Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of coagulation-UF pretreatment on pressure retarded osmosis membrane process

응집-UF 전처리 공정이 압력지연삼투 공정에 미치는 영향

  • Goh, Gilhyun (Department of R&D, MEMCOREA Co.,Ltd.) ;
  • Kim, Suhyun (Department of R&D, MEMCOREA Co.,Ltd.) ;
  • Kim, Jungsun (Universal Environment Policy Institute) ;
  • Kang, Limseok (Department of Environmental Engineering, Pukyong national University)
  • 고길현 ((주)한국멤코 연구전담부서) ;
  • 김수현 ((주)한국멤코 연구전담부서) ;
  • 김정선 (국제환경정책연구원 연구개발실) ;
  • 강임석 (부경대학교 환경공학과)
  • Received : 2021.05.20
  • Accepted : 2021.08.10
  • Published : 2021.08.15
Download PDF
⟨ Previous Next ⟩

Abstract

Osmotic power is to produce electric power by using the chemical potential of two flows with the difference of salinity. Water permeates through a semipermeable membrane from a low concentration feed solution to a high concentration draw solution due to osmotic pressure. In a pressure retarded osmosis (PRO) process, river water and wastewater are commonly used as low salinity feed solution, whereas seawater and brine from the SWRO plant are employed as draw solution. During the PRO process using wastewater effluent as feed solution, PRO membrane fouling is usually caused by the convective or diffusive transport of PRO which is the most critical step of PRO membrane in order to prevent membrane fouling. The main objective of this study is to assess the PRO membrane fouling reduction by pretreatment to remove organic matter using coagulation-UF membrane process. The experimental results obtained from the pretreatment test showed that the optimum ferric chloride and PAC dosage for removal of organic matter applied for the coagulation and adsorption process was 50 mg/L as FeCl3 (optimum pH 5.5). Coagulation-UF pretreatment process was higher removal efficiency of organic matter, as also resulting in the substantial improvement of water flux of PRO membrane.

Keywords

Acknowledgement

이 논문은 부경대학교 자율창의학술연구비(2020년)에 의하여 연구되었습니다.

References

  1. Altaee, A. (2012). Forward osmosis, potential use in desalination and water reuse, J. Membr. Sep. Technol., 1, 79-93.
  2. Amirtharajah, A., and Mills, K.M. (1982). Rapid-Mix Design for Mechanisms of Alum Coagulation, J. Am. Water Works Assoc., 74(4), 210-216. https://doi.org/10.1002/j.1551-8833.1982.tb04890.x
  3. APHA-AWWA-WEF. (2012). Standard methods for the examination of water and wastewater, 22nd ed. APHA AWWA WEF.
  4. Baker, J.S. and Dudley, L.Y. (1998). Biofouling in membrane systems-a review, Desalination, 118(1-3), 81-90. https://doi.org/10.1016/S0011-9164(98)00091-5
  5. Chen, S.C., Amy, G.L., Chung, T.S. (2016). Membrane fouling and anti-fouling strategies using RO retentate from a municipal water recycling plant as the feed for osmotic power generation, Water Res., 88, 144-155. https://doi.org/10.1016/j.watres.2015.10.008
  6. Chen, S.C., Wan, C.F., Chung, T.S. (2015). Enhanced fouling by inorganic and organic foulants on pressure retarded osmosis (PRO) hollow fiber membranes under high pressures, J. Membr. Sci., 479, 190-203. https://doi.org/10.1016/j.memsci.2015.01.037
  7. Delgado, S., Diaz, F., Garcia, D., and Otero, N. (2003). Behaviour of inorganic coagulants in secondary effluents from a conventional wastewater treatment plant, Filtr. Sep., 40(7), 42-46. https://doi.org/10.1016/S0015-1882(03)00732-8
  8. Filmtec. (2021). FilmtecTM Reverse Osmosis membrane Technical Manual, Dupont Water Solutions.
  9. Fritzmann, C., Loowenberg, J., Wintgens, T., Melin, T. (2007). State-of-the-art of reverse osmosis desalination, Desalination, 216, 1-76. https://doi.org/10.1016/j.desal.2006.12.009
  10. Hawang, J.E., Kang, L.S., Kim, S.H., Yoon, C.H. (2000). Variation of natural organic matter characteristics through water treatment processes, J. Korean Soc. Environ. Eng., 22(7), 1253-1261.
  11. Hong S., Lee S., Kim J. H., Kim J. H. and Ju Y. (2011). Evolution of RO process for green future, Korea Ind. Chem. News, 14(6), 9-20.
  12. Howe, K.J. and Clark, M.M. (2002). Coagulation pretreatment for membrane filtration, AWWA research Foundation, Denver, AWWARF&AWWA.
  13. Lee, S.H., Choi, J.S., Hwang, T.M. (2013). What can we expect on the next generation desalination technology in the future civil and environmental engineering?, The magazine of the Korean Society of Civil Engineers, 61(5), 102-107.
  14. Lee, S., Choi, J., Park, Y.G., Shon, H., Ahn, C.H., Kim, S.H. (2019). Hybrid desalination processes for beneficial use of reverse osmosis brine: Current status and future prospects, Desalination, 454, 104-111. https://doi.org/10.1016/j.desal.2018.02.002
  15. Li, Q. and Elimelech, M. (2004). Organic fouling and chemical cleaning of nanofiltration membrane: Measurements and mechanisms, Environ. Sci. Technol., 38(17), 4683-4693. https://doi.org/10.1021/es0354162
  16. Loeb, S. (1976). Production of energy from concentrated brines by pressure retarded osmosis: I. Preliminary technical and economic correlations, J. Membr. Sci., 1(1), 49-63. https://doi.org/10.1016/S0376-7388(00)82257-7
  17. Park, S., Seo, J., Kim, T. (2018). Environmental Impacts of Brine from the Seawater Desalination Plants, J. Environ. Impact Assess., 27(1), 17-32. https://doi.org/10.14249/eia.2018.27.1.17
  18. Phillip, W.A., Elimelech, M. (2011). The future of seawater desalination: energy, technology, and the environment, Sci., 333, 712-717. https://doi.org/10.1126/science.1200488
  19. Randtke, S.J. (1988). Organic contaminant removal by coagulation and related process combination, J. AWWA, 80(5), 40. https://doi.org/10.1002/j.1551-8833.1988.tb03037.x
  20. Robert, C.C., Stuart, W.K., James, F.G., and Kevin, L.W. (1995). Enhanced coagulation: A preliminary evaluation, J. AWWA, 87(2), 91-103. https://doi.org/10.1002/j.1551-8833.1995.tb06321.x
  21. She, Q., Wong, Y.K.W., Zhao, S., Tang, C.Y. (2013). Organic fouling in pressure retarded osmosis: Experiments, mechanisms and implications, J. Membr. Sci., 428, 181-189. https://doi.org/10.1016/j.memsci.2012.10.045
  22. Thelin, W.R., Sivertsen, E., Holt, T., Brekke, G. (2013). Natural organic matter fouling in pressure retarded osmosis, J. Membr. Sci., 438, 46-56. https://doi.org/10.1016/j.memsci.2013.03.020
  23. Thurman, E.M. and Malconlm, R.L. (1981). Preparative isolation of aquatic humic substances, Environ. Sci. Technol., 15(4), 463-466. https://doi.org/10.1021/es00086a012
  24. Volk C., Bell K., Ibrahim E., Verges D., Amy G. and Le Chevallier M. (2000). Impact of enhanced and coagulation on removal of organic matter and its biodegradable fraction in drinking water, Water Res. 34(12), 3247-3257. https://doi.org/10.1016/S0043-1354(00)00033-6
  25. Voutchkov, N. (2018). Energy use for membrane seawater desalination-current status and trends, Desalination, 431, 2-14. https://doi.org/10.1016/j.desal.2017.10.033
  26. Wakeel, M., Chen, B., Hayat, T., Alsaedi, A., Ahmad, B. (2016). Energy consumption for water use cycles in different countries: a review, Appl. Energy, 178, 868-885. https://doi.org/10.1016/j.apenergy.2016.06.114
  27. Yip, N.Y., Elimelech, M. (2013). Influence of natural organic matter fouling and osmotic backwash on pressure retarded osmosis energy production from natural salinity gradients, Environ. Sci. Technol., 47, 12607-12616. https://doi.org/10.1021/es403207m
  28. Zularisam, A.W., Ismail, A.F., and Salim, R. (2006). Behaviours of natural organic matter in membrane filtration for surface water treatment-a review, Desalination, 194(1-3), 211-231. https://doi.org/10.1016/j.desal.2005.10.030