强化混凝—超滤工艺在微污染水源水处理中的应用研究

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1、强化混凝一超滤工艺在微污染水源水中的应用研冗使用的混凝剂为AS2mg／L+PD2mg／L，超滤膜出水稳定差值为17．81g(间隔30s)。(4)强化混凝一超滤工艺中从膜出水稳定差值看PES／nTi02超滤膜优于PES／nAg超滤膜优于传统PES超滤膜，从有机物去除效果看PES／nAg超滤膜优于PES／nTiOz超滤膜优于传统PES超滤膜。综合来看耐污染性PES超滤膜比传统PES超滤膜净化水质效果更优。(5)以AS+PD为混凝剂，强化混凝一超滤工艺比单一混凝工艺在投加量上更低，可以在保证出水水质质量的基础上，降低混凝工艺的操作条件。与

2、单一超滤工艺相比，在单位时间内超滤膜的污染度更低，过滤的水样更多。关键词：强化混凝一超滤；膜污染；有机物；混凝剂II济南大学硕士学位论文AbstractUltrafiltrationasanadvancedwatertreatmentprocesshasbeenusedwidelyinwaterandwastewatertreatmentbecauseofRsadvantagessuchassimplifieddevice，smallfootprintand、析deapplicationrange．However,thereales

3、everaldeficienciesbyultrafiltration，suchasremovalefficiencyoforganicmatterisnotenough；membranefoulingleadstohighcost．Coagulationtechnologyappearstoyieldsomebeneficialeffectswhenasapretreatmentmembranefiltrationbecauseofitslowcostandsimpleoperation，whichcanimprovetheult

4、rafiltrationtechnologyforwaterandwastewatertreatmenteffect，reducemembranefoulinganddecreasecost．Solinkultrafiltrationprocessandcoagulationprocessofenhancedcoagulation—ultrafiltrationprocesshasbeenextensivelystudiedwhichasaadvancedwatertreatmenttechnology,Inthispaper,th

5、reekindsofPESultrafiltrationmembraneWasfirstprepared，andthethreekindsofultrafiltrationmembraneappliedtosingleultra_filtrationprocessandenhancedcoagulation-ultrafiltrationprocess．Theexperimentstudiedthetreatmenteffectofmicro-pollutedsourcewaterbydifferentprocessesandthe

6、operationconditionsofultrafiltrationmembrane．Theresultsshowedthat：(1)TwokindsofstainresistancePESultrafiltrationmembrane(PES／nAgultrafiltrationmembraneandPES／nTi02ultrafiltrationmembrane)Wasobtainedbyorthogonalexperiment．ThePES／nAg’spurewaterfluxandrateofBSArejectionis

7、354．21L／m2·k95．82％andPES／nTi02'sis363．74L／m2·h，92．71％．StainresistancePESultra_filtrationmembraneishigherthantraditionalmembraneonpurewaterfluxandrateofBSArejection．TwokindsofstainresistancePESultrafiltrationmembraneispreparedonthebasisoftraditionalmembrane，whichhaveahi

8、gherwaterfluxandrejectionrate．(2)Whensingleultrafiltrationprocesshandlesmicro-pollutedsourcewater,PES／nTi02ultrafiltr