Universiti Teknologi Malaysia Institutional Repository

Rainfall effects to the performance of subsurface flow constructed wetlands in leachate treatment

Lee, Yun Fook (2004) Rainfall effects to the performance of subsurface flow constructed wetlands in leachate treatment. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering.

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Constructed wetlands have gained wide acceptance as a wastewater treatment practice. Rainfall effect needs to be taken into account in designing local constructed wetlands particularly in tropical countries. This study was carried out to evaluate the effects of tropical climate (rainfall) towards the performance of horizontal subsurface flow constructed wetlands (HSFCW) planted with local plant, Typha angustifolia for landfill leachate treatment. The performance of the constructed wetlands was evaluated using seven parameters i.e nitrate, phosphorus, ammonical nitrogen, chromium, cadmium, biochemical oxygen demand (BOD5) and chemical oxygen demand (COD). Two pilot scale constructed wetlands reactors were used in the experiments. Performance of HSFCW in leachate treatment was evaluated with comparison to a blank reactor (without plants) serving as control. Experiments were run under artificial “monsoon rainfall intensity” in Malaysia. Results show that rainfall effects towards the performance of wetlands in leachate treatment vary from parameter to another (-1% to 41% enhancement) depending on the characteristic of each parameter. All parameters except chromium have better performance in leachate treatment after rainfall. Rainfall effects (increasing of removal efficiency) are more critical in control reactor as compared to the vegetated reactors.

Item Type:Thesis (Masters)
Additional Information:Thesis (Sarjana Kejuruteraan (Awam - Pengurusan Alam Sekitar)) - Universiti Teknologi Malaysia, 2004
Uncontrolled Keywords:rainfall, horizontal subsurface flow constructed wetlands (HSFCW)
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Divisions:Civil Engineering
ID Code:42506
Deposited By: Haliza Zainal
Deposited On:02 Nov 2014 02:37
Last Modified:05 Jul 2023 03:41

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