反渗透渗出进水水质请求(国外英文资料).doc

反渗透进水水质要求(国外英文资料) Reverse osmosis water quality requirement It causes the film pollution index permitted The solution Suspended matter etc. turbidity 1 ntu Filtration, flocculation, microfiltration, ultrafiltration SDI15 Filtration, flocculation, microfiltration, ultrafiltration Particulate matter 100 / ml Filtration, flocculation, microfiltration, ultrafiltration microbial 1 / ml Sterilization, microfiltration, ultrafiltration Metal oxide Iron, Fe3 + The 50 ug/l Oxidation + precipitation or filtration manganese The 50 ug/l Using dispersants Fouling material Calcium carbonate LSI 0 Recovery, PH, scale inhibitor Calcium sulphate 230% Recovery, scale inhibitor Barium sulfate 6000% Recovery, scale inhibitor Strontium sulfate 800% Recovery, scale inhibitor Calcium fluoride The concentration of concentrated water is 1.7 mg/l The recovery rate of Calcium phosphate The concentration of the concentration cannot exceed the solubility The recovery rate of silica 100% The recovery rate of Organic matter oil 0 Air flotation, adsorption The TOC The 10 mg/l Activated carbon, filtration, adsorption resin COD The 10 mg/l Activated carbon, filtration, adsorption resin BOD 5 mg/l Activated carbon, filtration, adsorption resin PH 3-10 Add acid or base adjustment The temperature 5-450 - c Heat exchanger oxidant Residual chlorine 0.1 mg/l Reductant, activated charcoal adsorption ozone 0 other 0 The surfactant Be careful when choosing a cationic or amphoteric surfactant alcohol 10% N/A pretreatment Remove the colloid and particulate matter 1 medium filter The common method of removing suspended solids from water is multi-media filtration. A multi-media filter is made of layers of anthracite, quartz sand, crushed garnet or other materials. The top layer of the bed is made of light and quality materials, while the heaviest and finest materials are placed at the bottom of the bed. The principle is to filter by depth - the larger grains are removed at the top, and smaller pa