| Popis: |
This study was conducted to investigate runoff characteristics of non-point pollutants source at the urban area in boeun area, Chungbuk Province. The monitoring site covering the watershed of 2.11 km 2 contains about 40.3 % of total watershed with the urban area. The monitoring was conducted with six events for five months and Event Mean Concentration(EMC) and Site Mean Concentration(SMC) of SS, BOD, CODMn, T-N, T-P were calculated on the result of the water quality parameters. As a result of the comparion between Arithmetic Mean Concentration and Event Mean Concentration, it showed that over all Event Mean Concentration was higher than Arithmetic Mean Concentration. And it showed that SS, BOD, T-P featured the first-flushing effect, showing relatively high concentration in early-stage storm event.Key words : Event mean concentration, Site mean concentration, First flush effect, Mass first flush ratio 1. 서 론 1) 경제발전과 더불어 인구의 증가, 도시화, 산업화에 따라 공공수역으로 유입되는 오염물질의 양이 수체의 자정능력을 초과하면서 수질오염이 심각해지고 있다. 공공수역으로 유입되는 오염물질은 크게 점오염원(point pollutants source)과 비점오염원(nonpoint pollutants source)으로 구분 할 수 있다. 이 중 점오염원은 환경기초시설의 설치로 크게 감소하고 있으나 비점오염원 |
