Feed spacer

New spiral wound element improvements have been made so that RO/NF products are more robust. One improvement is the design of vents in the seal carrier or ATD’s on the ends of the elements. This feature has proven to quickly equalize the pressure on the inside of and outside of the element and preve

In spiral-wound membrane modules, spacers are used to enhance wall shear stress and to promote eddy mixing, thereby reducing wall concentration and fouling. Insights into the effect of spacer filaments on flow patterns in narrow channels were obtained using a computational fluid dynamics (CFD) code.