| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the following problem that use of a water introducing sheet enduring even when a sponge carrier sufficiently contains water increases not only the sheet thickness and cost but also the sheet weight, which requires strengthening of a structure of a reaction tank skeleton, and increases construction cost. <P>SOLUTION: In a sewage purifier where a purification belt made by arranging and fixing a plurality of columnar bodies made of a porous material on the surface of a support hangs, and sewage is supplied from above the purification belt to be purified, the support is made of a net member. A member which consists of weft and warp threads and forms a mesh pattern having a rectangular or square shape, a member which consists of warp threads, upper right diagonal threads inclined in the upper right diagonal direction, and lower right diagonal threads inclined in the lower right diagonal direction, has cross points of the upper right diagonal threads and the lower right diagonal threads on the warp threads, and forms a mesh pattern having a triangular shape, or the like is used as the net member. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
