This study investigated water quality of effluents and stream from the sewage treatment plants located at Gumi Complex 4, Gumi, and Wonpyeong in Gumi. Downstream region was found to increase the concentration of nutrients for sewage treatment plant effluent. Both phosphorus and nitrogen were accounted most as soluble form. In particular, the high ratio of dissolved effluent of sewage treatment plants were investigated. In the streams, Phosphorus concentration was high during rainy season and nitrogen concentration was high in the dry season. Sewage treatment plant effluent was relatively less microbial activity and nutrient concentrations were higher in the winter. TN/TP ratio was the highest in the upstream region and the lowest in the sewage treatment plant effluent. The effect of the nutrient matter from a discharge of a sewage treatment plant on rivers varied depending on the size of the river and the treatment plant. However, the influence of the concentration was greater than that of flowrate. Sewage treatment plant effluent loads phosphorus, nitrogen accounted for 8% and 6% respectively at the point N3 of the Nakdong river.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 조사대상지의 개요
  2.2. 조사시기 및 수질분석
 3. 결과 및 고찰
  3.1. 하천 및 하수처리장 방류수의 N, P 변화
  3.2. 하수처리장 방류수 및 방류하천의 N, P 존재형태별분포
  3.3. 하수처리장 방류수 TP, TN이 방류하천에 미치는 영향
 4. 결 론
 참 고 문 헌

• 성진욱(금오공과대학교 환경공학과) | Jin-Uk Seong (Department of Environment Engineering, Kumoh National Institute of Technology)
• 이상팔(금오공과대학교 환경공학과) | Sang-Pal Lee (Department of Environment Engineering, Kumoh National Institute of Technology)
• 이재균(금오공과대학교 환경공학과) | Jae-Kyun Lee (Department of Environment Engineering, Kumoh National Institute of Technology)
• 박제철(금오공과대학교 환경공학과) | Je-Chul Park (Department of Environment Engineering, Kumoh National Institute of Technology) Corresponding author