Abstract
The objectives of this research work was to evaluate the reduction of THM precursors by cationic p-DADMAC and determine the correlations between the chlorine demand and trihalomethane formation in the presence of electrolyte solutions and ambient light. The chlorine demand was found to be significantly reduced provided that the H 2SO 4 electrolyte was fed to the sample solutions. The amount of CHCl 3 formation was also decreased when the Na 2SO 4 electrolyte was introduced in spite of the levels of light intensity. The p-DADMAC can not only effectively remove the turbidity but also reduce the formation of CHCl 3. The optimum dosage of p-DADMAC for reducing the turbidity TOC and CHCl 3 in the humic acid and source water samples was determined and depended upon the nature of organics.
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