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 |