Nitrogen and Phosphorus removal from municipal wastewater by three wetland plant species
Journal Title: Journal of River Engineering - Year 2013, Vol 1, Issue 2
Abstract
Due to the sensitivity of municipal wastewater, further wastewater treatment is essential to ensure public health and crop production. One solution for the additional treatment of municipal wastewater is the use of surface and subsurface constructed wetlands. In order to evaluate the proportion of total nitrogen (TN) and total phosphorus (TP) removal attributed to storage in plants, three wetland plant species (Phragmitesaustralis, Typha and Rush) were planted in separate cells. For each plant, four cells were considered. After 24 weeks, the plants were sampled to determine the nutrient’s accumulation rate; also, the capacity of these species to retain the nutrients in above and below-ground plant tissues was reported. The uptakes of nutrients by Rush, Common Reed and Typha from the pilot system after 24 weeks, were 58.6% TKN; 35.71% P, 56.48% TKN; 30.35% P and 32.19% TKN; 14.28% P, respectively. The results can be applied in plant species selection in the design of constructed wetlands in Isfahan as well as in optimizing the performance of these systems.
Authors and Affiliations
Hajar Fazlollahi - seyed saeid Eslamian
Keywords
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