RO反渗透系统技术培训.ppt

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1、反渗透（RO）培训2013年3月北京碧化科技有限公司简介：膜/反渗透及其应用AnINTRODUCTIONTOMEMEBRANE/REVERSEOSMOSIS&ITSBESTPRACTICE（交叉流/膜）过滤方法CrossFlowFiltrationMethods微过滤Microfiltration超滤Ultrafiltration超微过滤Nanofiltration反渗透ReverseOsmosis范围宏分子Macromolecular分子Molecular次分子Submolecular离子Ionic颗粒大小Particlesize1.0-0.

2、1mm0.1-0.01mm0.01-0.001mm<0.001mm去除Removes固体悬浮物,大的胶体,细菌Bacteria蛋白质Proteins,胶体Colloids,有机物Organics热原(质)Pyrogens,二价离子Divalentions滤过性微生物Virus小的有机物,金属Metals,盐alts分子量MolecularWeight>100,00010,000-100,000200-20,000<300操作压OperatingPressure10psig10-100psig200-250psig200-800psigPretre

3、atmentNeeds预处理需要LowMediumHighHigh投资成本CapitalCostLowMediumHighHigh膜构造MembraneConfigurations螺旋口SpiralWound中空纤维HollowFiber管状Tubular膜系统MembraneSystem反渗透ReverseOsmosisP1WaterStrongSolutionH2OH2OH2O渗透过程/工艺WaterStrongSolutionH2OH2OH2O反渗透过程/工艺P2术语表GlossaryofTermsConcentrateorreject浓缩

4、或损失/未渗透Permeateorproduct渗透或产物Percentrecovery回收率Percentsaltrejection盐损率/抗盐率反渗透基理进水FEEDWATER100gpm600ppmTDS渗透PERMEATE75gpm30ppmTDS5%盐通过SaltPassage75%回收Recovery未渗透REJECT95%盐损SaltRejection25gpm2310ppmTDS25%Reject两步骤RO系统Two-StageROSystem元件ELEMENTS进水FEED渗透PERMEATE高压泵HIGHPRESSUREPUM

5、PTRAIN#1TRAIN#2容器VESSEL2:1排列ARRAY进水FEEDREJECTREJECT渗透PERMEATE第一步1stSTAGE第二步2ndSTAGEREJECTRO设备TypicalROMachine膜对比MembraneComparisons醋酸纤维素Celluloseacetate薄膜合成ThinfilmcompositePH范围TypicalpHrange5.0-6.52.0-11.0平均未渗透率Average%rejection95%99%微生物病体MicrobiosusceptibilityYesNo温度限制Tempe

6、raturelimit35°C45°C氯承受力ChlorinetoleranceExcellentPoor操作压Typicaloperatingpressure400psig200psig离子通过TypicalPassageofIons*TFCelementratedfora95%NaClrejectionRO的优势WhatAretheAdvantagesofRO?去除非离子杂质和溶解的固体（如：有机物，无水硅酸，细菌）Removesnonionicimpuritiesanddissolvedsolids(i.e.organics,silica,

7、bacteria)减少了危险的化学品存储和与离子交换相关的操Reductionofhazardouschemicalstorageandhandlingassociatedwithionexchange减少了离子交换系统的装载Reducesloadingonionexchangesystems:延长运行周期Extendsrunlengths延长树脂寿命Extendsresinlife降低操作成本ReducesoperatingcostsRO的劣势WhatAretheDisadvantagesofRO?25%的进水未被渗透25%offeedstre

8、amisrejected渗透的5%TDS对HP锅炉不足5%TDSinpermeateinadequateforHPboilers最终过滤