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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Hydro-environment : Effect of nitrogen and phosphorus concentration in the water ofstormwater constructed wetland to fre...
Effect of nitrogen and phosphorus concentration in the water ofstormwater constructed wetland to freshwater phytoplankton distribution (10 years establishment): case study in universiti sains malaysia
The understanding the implication of biotic component, especially freshwater phytoplankton in the man-made
stormwater constructed wetland under tropical climate condition in Malaysia still rare and less documented. Thus,
the aim of the this study is to investigate the effect of nitrogen and phosphorus removal (as an important element
for freshwater phytoplankton) in the stormwater constructed wetland in Universiti Sains Malaysia (USM), which
designed based on Urban Stormwater Management Manual for Malaysia (MSMA) first edition, 2001, to the
freshwater phytoplankton communities, as a primary food chain in aquatic life. This paper also will elaborate the
detail design of stormwater constructed wetland during the first construction design was being made. Four (4)
main nutrients was measured; nitrite, nitrate, ammoniacal nitrogen and orthophosphate, together with other
supporting data such as water temperature, total suspended solid, biochemical oxygen demand (BOD), chemical
oxygen demand (COD), pH, DO and conductivity. The phytoplankton sampling was conducted at the same time
of water quality sampling. The results showed that the concentration of nutrient (especially nitrogen and
phosphorus) continuously reduce when enter to throughout the constructed wetland for nitrite (80%), nitrate
(61.56%), orthophosphate (60.98%) and NH4-N (51.49%) before it discharge to the outlet. Based on this nutrient
concentration reduction pattern, species diversity (H) measured for phytoplankton showed decreasing in number
as well as number of individual species and types of species. The dominance species represented by the
dominance group Chlorophyta are Coelastrum microporum, Mougeotia sp and Westella botryoides. The
freshwater phytoplankton distribution is strongly correlated with the reduction of nutrient concentration, however,
for the other biotic component such as freshwater fish, inverse relationship found with the freshwater
phytoplankton due to other factors such as the water depth design and water temperature in this constructed
File Size : 1,184,234 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 18/08/2015
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