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1，2113（1.，100083；2.，014030；3.，518066），：、、；（Ca2+2.5mmol/L），0.62.3m/s，；CaCl2Ca(HCO3)2（Ca2+2.5mmol/L），1.22.3m/s，。：、，，。；；；；InfluenceofPermanentMagneticFieldTreatmentonConductivityofIndustrialCirculatingWaterLiDongkui1,2JiangLili1ZuoHaibin1TanZanlin3(1.SchoolofMetallurgicalandEcologicalEngineering,UniversityofScienceandTechnology,Beijing100083,China;2.SchoolofInformationScienceandTechnology,BaotouTeacher'sCollege,BaotouInnerMongolia014030,China;3.ShenzhenYitianMagneticMaterialCo.Ltd.,ShenzhenGuangdong518066,China)ABSTRACTInthisresearch,thedevelopedwatertreatmentequipmentadoptingpermanentmagneticfieldwasusedtosimulatethephysicalhandlingprocessoftheindustrialcirculatingwatersysteminthelaboratory.Theexperimentshowthatthemagneticfieldintensity,processingtimeandflowratehavenotableimpactontheconductivityofcirculatingwa-ter;whenthecirculatingsolutionistapwater(Ca2+concentrationislessthan2.5mmol/L),velocityis0.6m/sor2.3m/s,theconductivityofthetreatedsolutionfirstlyincreaseswiththeincreasingofthemagneticfieldtreatmenttimeandthenpresentsthemulti-extremumproperty;whenthecirculatingsolutioniscalciumchlorideandcalciumbicarbonatemixedsolution(Ca2+concentrationisgreaterthan2.5mmol/L),velocityis1.2m/sor2.3m/s,theconductivityofthetreatedsolu-tionfirstlydecreaseswiththeincreasingofthemagnetictreatmenttimeandthenpresentsthemulti-extremumproperty.Theresultsshowthatchoosingtheappropriatemagneticfieldintensity,flowrateandprocessingtimeofcirculatingwater,theconductivityofthetreatedcirculatingwatercanbecontrolled,thehazardsofthescalinginthecirculatingwatersys-temmaybereduced.KEYWORDScirculatingwater;magneticfieldtreatment;two-wayANOVA；conductivity;scaleinhibition：（1963-），，，，：，。201112Dec.2011286Vol.28No.6CEMENTEDCARBIDE!!!!!!!!!!doi：10.3969/j.issn.1003-7292.2011.06.00728282828，，，、[1-3]。[4-5]。[6-8]。，[9-11]。，、、pH、，、[12-21]。。CaCO3，，，，。，Ca2+2.5mmol/L，CaCO3；2.5mmol/L，CaCO3[17-18]。，Ca2+、HCO3-1，[19]。，CaCO3，[20]。，pHCa2+，[18-21]。，、、，。。11.11，，，。1）（YT-CQY-0702）；300~34000Gs。（1Gs=10-4T）。2）。3）Mettler-ToledoDelta326。4）。5）Na2CO3、CaCl2（）。1.21.2.11）：300，7000，17000，2650034000Gs；0.6、1.22.3m/s。，。、。、、12h；2）：30L；0.6m/s；；300Gs。，1h，200mL，，（，，，，1Fig.1SimulatorofcirculatingwatertreatmentequippedwithPermanentMagneticFieldDevice（PMD）Submersible374··28282828，）、；12h，、。，；；30L，7000Gs，；；，。1.2.21.2.1，：2.22gNa2CO320L，，6.24gCaCl210L，，。1200mL、，，，1.5h1、，6。12h，，、。，，。1.3，，。Ca2+CO32-，，，Ca2+CO32-。Ca2+CO32-，，，CaCO3。，CaCO3，，，CaCO3。[25]。22.11、2、。2.2（Dixon）[22]，。1、2，*、**，，OriginPro8SR1，。3。33.11），0.6m/s，2（a），4；2.3m/s，2（b），5。0.62.3m/s（2.3m/s、300Gs1h），，2：。3，2.3m/s，；0.6m/s，。，12h（），12h，。0.6m/s，（）[16]；2）1.2m/s，3（a）；6；2.3m/s，3（b）；7。1.22.3m/s（2.3m/s，7000Gs3h），3：；3h。3，2.3m/s，；1.2m/s，，，12h，；3h，CaCO3Ca(HCO3)2，1.5hHCO3-，CaCO3，1.5hCO2，HCO3-，，“”[16]。,,,:375··28282828Circulatingwaterflowrate/(m/s)2.3Conductivityofsampleafterstandingfor12h0.6Conductivityofsampleafterstandingfor12h1.2Conductivityofsampleafterstandingfor12h1Table1Observedconductivityvaluesundervariousmagneticintensityandtreatmenttimewhencirculatingwateristapwater（Conductivity：μS/cm）Time/h012345xj012345012345xj012345012345xj012345300Gs579575590616607647*602.3573583568581582579557560576582586604577.5561570567571572707**682587591603625630619.7587584584568**5885857000Gs576585589608601612595.2582584571570569570560563573571579618577.3582561573561562559572580583605616599592.558.357256557457757417000Gs540552564569566592563.8560550541552562560569572581574600583579.8570582581583564577549565573575572590570.755455755555555355526500Gs570575592586609615591.2581582663**581582584562565568571576582570.7575585560564556569551557566582576584569.356855956455955755934000Gs573574575581609616588575583568575579570567566572573603606581.17575572573565*572577540553556573584567562.2544545552548551557xi567.6572.2582592598.4616.4563565.2574574.2588.8598.6577.33569.67576.33587597.83598.33Note:1.xiistheaverageconductivityunderthesamesampletimeanddifferentmagneticintensity;xiistheaverageconductivityunderthesamemagneticintensityanddifferentsampletime.2.Thedeviationvaluesaremarkedby*,theoutliersaremarkedby**.376··28282828Circulatingwaterflowrate/(m/s)2.3Conductivityofsampleafterstandingfor12h0.6Conductivityofsampleafterstandingfor12h1.2Conductivityofsampleafterstandingfor12h2Table2Observedconductivityvaluesundervariousmagneticintensityandtreatmenttimewhencirculatingwaterismixedsolution（Conductivity：μS/cm）Time/h01.534.567.5xj01.534.567.501.534.567.5xj01.534.567.501.534.567.5xj01.534.567.5300Gs960930961980984999976.892010791050959932925100997699699710011011998.33476472469466428**646-------------7000Gs10151447**1046100298910841027.29829129519739159399779349599839881044980.33917901909905900902994104510941074107210651057.3939944100199399699817000Gs997963994953109910631021.2943930945*934935930103810101020104110441093*10419729759699699559541067103610421053112210881068993100099899399298826500Gs9509531184126995210161074.2981938115212179098701004984100210049791015998942940943941931921105810241026109910639921044100198498297496996534000Gs986965969988103810631008.893492491792893095