The covered stream of cities are considered an odor source. Also, the public do not want a wastewater treatment plant(WWTP) near their properties due to the emission of odor emanating from such sources, although they play an important role in urban development. The purpose of this study is to analyze the pattern distribution of the odorous compounds from the Nambu WWTP and Youngho stream in Busan. odor sampled four times were analyzed by instrumental analysis method and indirect olfactory method. The kinds of offensive odorous compounds examined are acetaldehyde, propion aldehyde, hydrogen sulfide, methyl mercaptan, dimethyl sulfide and ammonia. Also, Concentration of air pollutants has been calculated by ISCST3 models. At the result of this study, The Nambu WWTP releases sulfur compounds. And the major odorous were hydrogen sulfide (1,475 ppb) and acetaldehyde (95 ppb) at Youngho stream. The stink which residents feel will point out the Nambu WWTP mainly if the odor is removed with the improvement of a Youngho stream. Accordingly, we should pay more attention to appropriate components to processes in odor reducing plan at Nambu WWTP.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 연구대상지역 현황
  2.2. 악취측정지점 선정
  2.3. 악취측정항목 선정
  2.4. 냄새세기와 악취물질농도와의 관계
  2.5. ISCST3 모델
 3. 결과 및 고찰
  3.1. 기상현황
  3.2. 악취 측정 결과
  3.3. 대기확산 모델링 결과
  3.4. 확산모델 검증
 4. 결 론
 참 고 문 헌

• 문성만(부산대학교 사회환경시스템공학과) | Seong-Man Mun (Department of Environmental Engineering, Pusan National University)
• 이형돈(부산대학교 사회환경시스템공학과) | Hyung-Don Lee (Department of Environmental Engineering, Pusan National University)
• 조상원(한국폴리텍Ⅶ대학 에너지환경과) | Sang-Won Cho (Department of Energy and Environment, Korea Polytechnic Ⅶ College)
• 강동효(부산환경공단) | Dong Hyo Kang (Environmental research center, Busan Environmental Corporation)
• 박해식(부산환경공단) | Hae-Sik Park (Environmental research center, Busan Environmental Corporation)
• 오광중(부산대학교 사회환경시스템공학과) | Kwang-Joong Oh (Department of Environmental Engineering, Pusan National University) Corresponding Author