Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia

Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia

A pilot tank study was carried out to determine the nutrient removal efficiency of the common reed Phragmites karka and tube sedge Lepironia articulata. The replicate planted tanks were continuously fed with a nutrient solution at a rate of 50.0 mg l-1 N and 5.0 mg l-1 P and control planted tanks we...

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Main Author: Sim, Cheng Hua
Format: Thesis
Language:English
English
Published: 2007
Subjects:
Phragmite - Wetland hydrology - Putrajaya (Wilayah Persekutuan) - Case studies
Online Access:http://psasir.upm.edu.my/id/eprint/4759/1/FPAS_2007_5.pdf
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spelling my-upm-ir.47592013-05-27T07:18:09Z Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia 2007 Sim, Cheng Hua A pilot tank study was carried out to determine the nutrient removal efficiency of the common reed Phragmites karka and tube sedge Lepironia articulata. The replicate planted tanks were continuously fed with a nutrient solution at a rate of 50.0 mg l-1 N and 5.0 mg l-1 P and control planted tanks were set up without nutrient supplements. The plant growth rate, plant nutrient removal efficiency and nutrient content in the substrate were analysed. In addition, a field study at the 3 wetland cells Upper North 4-6 in Putrajaya Wetlands was carried out to assess the plant nutrient removal efficiency and the nutrient removal rates along the 3 wetland cells. In the pilot study, the growth rate and total harvested biomass of treated wetland plants were significantly higher than of those in the control tanks. The treated samples of the common reed experienced a long growth period before they experienced senescence. However no flowering stage was observed throughout the 30-week experimental period. The treated tube sedge stands collapsed after 8 weeks in the first experimental period, probably due to nutrient overload conditions. In the second experimental period, the plant collapsed after 16 weeks under half nutrient concentration. Nutrient removal through nutrient accumulation by the common reed was higher than those in tube sedge at 42.12% N; 28.92% P and 17.43% N; 26.08% P respectively, and the differences were significant. The field study in Putrajaya Wetlands showed that water quality normally improved with flow length along the wetland cells. However the improvement is reduced during periods of rainfall where levels of Total Suspended Solids, Nitrate and Phosphate were highly variable. Nutrient removal performance was 82.11% Total Nitrogen (70.74% Nitrate-Nitrogen); and 84.32% Phosphate from UN 6 to UN 1 (2025 m) from April to December 2004. Both the pilot and field studies indicated that these two selected wetland plants grew well in the field and in the pilot tank study. Thus, both plant species are good examples of emergent plant species for constructed wetlands. Phragmite - Wetland hydrology - Putrajaya (Wilayah Persekutuan) - Case studies 2007 Thesis http://psasir.upm.edu.my/id/eprint/4759/ http://psasir.upm.edu.my/id/eprint/4759/1/FPAS_2007_5.pdf application/pdf en public phd doctoral Universiti Putra Malaysia Phragmite - Wetland hydrology - Putrajaya (Wilayah Persekutuan) - Case studies Faculty of Environmental Studies English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
topic Phragmite - Wetland hydrology - Putrajaya (Wilayah Persekutuan) - Case studies
spellingShingle Phragmite - Wetland hydrology - Putrajaya (Wilayah Persekutuan) - Case studies


Sim, Cheng Hua
Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
description A pilot tank study was carried out to determine the nutrient removal efficiency of the common reed Phragmites karka and tube sedge Lepironia articulata. The replicate planted tanks were continuously fed with a nutrient solution at a rate of 50.0 mg l-1 N and 5.0 mg l-1 P and control planted tanks were set up without nutrient supplements. The plant growth rate, plant nutrient removal efficiency and nutrient content in the substrate were analysed. In addition, a field study at the 3 wetland cells Upper North 4-6 in Putrajaya Wetlands was carried out to assess the plant nutrient removal efficiency and the nutrient removal rates along the 3 wetland cells. In the pilot study, the growth rate and total harvested biomass of treated wetland plants were significantly higher than of those in the control tanks. The treated samples of the common reed experienced a long growth period before they experienced senescence. However no flowering stage was observed throughout the 30-week experimental period. The treated tube sedge stands collapsed after 8 weeks in the first experimental period, probably due to nutrient overload conditions. In the second experimental period, the plant collapsed after 16 weeks under half nutrient concentration. Nutrient removal through nutrient accumulation by the common reed was higher than those in tube sedge at 42.12% N; 28.92% P and 17.43% N; 26.08% P respectively, and the differences were significant. The field study in Putrajaya Wetlands showed that water quality normally improved with flow length along the wetland cells. However the improvement is reduced during periods of rainfall where levels of Total Suspended Solids, Nitrate and Phosphate were highly variable. Nutrient removal performance was 82.11% Total Nitrogen (70.74% Nitrate-Nitrogen); and 84.32% Phosphate from UN 6 to UN 1 (2025 m) from April to December 2004. Both the pilot and field studies indicated that these two selected wetland plants grew well in the field and in the pilot tank study. Thus, both plant species are good examples of emergent plant species for constructed wetlands.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Sim, Cheng Hua
author_facet Sim, Cheng Hua
author_sort Sim, Cheng Hua
title Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
title_short Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
title_full Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
title_fullStr Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
title_full_unstemmed Nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in Putrajaya, Malaysia
title_sort nutrient removal using common reed (phragmites karka) and tube sedge (lepironia articulata) in a constructed surface flow wetland system in putrajaya, malaysia
granting_institution Universiti Putra Malaysia
granting_department Faculty of Environmental Studies
publishDate 2007
url http://psasir.upm.edu.my/id/eprint/4759/1/FPAS_2007_5.pdf
_version_ 1747810270461296640

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