2003 年 52 巻 12Appendix 号 p. 282-286
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.