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DOI : 10.17640/KSWST.2017.25.1.71 ,    Vol.25, No.1, 71 ~ 79, 2017
Title
Enhanced Microbial Growth Inhibitation by Non-Oxidizing Biocide Injection in Reverse Osmosis Process
박덕준 Duk Joon Park , 오은정 Eun Jung Oh , 강은희 Eun Hee Kang , 김병군 Byung Goon Kim , 김홍석 Hong Suck Kim
Abstract
RO membrane`s surface that accumulated biofilm(biofouling) is removed by disinfectant(biocide). Usually biocide for RO`s biofouling removal uses oxidizing biocide(NaOCl) and non-oxidizing biocide. At the condition that have a high concentration of biofilms was more removed by only using the non-oxidizing biocide on the RO membrane surface than using both oxidizing and non-oxidizing biocide. Also the single use of non-oxidizing biocide enhanced operating time of RO membrane and that reducing differential pressure`s rising and minimizing the operating cost by the stop using RO`s Chemicals ; NaOCl and NaHSO3.
Key Words
Reverse osmosis membrane, biofouling, biocide, oxidizing disinfectant
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