해양으로 유입되는 도심 하천의 비점오염물질 특성에 관한 연구

A Study on the Characteristic of Non-point Source Pollutants Streaming down Ocean

&nbsp;&nbsp;It is now recognized that controlling the pollution entering the rivers and coasts from non-point sources, including agricultural and urban runoffs, is of great urgency.<BR>&nbsp;&nbsp;In this paper, Quantity and quality of basins streaming down ocean were surveyed and concentration of biological oxygen demand(BOD), Chemical oxygen demand(COD), Suspended solids(SS), heavy metal, etc. were measured. The results showed that:<BR>&nbsp;&nbsp;1. On dry weather, a quantity of Gamjeon basin is 0.18CMS in the summer but 0.11CMS in the winter.<BR>&nbsp;&nbsp;2. Gamjeon basin&quot;s quality was represented that BOD, COD, T-N and T-P was 115㎎/L(max), 163㎎/L(max), 12.9～27.0㎎/L, and 0.40～1.43㎎/L. on the other hand the heavy metal was appeared serious pollution. Hakjang was represented that BOD and COD was 15.7～43.0㎎/L, 12.0～52.9㎎/L respectively.<BR>&nbsp;&nbsp;3. During the wet weather, quantities of Gamjeon and Hakjang were peaked in one hour and pollutant loading was similar. Peak quantity of Gamjeon and Hakjang basin was 18CMS and 25.25CMS.<BR>&nbsp;&nbsp;4. Gamjeon basin&quot;s quality was represented that maximum BOD concentration was 250㎎/L and Do concentration of Hakjang basin was 0.64～13.2㎎/L. Heavy metal concentrations of Eomgung area was over the guide line;Cd and Cr？？ were estimated to be 0.1㎎/L and 0.197㎎/L.<BR>&nbsp;&nbsp;5. It is clear that runoff load by urban non-point source pollutants plays important role in the control and management of non-point sources for the watershed.