This study was carried out to develop pilot plant Net3FM(Net Fit Fiber Filter Module) system and to suggest optimum operating condition for municipal wastewater reuse. SS concentration of biologically treated sewage effluent was reduced from 1.5~5.4mg/L to 0.4~1.0mg/L without coagulant injection in Net3FM system, and the SS removal efficiency was average 84.7%. And also, the removal efficiencies of COD and T-P were decreased slightly due to the SS removal by filtration. Coagulation-Filtration test was conducted to enhance the removal efficiencies of SS and T-P. The optimum dosage of coagulant was injected automatically by auto-controlling system, which is controlled by detecting value of turbidity of secondary sewage effluent. SS, COD and T-P concentrations in filtrated effluent were 0.21~0.57, 1.6~6.2 and 0.137~0.392mg/L with coagulant injection by in-line mixer in Net3FM system, respectively. The removal efficiencies of SS and T-P were highly increased to 92.8% and 89.8%, respectively. It was due to the combined the processes of coagulation and filtration. Net3FM system was evaluated that the removal efficiency of pollutants in secondary sewage effluent and the utilization potential as reclaimed water technology were very high.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험장치 제작
  2.2. 실험방법
 3. 결과 및 고찰
  3.1. 오염물질 제거 특성
  3.2. 역세주기 및 수량
  3.3. 물 재이용을 위한 응집제 주입 자동제어 시스템 구축
 4. 결 론
 참 고 문 헌

• 김정숙((주)케이이피) | Jeongsook Kim (KEEP Co., Ltd)
• 김미란((주)케이이피) | Mi-Ran Kim (KEEP Co., Ltd)
• 조명찬(동서대학교 에너지환경공학과) | Myung-Chan Jo (Department of Energy and Environment Engineering, Dongseo University)
• 장정국(동서대학교 에너지환경공학과) | Jeong-Gook Jang (Department of Energy and Environment Engineering, Dongseo University) Corresponding author