Constructed wetlands for the treatment of urban wastewater
1999
Al-Tumaiza, M.
Field experiences were conducted in Sicily through six months to assess the biodepurating ability of constructed wetlands. The research was conducted with six ponds where plants of vetivergrass and common reeds were planted. Additionally, one more unvegetated pond was left as control. Investigations included the research of variations in water EC, pH, temperature, COD, bacterial load and content in various elements (N, P, K, Na) in dependence of plants and daily inflow rates; also the influence of wastewater on depurating plants was investigated. Results in the first few months after plant establishment showed that EC and pH were unaffected, but COD was reduced to about 50 per cent and bacterial load was reduced to about 30 per cent. Plants were able to absorb significant amounts of potentially pollutants elements, particularly Na.
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Эту запись предоставил Mediterranean Agronomic Institute of Bari