Pressure retarded osmosis (PRO) processes can be implemented on a number of water types, using different technologies and achieving various power outcomes. In this study, Sewage facility effluent was used for feed solution of PRO and synthetic NaCl water for draw solution. This study was conducted to investigate effect of water quality of pretreatment on power density and flux decline in PRO process. The results show that organic and particulate foulants have to be removed for more stable operation. Flourescence technique with EEM enables to investigate the chemical properties of aquatic organic matter by extracting spectral information. Humic/fulvic matters and soluble microbial by-products were analyzed as the most affecting factors on the PRO performance. As a result of analyzing the whole system based on the energy consumption of the unit process, specific energy consumption(SEC) of the applicable technology for PRO pre-treatment should be about 0.2 kWh/m3 or less.

• 구재욱(한국건설기술연구원) | Jae-Wuk Koo (Korea Institute of Civil Engineering and Building Technology)
• 남숙현(한국건설기술연구원) | Sookhyun Nam (Korea Institute of Civil Engineering and Building Technology)
• 심진우(과학기술연합대학원대학교) | Jinwoo Sim (Korea University of Science & Technology)
• 김은주(한국건설기술연구원) | Eunju Kim (Korea Institute of Civil Engineering and Building Technology)
• 최용준(국민대학교) | Yongjun Choi (Kookmin University)
• 황태문(한국건설기술연구원) | Tae-Mun Hwang (Korea Institute of Civil Engineering and Building Technology) Corresponding author