WASTEWATER WOVEN FILTRATION FABRIC

摘要

A woven filtration fabric for supporting bacteria in a waste water treatment process is disclosed herein. The fabric includes short wrap threads (c) which remain static as water flows through the fabric, and long warp threads (d) which can move outwardly relative to the short warp threads (c) as the flow rate of water through the fabric increases thereby increasing the filtration area of the filter. The long warp threads (d) can form folds as the flow rate of water through the fabric is reduced thereby enabling a relatively large quantity of micro organisms to remain in the folds. The fabric also includes static weft threads forming woven strips (a) for supporting the warp threads (c,d).