| Title |
Distribution of BOD Decay Rate in Streams and Reservoirs |
| Authors |
장창원 ( Chang Won Jang ) ; 김동환 ( Dong Hwan Kim ) ; 이재용 ( Jae Yong Lee ) ; 김연주 ( Yeon Ju Kim ) ; 정성민 ( Sung Min Jung ) ; 신창민 ( Chang Min Shin ) ; 김범철 ( Bom Chul Kim ) |
| Keywords |
BOD decay rate; BOD decomposition rate; Deoxygenation rate; Model coefficient |
| Abstract |
BOD decay rate is a key parameter of BOD-DO models in streams and lakes. In the calibration of water quality modeling appropriate range of coefficient is required for guidance of parameter selection. In this study BOD decay rate was measured at 48 stream sites and 10 reservoir sites in 8 different river systems. The decay rate ranged from 0.09 to 0.25 day-1 with a mean of 0.16 day-1. Among river systems the decay rates showed significantly different ranges, with the Han River system showing higher values than other river systems. In comparing different types of water bodies, the decay rate was slightly higher in tributaries than in reservoirs and mainstreams. Our results can provide guidance to the selection of proper coefficient for various water bodies in the calibration of water quality models. |