Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Reuse of Weaving Wastewater with BAF Process

BAF 공정을 이용한 제직폐수의 재이용

  • Jung, Yong-Jun (Dept. of Environmental Engineering, Kyungpook National University) ;
  • Bae, Jong-Hong (Dept. of Environmental Engineering, Kyungpook National University) ;
  • Kwon, Koo-Ho (Dept. of Environmental Engineering, Kyungpook National University) ;
  • Min, Kyung-Sok (Dept. of Environmental Engineering, Kyungpook National University)
  • Received : 2004.08.26
  • Accepted : 2004.10.20
  • Published : 2004.11.30
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Abstract

An upflow BAF(Biological Aerated Filter) equipped with an expanded clay media was applied to reuse weaving wastewater of water jet loom. The performance of lab-scale biofilter was investigated by the adjustment of EBCTs(Empty Bed Contact Time) and the packing ratio of media, which were changed 1.1 to 3.7hr and 38 to 63%, respectively. In most conditions except 1.1hr of EBCT, BOD, CODcr, SS and Turbidity of the effluent were 1~4mg/L, 7~16mg/L, 1~5mg/L and 5~14NTU, where their removal efficiencies were 76~95%, 82~93%, 63~94% and 59~81%, respectively. From the observation of SEM(Scanning Electron Microscope) photographs of porous clay media, it was revealed that this media provided good performance of retaining microbes effectively. In addition, $0.44~0.49kgVSS/kgBOD_{rem}$. of low sludge reduction was expected. The most efficient back washing cycle and procedure were once per 4 to 9 days and air including collapse-pulsing method, respectively. Therefore, this system can be of use as an weaving wastewater treatment for reuse.

Keywords

References

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