Occurrence and Removal of Pharmaceuticals, Pesticides and Fluoro-surfactants from Drinking Water Resources |
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학술지명 5th EuCheMS Chemistry Congress
저자 이은호,맹승규,최재원
발표일 2014-09-02
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Environmental contaminants of emerging concern, including pharmaceuticals and pesticides and endocrine disrupting compounds, represent a major concern in drinking water treatment and indirect wastewater portable reuse. The use of chemicals in each country depends on many factors such as type of industries, agricultural practices and living conditions, which also varies within a country depending on geographical location. Surface water is the major source of drinking water and has often been impacted by wastewater discharges or agriculture runoffs, raising the issue of possible occurrence of organic micropollutants in drinking waters. In this study, the occurrence and removal of seven pharmaceuticals (carbamazepine, ibuprofen, caffeine, iopromide, sulfamethazin, sulfathiazole, and, sulfamethoxazole), ten pesticides (carbendazim, isoprothiolane, hexaconazole, phosphamidon, simazine, kitazine, tebuconazole, metolachlor, butachlor, and atrazine), and two fluoro-surfactants (perfluorooctanesulfonic acid and perfluorooctane sulfonate) in ten drinking water treatment plants were investigated for more than a year of monitoring campaigns conducted every month. The removal efficiency of the selected micropollutants in conventional and advanced drinking water treatments were measured and compared. The occurrence of pesticides in the raw drinking waters was more influenced by season, and pesticides are often detected at a certain time of the year, usually in the spring. The occurrence pattern of the selected pesticides and pharmaceuticals in the source waters were different across the investigated drinking water treatment plants. The removal efficiencies of the investigated pharmaceuticals and pesticides varied significantly depending on their physicochemical properties such as log Kow. Most pesticides were efficiently removed by drinking water treatments, but metolachlor was poorly removed. Among the pharmaceuticals, carbamazepine was not effectively removed. |