Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Study on the Characteristics of Gray Water from an Apartment Complex for Reuse

재이용을 위한 공동주택 Gray Water의 특성 연구

  • Park, Su Jeong (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Kwon, Oh Sang (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Tanaka, Hiroaki (Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University) ;
  • Kim, Chang Soo (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Kim, Eun Seok (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Kim, Ji Hye (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Jang, Seok Jea (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research) ;
  • Ahn, Kyung Hee (Water Supply and Sewerage Research Division, Environmental Infrastructure Research Department, National Institute of Environmental Research)
  • 박수정 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 권오상 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 다나카 히로아키 (교토대학 대학원 공학연구과 부속 유역권 종합환경질 연구센터) ;
  • 김창수 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 김은석 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 김지혜 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 장석재 (국립환경과학원 환경기반연구부 상하수도연구과) ;
  • 안경희 (국립환경과학원 환경기반연구부 상하수도연구과)
  • Received : 2013.09.02
  • Accepted : 2013.11.07
  • Published : 2013.11.30
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Abstract

This study describes the results of an investigation conducted in order to characterize the quantity and quality of individual gray water streams. The highest pollutants concentrations were found in gray water originating from kitchen and laundry with $BOD_5$ concentrations in the order of several hundreds $mgl^{-1}$. In contrast to this, bathroom was regarded as a major contributor of Escherichia coli. Laundry gray water has higher pH, sodium, sulfate, anionic surfactants. Individual gray water types had different contribution to the overall daily discharge and relative pollutants loads. Kitchen, although accounting for only 13% of the total volume, was identified as a major source of microorganisms with Total coliforms, Escherichia coli, Fecal streptococcus taking up 82%, 74% and 54% of their relative daily load, respectively. The laundry gray water, although being responsible for 36% of the total daily discharge, was established as a significant contributor of sodium, sulfate, anionic surfactants and TOC (70%, 72%, 84% and 52%, respectively). But the laundry gray water was a minor source of microorganisms. Bathroom was found to be a major gray water producer, making up 51% of the flow, but constituted less than 50% of the relative daily load in most cases.

Keywords

References

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