Minimization of the formation of disinfection by-products |
| |
| Authors: | Badawy Mohamed I Gad-Allah Tarek A Ali Mohamed E M Yoon Yeoman |
| |
| Institution: | a Water Pollution Research Department, National Research Centre, P.O. Box 12311, Dokki, Cairo, Egypt
b Department of Civil/Environmental Engineering, University of South Carolina, Columbia, SC 29201, USA |
| |
| Abstract: | The drinking water industry is required to minimize DBPs levels while ensuring adequate disinfection. In this study, efficient and appropriate treatment scheme for the reduction of disinfection by-product (DBPs) formation in drinking water containing natural organic matter has been established. This was carried out by the investigation of different treatment schemes consisting of enhanced coagulation, sedimentation, disinfection by using chlorine dioxide/ozone, filtration by sand filter, or granular activated carbon (GAC). Bench scale treatment schemes were applied on actual samples from different selected sites to identify the best conditions for the treatment of water. Samples were collected from effluent of each step in the treatment train in order to analyze pH, UV absorbance at 254 nm (UVA254), specific UV absorbance at 254 nm (SUVA254), dissolved organic carbon (DOC), haloacetic acids (HAAs) and trihalomethanes (THMs). The obtained results indicated that using pre-ozonation/enhanced coagulation/activated carbon filtration treatment train appears to be the most effective method for reducing DBPs precursors in drinking water treatment. |
| |
| Keywords: | Drinking water Disinfection byproducts Ozonation GAC Sand filtration |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ |
|
