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01-09-2020 | Thematic issue | Issue 18/2020

Environmental Earth Sciences 18/2020

Treated water quality based on conventional method in Langat River Basin, Malaysia

Journal:
Environmental Earth Sciences > Issue 18/2020
Authors:
Minhaz Farid Ahmed, Mazlin Bin Mokhtar
Important notes
This article is a part of the Topical Collection in Environmental Earth Sciences on “Water in Large Basins” guest edited by Peiyue Li and Jianhua Wu.

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Abstract

The water of Langat River is not suitable for drinking without treatment because of chemical pollution from both the point and non-point pollution sources, although it is one of the primary sources of drinking water in Selangor state, Malaysia. There is no significant study in Malaysia that has investigated the efficiency of treatment plants to remove metals from treated water. Therefore, Chelex 100 resin-ion exchanged method was applied to investigate the raw water samples and treated water samples of eight treatment plants. Samples were analyzed by Inductive Coupled Plasma-Mass Spectrometry for the dissolved concentrations of aluminium, arsenic, cadmium, chromium, and lead, which have complied with the drinking water quality standard of Ministry of Health Malaysia and World Health Organization. However, the average metal removal efficiency is about 52.48 ± 8.89% from treated water by the treatment plants based on a single sampling and this could be considered a preliminary indication to upgrade the treatment technology in Malaysia, because the efficiency in removing trace metals by the plants may vary in hourly samplings.

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