文档介绍：反渗透Reverse Osmosis基本原理FUNDAMENTALS过滤类型过滤类型 Types of Filtration Types of Filtration死端过滤 Direct Filtration沙或多介质 Sand or Multi Media滤筒 Cartridge横流过滤 Cross Flow Filtration反渗透 Reverse Osmosis纳滤 Nanofiltroation 超滤 Ultra Filtration 微滤 Micro Filtration进水Feed Water产品水 Product Water垂直过滤 Direct Filtration垂直过滤 Direct FiltrationProduct固体表面迅速形成过滤薄膜Solids on surface quickly foul the membrane反洗 Back Wash反洗水排放 Back Wash to Sewer垂直过滤进水Feed Water渗透水Permeate浓水Concentrate横流过滤Cross Flow Filtration横流过滤 Cross Flow Filtration渗透水渗透水PermeatePermeate膜表面 Membrane Surface浓差极化Concentration Polarization横流过滤 Cross Flow Filtration需求记住的事项 Things to Remember进水速度必须能保证固体杂质的移动Water velocity of the feed must be sufficient to keep the solids water velocity will allow the membrane surface to “foul.”较高的水回收率(更高的水利用率)意味着较低的水流速Higher water recoveries (greater water utilization) means lower water The Filtration Spectrum