International Journal of Chemical Studies
Vol. 2, Issue 4 (2014)
Estimation of short-term chlorine demand and its correlation with available iron in drinking water
Author(s): Md. Rafiqul Islam & Md. Mamun Hossain
Abstract: This study describes the effect of iron on chlorine demand and the efficiency of chlorination in drinking water. To find out the association between short term chlorine demand and available iron, 15 raw water samples were analysed for iron as well as other physicochemical parameters and then dosed with 7.8 mg/l & 3.9 mg/l of chlorine respectively. In chlorinated water samples, chlorine demands were estimated at 30 minutes and 24 hours of contact time respectively. It reveals that chlorination of water containing higher iron concentration lowers the amount of residual chlorine causing elevated chlorine demand and this may happen more rapid within 30 minutes of addition of chlorine to water than that of 24 hours. Data point of all analysed sample suggests that the concentration of available iron in drinking water is positively correlated (r >0.6; p<0.05) with chlorine demand.
Pages: 55-59 | 1246 Views 20 Downloads
How to cite this article:
Md. Rafiqul Islam & Md. Mamun Hossain. Estimation of short-term chlorine demand and its correlation with available iron in drinking water. Int J Chem Stud 2014;2(4):55-59.