| 摘要 |
<p>PURPOSE:To prevent deformation such as bending by using a hanging means and supporting stereonetwork fabric material between supporting plates via a plurality of spacers. CONSTITUTION:Band-shaped reinforcing bands 8 are bonded in a range over the whole width to one surface of both end parts and intermediate part of the lengthwise direction of intermediate nonwoven fabric 3a. Long holes for passing bolts 5 of the uppermost and lowermost parts of a carrier module are provided to the reinforcing bands 8 together with the intermediate nonwoven fabric 3a in the lengthwise direction. Furthermore a long hole for passing a bolt 5 of the other part is bored on the intermediate fabric 3a in the lengthwise direction. Thereby, the module can be freely moved without being restrained by any force. Therefore, it is difficult-to be clogged and treatment efficiency of waste water can be improved.</p> |
