Effect of advanced water treatment processes on the formation of bromate

• Main Authors: Hsiu Er Cheng, 鄭秀娥
• Other Authors: Cheng Di Dong
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/87620740855031335567

碩士 === 國立高雄海洋科技大學 === 海洋環境工程研究所 === 96 === The objectives of this study were to investigate the process parameters such as temperature, pH, ozone dose, bromide, ammonia, total organic carbon, chlorine dose, and chlorine residual affecting the formation of bromate, a potential cancerous chemical, from an ozone-based advanced water treatment plant. More than 103 water samples were token weekly from three stations of the advanced treatment plant of Cheng-Chin Lake in 2006 and 2007. Bromate concentrations were analyzed by ion chromatography equipped with both ion conductivity detector and ultra-violet (UV) detector. Results showed the UV detector was more sensitive and low-noise background than the ion conductivity detector detector. More than four times sensitivity was observed from UV detectorrather than ion conductivity detector. The concentrations of bromate were strongly affected by the ozone doses added and the concentrations of bromide ion in the raw water. The total organic carbon, anmmonia, pH and temperature also played minor roles affecting the formation of bromate in the ozone-based advanced water treatment plant. Results of this study will be useful for the management and decision-making of drinking water treatment plant.