| Title |
Necessity of Refractory Organic Matters Management in Total Maximum Daily Loads (TMDLs) |
| Authors |
박재홍 ( Jae Hong Park ) ; 박배경 ( Bae Kyoung Park ) ; 이재관 ( Jae Kwan Lee ) ; 류덕희 ( Doug Hee Rhew ) |
| Keywords |
BOD; COD cr; COD Mn; Refractory organic matter; TOC |
| Abstract |
To control organic matters, it needs to manage not only biodegradable organic matters but also refractory organic matters. Refractory organic matters from municipal wastewater, industrial wastewater, non-point sources and etc., have been continuously discharged to the near watersheds. It is estimated that the refractory organic matter ratios are continuously increased in waterbody. In watersheds of the Total Maximum Daily Loads (TMDLs), it was investigated that COD/BOD ratios increased in many unit watersheds of the 4 major river basins. The portions COD/BOD ratios increased were found to be a 97% of Geum River unit watersheds, a 81% of Yeongsan/Seumjin River unit watersheds, a 78% of Nakdong River unit watersheds, a 70% of Han River unit watersheds, respectively. Therefore, it has become important for establishment of effective management strategies to control refractory organic matter in watersheds of the Total Maximum Daily Loads (TMDLs). In order to properly manage organic matters including refractory organic matters, the present organic indicator (BOD) has to be converted to TOC (or COD). Compared to COD and BOD, TOC, as a organic matter indicator, is evaluated more appropriate. |