RO反渗透系统技术培训.ppt

北京海德能科技有限公司 北京海德能科技有限公司 北京海德能科技有限公司 北京海德能科技有限公司 简介：膜/反渗透 及其应用An INTRODUCTION TOMEMEBRANE / REVERSE OSMOSIS  ITS BEST PRACTICE （交叉流/膜）过滤方法Cross Flow Filtration Methods 膜构造 Membrane Configurations 螺旋口 Spiral Wound 中空纤维 Hollow Fiber 管状 Tubular 膜系统 Membrane System 反渗透 Reverse Osmosis 术语表 Glossary of Terms Concentrate or reject 浓缩 或 损失/ 未渗 透 Permeate or product 渗透 或 产物 Percent recovery 回收率 Percent salt rejection 盐损率 / 抗盐率 两步骤 RO系统 Two-Stage RO System 膜对比 Membrane Comparisons 离子通过 Typical Passage of Ions RO的优势What Are the Advantages of RO ? 去除非离子杂质和溶解的固体（如：有机物，无水硅酸，细菌）Removes nonionic impurities and dissolved solids (i.e. organics, silica, bacteria) 减少了危险的化学品存储和与离子交换相关的操Reduction of hazardous chemical storage and handling associated with ion exchange 减少了离子交换系统的装载 Reduces loading on ion exchange systems: 延长运行周期 Extends run lengths 延长树脂寿命 Extends resin life 降低操作成本 Reduces operating costs RO的劣势What Are the Disadvantages of RO? 25%的进水未被渗透 25% of feed stream is rejected 渗透的5%TDS 对HP锅炉不足 5% TDS in permeate inadequate for HP boilers 最终过滤器易被堵塞 Ultimate filter which is easily fouled : - 提高操作成本 Increasing operating costs - 降低树脂寿命 Reducing membrane life 操作成本细分 Typical Operating Cost Breakdown 反渗透膜的问题 RO Membrane Problems Fouling 污垢 微生物，残渣/泥沙，脏物，有机物，金属氧化物 Microbio, silt, crud, organics, metal oxides Scaling 水锈 天然盐 Mineral salts 无水硅酸 Silica 水解和降解 Hydrolysis or Degradation pH, Temperature, oxidants, biodegradation 离子污垢 Iron Fouling 膜退化/降解 Membrane Degradation 膜问题造成的结果 Results of Membrane Problems 水质降低 Reduced water quality 运行周期缩短 Shorter run lengths 提早更换膜 Premature membrane replacement 运行成本提高 Higher operating costs 厂商要求 Typical Manufacturer’s Requirements 性能改善指导方法Performance Enhancement Guidelines RO系统控制 RO System Monitoring 预处理控制 Pretreatment monitoring 残渣密度（SDI），混浊，pH，氧化剂 Silt Density (SDI), Turbidity, pH, oxidants 温度、压力、TDS Temperature, pressure, TDS 污垢物质（细菌、金属、硬度、无水硅酸） Foulants (bacteria, metals,