| 摘要 |
<p>PURPOSE:To enhance contact efficiency by utilizing both a net pipe made of resin and a coupler made of resin as a contact material and integrating a plurality of net pipes in accordance with either load of sewage or the shape of a treatment vessel. CONSTITUTION:A mouthpiece 4 equipped with a projecting coupler 5 and a recessing coupler 6 is inserted into both ends of a net pipe 1. The contact material constituted of the aggregate of the net pipe 1 is obtained by connecting both the projecting coupler 5 of the mouthpiece 4 inserted into one net pipe 1 and the recessing coupler 6 of the mouthpiece 4 inserted into the other net pipe 1 in both ends of the net pipe. The length of the net pipe 1 and the number of the aggregate can be allowed to coincide with the shape of a treatment vessel. The net pipe 1 is excellent in sticking of a biomembrane and large in surface area and regularly holds the constant intervals. Therefore closure is not caused and water permeable resistance is made little and trapping of floating substance is excellent and contact efficiency is made extremely excellent. Further the contact material is made of resin and therefore is free from corrosion and also has effect capable of transport by disintegrating the contact material into the respective parts.</p> |
