Effect of Texture and Composition of Microorganisms Carrier for Disposal of Wastewater

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  • HIRASHIMA Yasushi
    Tokushima Prefecture Industrial Technology Center
  • MORIGA Toshihiro
    Department of Chemical Science and Technology, Faculty of Engineering, The University of Tokushima
  • ASHIDA Toshifumi
    Department of industrial Chemistry, Faculty of Engineering, Kinki University
  • KANEZAKI Eiji
    Department of Chemical Science and Technology, Faculty of Engineering, The University of Tokushima
  • MURAI Kei-ichiro
    Department of Chemical Science and Technology, Faculty of Engineering, The University of Tokushima
  • NAKABAYASHI Ichiro
    Department of Chemical Science and Technology, Faculty of Engineering, The University of Tokushima

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For cleaning-up the water quality of artificial non-fecal drainage, surface-treated porous bodies made of glass beads were used as carriers for microorganisms which have biological activity for the mitigation of pollutants in the water. The influence of chemical species used for coating the bodies and also the texture of the treated surface on the effectiveness of the mitigation of pollution was examined. Coating with calcium silicate, iron oxide and calcium oxide decreased CODMn of the artificial drainage significantly, thus indicating effectiveness for the mitigation of the pollution. The size of cavities which were generated as voids in the three dimensional arrangement of the differently-sized glass beads also affected the effectiveness of the pollution mitigation though the effectiveness was limited. It was concluded that chemical composition of the surface was the most important factor in acting as the carrier of the microorganisms.

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