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A study on characteristics of filters for domestic household water purifier

국내 가정용 정수기 필터의 특성 분석에 관한 연구

  • Cho, Jae-Ik (Department of Architectural Engineering, Pusan National University) ;
  • Kim, Gil-Tae (Land & Housing Institute) ;
  • Ahn, Young-Chull (Department of Architectural Engineering, Pusan National University)
  • Received : 2013.02.26
  • Accepted : 2013.05.16
  • Published : 2013.07.31

Abstract

It is important to establish water treatment technologies for drinking water because Korea belongs to water-stressed country. Leachate from recent incident of foot-and-mouth disease has become an opportunity to be aware of the need to manage water quality. Water purifiers are adopted to four or five steps of filtration process. Each steps are composed of a sediment filter, a pre-carbon filter, an UF or a RO membrane filter and a post-carbon filter. And additionally a ceramic filter can be used as a final stage. In this study, operational conditions in each steps are examined and characteristics of each filters are investigated. SEM analysis is used for filter surface and shape investigation using 6 commercial samples. Pore sizes of the sediment filter, the UF membrane filter, and the RO membrane filter are 30~47 ${\mu}m$, 0.005~0.5 ${\mu}m$, and 0.025~0.25 ${\mu}m$, respectively. Specific surface areas of activated carbons are ranged from 622 to 1,308 $m^2/g$.

물 부족 국가인 우리나라는 정수를 위한 설비시설을 확보하는 것이 무엇보다 중요하다. 그럼에도 불구하고 잦은 수질오염사고와 최근의 구제역으로 인한 가축 매몰지의 침출수 문제 등은 엄격한 수질관리의 필요성을 다시 한 번 깨닫는 계기가 되었다. 현재 가정용 정수기는 4단계 또는 5단계 정수처리 시스템을 적용하고 있으며 각 단계는 Sediment filter, Pre-carbon filter, UF/RO membrane filter, Post-carbon filter로 구성되어 있고 5단계는 Ceramics filter를 마지막 단계에 추가하여 구성하고 있다. 본 연구는 국내 가정용 정수기 필터의 물리적 특성을 파악하는 것이며 6개 사의 시제품을 통하여 분석하였다. 필터의 표면과 형상의 관찰은 SEM 분석을 통하여 이루어졌으며 Sediment filter, UF membrane filter, RO membrane filter의 기공의 크기는 30~47 ${\mu}m$, 0.005~0.5 ${\mu}m$, 0.025~0.25 ${\mu}m$의 분포를 보였고 활성탄의 비표면적은 622 ~ 1,308 $m^2/g$의 분포를 보였다.

Keywords

References

  1. Minister of Land, Transport and Maritime Affairs, http://www.mltm.go.kr/USR/policyData/m_34681/dtl.jsp? search = 물&srch_dept_nm=&srch_dept_id=&srch_usr_nm= &srch_usr_titl=Y&srch_usr_ctnt=&search_regdat e_s=&search_regdate_e=&psize=10&s_category =p_sec_3&p_category=&lcmspage=1&id=226, Accessed February 20, 2013.
  2. M. Echegaray, Membrane Filtration and Water Desalination, USA: Wexford, 2008.
  3. Ministry of Environment, http://www.me.go.kr/ web/286/me/common/board/detail.do?boardId=no tice_02&decorator=me&idx=183061, Accessed February 20, 2013.
  4. Korea Water Purifier Industry Cooperative, http://211.47.151.18:8002/comun/archives_view. aspx?tbl=BOARD10&mode=&searchtype=&sear chstr=&idx=2049, Accessed February 20, 2013.
  5. ImFact, Status of the Water Industry and Business Prospects, ImFact Publishing Co., Korea, 2011.
  6. S. H. Jung, A Study on the Filtration Characteristics of Electro-positively Charged Nano-fiber Filter in Water, M.S. thesis, Department of Mechanical Engineering, Pusan National University, Korea, 2005.
  7. J. D. Kim, Evaluation of Optimal Operating Condition for Water Treatment using Microfiltration System, M.S. thesis, The University Seoul, Korea, 2008.

Cited by

  1. 정수기 공급수인 수돗물과 정수기 통과수의 수질차이 분석 vol.33, pp.5, 2019, https://doi.org/10.11001/jksww.2019.33.5.395