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Nutrients, Fe and bacterial removal in sub surface flow constructed wetlands treating polluted mine water

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dc.contributor.author Dharmasiri, KLGNC
dc.contributor.author Yalini, A
dc.contributor.author Jeewantha, DLC
dc.contributor.author Karunarathne, S
dc.contributor.editor Karunaratne, S
dc.date.accessioned 2022-06-22T08:27:52Z
dc.date.available 2022-06-22T08:27:52Z
dc.date.issued 2007-11
dc.identifier.citation Dharmasiri, K.L.G.N.C., Yalini, A., Jeewantha, D.L.C., & Karunarathne, S. (2007). Nutrients, Fe and bacterial removal in sub surface flow constructed wetlands treating polluted mine water. In S. Karunaratne (Ed.), Proceedings of the 2nd Annual Conference on Minerals for a Better Future – A Multidisciplinary Approach (pp. 17-20). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18346
dc.description.abstract A study was carried out to compare the performance of a pilot scale subsurface flow constructed wetland system to treat polluted water in Ragama prison quarry, an abandoned mine pit Two cement sand tanks with the dimensions of 7.5 m * 0.75 m x 0.75 m were constructed. Both the tanks used a mixture of aggregates as the substrate, where 40-60 mm was used in the treatment zone and both 20-30 mm and 40- 60 mm was mixed in the ratio of 1:1 in the inlet and outlet zones. Typha Latifolia (T.Latifolia) was planted in one tank, while the other was kept unplanted as the control. The initial plant biomass density was 1.7 kg/m2. Each horizontal subsurface flow bed is fed continously with polluted water at 173 litres per day and the retention time was maintained as 8 days. Concentration of nitrate, nitrite, ammonia, total and ortho phosphate, Fe and faecal coliform in the influent and effluent of the wetland system were monitored daily and their removal rates were determined. Nitrites, nitrates, phosphorus and Fe removal.in planted tank varied between 45%-80% whereas it was between 40%-70% in the unplanted tank. Removal efficiency of free ammonia in planted system was 6 % less than that of unplanted tank .However, bacterial removal in both planted and unplanted tanks were similar being 51%. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Abandoned mines en_US
dc.subject Environmental pollution en_US
dc.subject Removal efficiency en_US
dc.subject Typha Latifolia en_US
dc.title Nutrients, Fe and bacterial removal in sub surface flow constructed wetlands treating polluted mine water en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2007 en_US
dc.identifier.conference 2nd Annual Conference on Minerals for a Better Future - A Multidisciplinary Approach en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 17-20 en_US
dc.identifier.proceeding Proceedings of the 2nd Annual Conference on Minerals for a Better Future - A Multidisciplinary Approach en_US
dc.identifier.email shiromi@earth.mrt.ac.lk en_US


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