds in two small sewage treatment plants in the Lubelskie voivodeship in 2002-2004. Both plants use a similar wastewater treatment technology. Their bed areas, the ways in sewage is supplied, hydraulic loading, and pollutant load are different, though. According to the results, willow stems show a greater ability to accumulate nitrogen and phosphorus than reed stems. However, the potassium content in both willow and reed is at a similar level. Plants do not uptake nutrients from sewage for a whole year but only in a vegetation season. Yearly removal of plants from the ground-plant beds advisable due to high concentration of assimilated nutrients in leaves and stems. In flora remains on the bed, nutrient release to an environment occurs and the concentration of liberated ...
In the ecological system of the Mściwojów Reservoir the occurrence of heavy metals was ascertained. The concentration of chosen elements: in bottom sediments of the reservoir (Cu, Zn, Pb, Cd, Ni, Mn, Fe) and in the reed (Phragmites australis) from settlement ponds and the pre-dam reservoir (Cu, Zn, Pb, Cd) has been determined. Origin of these metals can be both geogenic and anthropogenic. In the paper the possibility of the element genesis has been presented. Accordingly, there has been analyzed the geological formation of the reservoir catchment and collected the information on agricultural and communal pollutions.. Anthropogenic hazard for the water environment on this area originates mostly from the agricultural space, as a consequence of applying the intensive agriculture, the mineral manures and the plant protection measures and the irrational leadership water-of sewer management. ...
