Keynote Speaker

Dr. Noraliani Alias 


Title : Understanding First Flush in Urban Runoff

Urbanisation process can have a positive impact in terms of socio economic development. However, urbanisation negatively impacts on the water environment in both quantitative and water qualitative terms. In terms of water qualititative, increase in anthropogenic activities within an urbanised area leads to the generation of high amounts of pollutant build up on the impervious surface and will be washed off during the storm event. The first flush phenomenon during wash off process is an important parameter in designing effective stormwater treatment. Therefore, in depth understanding of first flush behavior which are responsible for the accumulation and transport of various pollutants in the urban environment is important. The first flush behavior was investigated in urban residential area in Gold Coast, Australia and also a small catchment in higher learning institution in Johor, Malaysia. Several water quality parameters were tested such as Total Suspended Solids, Total Dissolved Solids, Total Nitrogen, Total Phosphorus and Zinc. The influence of catchment and rainfall characteristics on first flush behavior was investigated. Therefore, PROMETHEE and GAIA was adopted in order to achieve the objective. The results show that rainfall pattern and location of the pollutants source play an important role on first flush behavior.


Dr. Noraliani Alias is a senior lecturer at Department of Water and Environmental Engineering, School of Civil Engineering, Universiti Teknologi Malaysia. She has been lecturing in Universiti Teknologi Malaysia for the past 18 years. Dr. Noraliani Alias obtained her Bachelor of Civil Engineering in 1999 and M.Eng (Hydrology and Water Resources) in 2003 from Universiti Teknologi Malaysia (UTM). She completed her PhD from Queensland University of Technology, Brisbane, Australia in 2013 in the area of Urban Water Quality. Her field of research interest is in urban water quality, flood modelling and groundwater contamination. Dr. Noraliani Alias is actively involved in research and secured grants as the principle and associate researcher with the total funding of RM290,400.00 since 2015. The findings of the research were published in more than 30 papers with Scopus h-index of 5.Dr. Noraliani Alias was also invited as a visiting Scientist under JSPS Asian Core Program supported by JSPS (Japan Society for Promotion of Science) and MOHE (Ministry of Higher Education to Kyoto Unversity on November, 2015 and was invited as invited speaker to 2nd International Symposium on Expertise of Engineering Design (ISEED’17) organised by National Institute of Technology (NIT) Kagoshima College, Japan on May 2017.

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