Effectiveness of Trihalomethane (THM) Precursors Removal in Groundwater Using Coagulant-Disinfectant


  • Nurul Hana Mokhtar Kamal


Trihalomethanes (THMs) is a disinfection byproduct (DBP) which forms when disinfectants react with natural organic matter (NOM) in treated drinking water. The coagulation process using ferric salts was able to remove NOM, a DBP precursor, effectively. This study method included the combination of coagulants (ferric-based) with disinfectant(s), to speed up the treatment process in emergency applications. Groundwater samples were treated using either ferric sulphate or ferric chloride, and chlorine in a series of jar tests. Ferric sulphate application showed a good turbidity removal (50.51%) while UV254 removal using ferric chloride was as high as 80.76%. Most conditions at pH 5.5 formed lower THMs compared to other pH levels, although the THM level at this pH still exceeded the limit set by authorities.


Download data is not yet available.




How to Cite

Mokhtar Kamal, N. H. (2019). Effectiveness of Trihalomethane (THM) Precursors Removal in Groundwater Using Coagulant-Disinfectant. International Journal of Integrated Engineering, 11(2). Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4246