| Title |
Water Quality Status of the Unit Watersheds in the Yeongsang/Seomjin River Basin since the Management of Total Maximum Daily Loads |
| Authors |
박재홍 ( Jae Hong Park ) ; 류덕희 ( Doug Hee Rhew ) ; 정동일 ( Dong Il Jung ) |
| Keywords |
BOD5; Target water quality; T-P; Water quality assessment |
| Abstract |
The results of investigation on the water quality of the unit watersheds in the Yeongsang/Seomjin River indicate that BOD5, SS, T-P decrease in most of the unit watersheds. However, CODMn and T-N increase since the Total Maximum Daily Loads (TMDLs). It is thought that CODMn, which is included non-biodegradable matters, is difficult to decrease only using by conventional biological treatment facilities and T-N is affected by non-point source, etc. The results of assessment on 3 years BOD5 indicate that most of the unit watersheds were being improved except Yeongbon A, Seombon C and Yocheon B. In addition, it was found that T-P were also being improved except Yocheon B and Hwangryeong A. Consequently, water qualities of the unit watersheds have been improved in many cases since the TMDLs. |