Abstract
Wetlands have been introduced as natural based devices for treating the stormwater runoff. Temperature plays an important role in the nutrient removal process of wetland plants. Thus, the effect of temperature on nutrient removal efficiency of the water hyacinth plant was evaluated in this study. Water quality of both tanks that containing water hyacinth plants and control tank were monitored continuously for 2 weeks. The collected water samples were examined for total phosphorous (TP), turbidity, dissolved oxygen (DO), pH, conductivity (Cond.), total dissolve solid (TDS) and water temperature. The results showed that there are changes in the water quality concentration although there is no water hyacinth in the control tank. The release of phosphorus from the organic matter and particle in the control tank is suggested that occurred during the high temperature period. The optimum removal of nutrient occurred during the water temperature at 30℃. This clearly showed the effect of temperature on the flux of phosphorus in the water tank.
Highlights
Urban stormwater pollution has becoming an emerging problem in the recent decades due to the rapid urban development and population growth [1,2]
The growth of the floating wetland plant are affected by changes of temperature and at the same time affect the nutrient removal efficiency [11]
This study is carried out to determine the effect of temperature on the nutrient removal efficiency of water hyacinth plant
Summary
Urban stormwater pollution has becoming an emerging problem in the recent decades due to the rapid urban development and population growth [1,2]. Tens of thousands of natural and artificial wetlands have been constructed around the world and adapted according to varieties climatic zones These wetlands are used to absorb and treat a wide range of pollutants such as nutrients such as phosphorous and nitrogen, heavy metals, petroleum-based chemicals, biocides, and various human pathogens using natural processes [3]. The growth of the floating wetland plant are affected by changes of temperature and at the same time affect the nutrient removal efficiency [11]. The studies of water hyacinth as floating wetland treatment device only focusing on the nutrient removal rate. This study is carried out to determine the effect of temperature on the nutrient removal efficiency of water hyacinth plant
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