Author(s): Nazirul Mubin Zahari, Lariyah Mohd Sidek, Ming Fai Chow, Siti Humaira Haron, Nur Alia Niza, Hidayah Basri
Linked Author(s): Nazirul Mubin Zahari
Keywords: TMDL, pollutant load, BMP, Penchala River
Abstract: Penchala River is one of the longest rivers in Selangor, Malaysia and is under threat due to effluent disposals mainly from commercial and industrial sector near Petaling Jaya area. As per the DOE water quality index classification, the river is not acceptable as Class II River and has since surpassed as Class IV river at some parts of the river. Due to the outcome of effluent disposition in this river, modelling of one dimensional steady state water quality model is carried out by adapting QUAL2Kw. In order to minimize the watershed load, simulation of model involves simulating water quality data, temperature and hydraulics data to calculate the required reduction of pollutant loads to achieve or maintain the river at Class II. Several BMPs are then proposed for pollutant loads reduction. Analysis of the water quality model and manual calculation of TMDL indicated that NH4, TP, TN, COD, NO3, and TSS loads should be reduced by 80%, 70%, 70%, 60%, 89%, and 52% respectively
Year: 2017