電去離子edi脫除硅、硼的研究

1、同濟(jì)大學(xué)碩士學(xué)位論文電去離子（EDI）脫除硅、硼的研究姓名：張亞峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：市政工程指導(dǎo)教師：聞瑞梅20031201電去離子(EI)I)脫硅，硼的研究ABSTRACTABSTRACTBoththemethodandtheprincipleforthesiliconandboronremovalfromultrapurewaterbyelectrodeionization(EDI)fireresearchedanddiscu

2、ssedinthisarticleFouraspectsareincludedintheresearchWOrk：studyontheelectricalresistanceofEDI，studyonsiliconremovalbyEDI，studyonboronremovalbyEDI，principleofsiliconandboronremovalbyEDIEffectsofoperatingconditionsareinvest

3、igatedinthestudyonelectricalresistanceofEDITheoptimumoperatingconditionsthatwillprovideevidencesfornextstudiesareobtainedbyexperiment：TheoperatingvoltageisestablishedtObe40～60Vandthecurrentisabout35A；theconductivityofcon

4、centratewaterisabove1501ts／cm；theflowofdilutewaterandconcentratewateris12l／minandO08I／rainrespectivelyThemethodsofsiliconremovalbyEDIfromultra—purewaterareinvestigatedinthestudyonsiliconremovalbyEDIInourexperiment，theopt

5、imumoperatingconditionsofsiliconremovalincludingvoltage，conductivityandflowofconcentratewateranddilutewaterandpHvaluesareobtained：Ifthesiliconconcentrationininletwaterishigh，thevoltageisabout55v，ifthesiliconconcentration

6、ininletwaterislowthevoltageis38v；Theconductivityofdilutewaterisbelow409s／cm；Iftheconductivityofconcentratewaterisabout2001as／cm，theflowofbrinepumpis065l／h；Theoptimumflowsofconcentratewaterdilutewaterandelectrodewaterarea

7、doptedaslowastheyarepermittedpHvaluesis78Withlmg／Lsiliconconcentration，wehavesuccessfullydecreasedsiliconconcentrationininletwaterto266pg／L，whichisthebestresulteverobtainedinchinaThemethodsofboronremovalbyEDIfromultrapur

8、ewaterareinvestigatedinthestudyonboronremovalbyEDIByexperiment，theoptimumoperatingconditionsofboronremovalincludingvoltage，conductivityandflowofconcentratewateranddilutewaterandpHareobtained：Thevoltageisabout38v；Thecondu

9、ctivityofdilutewaterisbelow40s／cm；Theconductivityofconcentratewaterisabout350p_s／cm；Theoptimumflowsofconcentratewaterdilutewaterandelectrodewaterarechosenaslowastheyarepermitted；pHvaluesis58Theboronconcentrationinwateris

10、decreasedfromO05m∥1to0881tg／1Inaddition，theprincipleofsiliconandboronremovalbyEDIisdiscussedfromthreeaspects：ionizationofsiliconandboron，adsorptionofresinsandtransferinelectricfieldKeywords：ultra—purewaterEDI(electrodeio