Various kinds of processes are used in the Public Sewage Treatment Works(PSTWs) in order to achieve water quality criteria and TMDL in the watershed. The performance of the existing processes at PSTWs depends on influent characteristics, effluent quality target, amount of sludge production, power cost and other factors. In present, the Selection Guideline for the Available Treatment Process of PSTWs is used for a process decision in the country. But there are some problems regarding redundancy of assessment factors and complexity of assessment procedure in the guideline. In this study, we did a test application of AHP for process selection of PSTWs, which propose is to simplify assessment factors such as pollutant removal amount, sludge generation, electricity consumption, stability of operation, convenience of maintenance, easiness of existing process application, installation cost, and operating cost concerning of environmental factors, technical factors and economical factors. According to the study, the PSTWs selection procedure guideline can be improved using application of AHP method.

1. 서 론
 2. 연구방법
  2.1 계층화분석법의 원리
  2.2 하수처리시설 공법 선정 체계
  2.3 하수처리시설 공법 선정을 위한 계층화분석법 적용및 가이드라인 개선 방안 도출
 3. 결과 및 고찰
  3.1 국내 하수처리시설 자료를 이용하여 공법 선정을위한 계층화분석법 적용
  3.2 “공공하수처리시설 공법 선정을 위한 가이드라인”개선 방안
 4. 결 론
 References

• 정동환(국립환경과학원) | Dong-Hwan Jeong
• 조양석(국립환경과학원) | Yangseok Cho
• 안경희(국립환경과학원) | Kyunghee Ahn
• 최인철(국립환경과학원) | In-Cheol Choi
• 정현미(국립환경과학원) | Hyen-Mi Chung Corresponding author
• 이재관(국립환경과학원) | Jaekwan Lee