Klang River System Water Quality Modelling and Improvement for the River Of Life (ROL)

Abstract

The water quality of the Klang river system has declined due to pollution sources like sewerage cffluent, industrial effluent, untreated discharge from restaurants, wastes and cfflucnts from wet markets and commercial outlets, and large quantities of solid wastes (litter and rubbish) etc. One of the main objectives in the River of Life (RoL) project is to improve the water quality to Class IIB especially along the 10.7 km of rivers within the river beautification stretches of Gombak

river and Klang river.

In order to proposc any improvement to the river water quality, a comprehensive water quality modelling was carried out for the river system with the existing conditions through a process of thorough data collection of pollution sources, analysis of river flows during various seasons (return flows are significant during low flows), model calibration and verification, etc. With the calibrated model setup, various structural measures were tested and evaluated for their effectiveness before the optimum solution was adopted. The proposal also has recommended various non-structural measures to complement the structural measures.