| 摘要 |
<p>A method for preparing a spiral wound filtration module (10) is provided. The module has a central permeate carrier tube (12). The method includes winding at least one filtration leaf about the permeate carrier tube (12). The filtration leaf includes a first membrane sheet (18), a permeate carrier sheet (16), and a second membrane sheet. The winding step creates an end face extending radially outwardly from the permeate tube (12) on each end thereof. After winding, the filtration module (10) is maintained in a wound state. An adhesive is then supplied to each end face and a vacuum is applied through each end of the permeate tube (12). While the vacuum is applied, the permeate tube (12) and filtration leaf assembly are spun in a centrifuge until the adhesive has solidified. After spinning, each end face of the module (10) is severed at a distance between the level of adhesive along the feed spacer screen (24) and the level of adhesive along the permeate carrier sheet (16).</p> |
