反渗透基本原理.ppt

文档介绍：反渗透ReverseOsmosis基本原理FUNDAMENTALS过滤类型TypesofFiltration死端过滤DirectFiltration沙或多介质SandorMultiMedia滤筒Cartridge横流过滤CrossFlowFiltration反渗透ReverseOsmosis纳滤Nanofiltroation超滤UltraFiltration微滤MicroFiltration进水FeedWater产品水ProductWater垂直过滤DirectFiltration垂直过滤DirectFiltrationProduct固体表面迅速形成过滤薄膜Solidsonsurfacequicklyfoulthemembrane反洗BackWash反洗水排放BackWashtoSewer垂直过滤进水FeedWater渗透水Permeate浓水Concentrate横流过滤CrossFlowFiltration横流过滤CrossFlowFiltration渗透水Permeate膜表面MembraneSurface浓差极化ConcentrationPolarization横流过滤CrossFlowFiltration需求记住的事项ThingstoRemember进水速度必须能保证固体杂质的移动 Lowwatervelocitywillallowthemembranesurfaceto“foul.”较高的水回收率(更高的水利用率)意味着较低的水流速 Higherwaterrecoveries(greaterwaterutilization)