Performance Evaluation Of Constructed Wetland Under Tropical Climate: An Experience At Humid Tropic Centre And Universiti Sains Malaysia Engineering Campus

Lariyah Mohd Sidek, ASMALIZA MOHD NOR, SIMON BEECHAM, Z. A. Roseli, Aminuddin Ab Ghani

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Abstract

Constructed wetland is widely used in developed countries and temperate climate for the
stormwater quality improvement. However, constructed wetland in Malaysia can be considered
as a new innovation and not widely implemented in all over Malaysia. The aim of this paper is to
evaluate the efficiency of constructed wetland in Malaysia through the two experiences of
constructed wetland at Universiti Sains Malaysia Engineering Campus, Malaysia and Humid
Tropic Centre Kuala Lumpur, Malaysia. The data collected from these wetland systems used to
treat stormwater runoff or runoff-impacted surface waters were examined and compared in order
to identify any obvious trends that may aid future stormwater treatment wetland design efforts.
The parameters measured and discussed in this paper were Turbidity, Total Phosphorus,
Biological Oxygen Demand and Chemical Oxygen Demand. The result for USM Engineering
Campus constructed wetland showed that the average removal efficiency of pollutant removal
for BOD was range from 9.7% to 80%, COD was 5.7% to 62.9%, turbidity was 25.9% to 30.0%
and TSS was 50% to 100%. While for HTC constructed wetland, the result showed that the
average removal efficiency for BOD was range from 4.55% to 36.67% and COD was 9.1% to
88%, turbidity was 9.76% to 66% and TSS was 12.5% to 45%. Generally, the results obtained
show that the constructed wetland under tropical climate is capable to improve stormwater
quality before discharging to the nearest water ways. The efficacy of these constructed wetlands
to treat stormwater from different sources varied, and modified wetland designs or active
management may be necessary to improve water quality even further. The findings can be used
significantly to enhance the knowledge in constructed wetland under tropical climate where it
can serve effectively for managing urban runoff using control at source approach.
Original languageEnglish
Number of pages15
Publication statusAccepted/In press - 24 Nov 2012

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All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Computer Science(all)

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