化学沉淀法处理离子交换含盐废水试验王晓晖

2013201ChemicalProductionandTechnology!!!!!!!!!!!!!!：2012-11-02王晓晖徐晓卜二军朱文玲（河北钢铁集团邯钢公司，河北邯郸056015）在原有的离子交换系统中增加一个回收系统，分步沉淀处理后去除废水中大部分的钙镁离子，清液作为再生剂回用的同时得到钙盐镁盐2种副产品，低含盐废水可静置澄清后回用作清水，试验了各种工艺条件的影响。结果表明，以NaOH为主剂的沉淀剂A进行第1步沉淀，沉淀分离后再投加以Na2CO3为主剂的沉淀剂B进行第2步沉淀，对硬度离子的去除效果更好；使用回用的再生剂处理树脂后生产的软化水在一定时间内没有检测出硬度离子；所得CaCO3的质量分数为97.2%纯度较高，可作为化工原料出售；浓盐废水作为再生剂回用前先要补充氯化钠，并用盐酸中和处理。离子交换；含盐废水；回用；分步沉淀；副产品TQ028.3+3ADOI10.3969/j.issn.1006-6829.2013.01.013，0，，[1]。，，，，。，[2]。、、，，、，，，[3-4]。11.1：、、、，；732，NaOHA，Na2CO3B。：、、、、。1.2=2c(Mg2+)M(NaOH)，=2c(Ca2+)M(Na2CO3)。，c(Mg2+)c(Ca2+)Mg2+Ca2+，M(NaOH)M(Na2CO3)NaOHNa2CO3。1.3：500g732，、3%5%，。：，5L/h，，0，，，[5]。187L。1.4，，5%1L/h，。1.51.5.1，。，·39·，。，，，50mL，，1，，，Mg2+Ca2+。1Fig1Hardnessionsconcentrationdiagramofregenerationwastewater1，，，Ca2+Mg2+4.414、3.600mg/L。Ca2+Mg2+，。1.5.2，。，。22.12.1.1，，，。1。1Tab1Analysisresultsofwashingandbuckwashingwastewater2.1.2，，。A1，B2。，2。2Tab2Treatmentresultsofsaliferouswastewaterbychemicalprecipitation：，22，3。2。3。2.21A1，B2；2B1，A2。3。3Tab3Influenceofprecipitatoraddingsequenceontreatmentresultsofsaliferouswastewater：3。3，1，，2Ca2+。2.34。4，，，，pH，，。/(mg
L)CaMg59.035.839.127.911.87.2(Ca)/(mg
L)(Mg)/(mg
L)/%  CaMg138730.01340820.01199.999.92393739620.01610099.6341403600100100
/%12 CaMgCaMg15970.510010028955.399.199.9ρρρ·40·2013201ChemicalProductionandTechnology!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!/(mg
L-1)Ca2+Mg2+ /h/L017.487111.758.5211.256310.653410.753.52.45。5Tab5Influenceofdifferentaddingsequenceonpurityofproducts：3。5，，，1AB，Mg(OH)2CaCO374.2%97.2%。CaCO3，。2.52，，，，，，，。6。6Tab6Iufluenceofsodiumchloridereplenishedonsofterwaterqualityproducedbyresin：5%～10%。2.6A，，，7。7Tab7Influenceofhydrochloricacidonsaliferouswastewatertreatment7，，pH。3，，，；。，，，，，、。[1],.[J].,2006,37(4):47-49.[2],,.[J].,2003,23(12):19-21.[3],,,.[J].,2010,29(5):11-16.[4],,,.[J].,2008(25):84.[5]《》.[M].4.:,2002.4Tab4Influenceofregenerantreuseonsofterwaterqualityproducedbyresinw/%

Mg(OH)2CaCO31
74.297.2272.467.8
/(mgL-1)/Lm(NaCl)/gCa2+Mg2+ 1.201921381.240ρρ(Ca)/(mg
L)(Mg)/(mg
L)    17767771323132320.0050.007ρρ·41·2013，20（1）ChemicalProductionandTechnologyABSTRACTSproducedbyhydrogenchloridecontainingorganicfluorineKeywords:chlorosulfonicacid;volatileorganiccompounds;headspacegaschromaotographyDeterminationofZincandAluminiumContentinUltrafineZn-AlCompositePowderHaoLiping,MaLan,HuWenjun,JiaJianping,WangLi（NingboInstituteofNorthernMaterialsScienceandEngineering,Ningbo,Zhejiang315103）Abstract:ThispaperstudiedtheseparationtechnologyofultrafineZn-Alcompositepowderslurry,establishedacentrifugalseparationmethodofultrafineZn-AlcompositepowderandOrganicSolerabilityPeservativesinultrafineZn-Alcompositepowderslurry,aswellasthedryingmethodofultrafineZn-Alcompositepowder,thuspreparedcomponentanalysissamples;EstablishedthedeterminationmethodsofZincandAluminiumwhichweremaincompositioninultrafineZn-Alcompositepowdersthroughstudyingthedetectionmethodofthecompositionofthesamples.Keywords:Zn-Alcompositepowder;separation;zinc;aluminium;determinationDangerousChemicalsSafetyInspectionbeforeProductionDaiZhen(JuhuaGroupCorporation,Quzhou,Zhejiang324004)Abstract：Thispaperintroducedamajoraccidentcase,analyzedtheaccidentcause,basedonwhichintroducedthemaincontentofdangerouschemicalsafetyinspectionbeforeproductionandthesafetyinspectiontime,methodsandreportcontent.Processsafetymanagementisakeyelementofsafetymanagementinchemicalindustry,safetyinspectionbeforeproductionisanelementofprocesssafetymanagement.Keywords:dangerouschemicals;production;safetyinspectionExperimentsofIonExchangeSaliferousWastewaterTreatmentbyChemicalPrecipitationWangXiaohui,XuXiao,BuErjun,ZhuWenling(HandanIron&SteelCompany,HebeiIron&SteelGroup,Handan,Hebei056015)Abstract：Arecoverysystemwasaddedintheoriginalionexchangesystemcouldremovemostofthecalciumandmagnesiumioninwastewaterbyfractionalprecipitationtreatment.Clearliquidcouldreuseasregenerantandatthesametimegettwoby-productssuchascalciumsaltandmagnesiumsalt,lowsaltwastewatercouldbereusedasclearwaterbystandingandclarification,testeddifferentinfluenceoftheprocessconditions.TheresultsindicatedthatthehardnessionremovaleffectwasbetterwhenadoptedsodiumhydroxideasmainreagentsoftheprecipitatingagentAinstep1precipitation,afterprecipitationseparationaddedsodiumcarbonateasmainreagentsoftheprecipitatingagentBinstep2precipitation;Softenedwaterproducedbyreusedregenerationagentusedinresintreatmentdidnotdetectthehardnessionsinacertaintime;Themassfractionofcalciumcarbonatewas97.2%whichwashigh,andcouldbesoldaschemicalrawmaterials;Sodiumchloridesuppliedtoconcentratedsaltwastewaterbeforeitsreuseasregenerationagent,andusedhydrochloricacidforneutralizationprocessing.Keywords：ionexchange;saliferouswastewater;recycle;fractionalprecipitation;by-productsTreatmentofSteamStrippingWastewaterContainingSulfurandAmmoniainOilRefiningwithBiologicalSuspendedPackingSunZhihua(SINOPECGuangzhouCompany,Guangzhou510726)Abstract:Steamstrippingwastewat