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1、实验室废液处理方法（Laboratorywasteliquidtreatmentmethod）[Topic]laboratorywasteliquidtreatmentmethodLaboratorywasteliquidtreatmentmethod1.wastewatertreatmentprinciple:forthehighconcentrationofwasteacidandwastelyeemissionsbyneutralizedwhen.Highconcentrationsoforganicsolventscontainingasmall
2、amountofanalytesandotherreagentsshouldbereused.Forhighconcentrationwasterecyclingshouldbeconcentratedandstoredforrecycling;lowconcentrationaftertreatmentdischarge,storagecontainersandstorageconditionsshouldbedeterminedaccordingtothedifferentnatureofwastewater,wastegenerallydoesno
3、tallowmixing,avoidlight,farawayfromheat,soastoavoidtheadversereaction.Liquidwastecontainersmustbelabeledwithtype,storagetime,etc..2.treatmentmethods:Thewasteliquidcontainingmercury,chromium,lead,cadmium,arsenic,phenolandcyanidemustbetreatedanddischargedbeforereachingthestandard.T
4、helaboratorytreatmentmethodsareasfollows:2.1disposalofmercurycontainingwasteIfyouarenotcarefultoscattermetalmercuryinthelaboratory(suchasbreakingthethermometer),youmustclearitintime.Aswithadropperorusedinacidicsolutionofmercuricnitratehadbeendippedinthincopper,copperwirecollectio
5、nandbeakercoveredwithwater.Mercurygranuleswerescatteredonthegroundshouldbesprinkledwithsulfurpowder,generatinglesstoxicmercuricsulfide;orsprayedwithhydrochloricacidsolutionofPotassiumPermanganate(5:1000volume),1to2hoursafterremoval;orsprayedwith20%ferricchlorideaqueoussolution,dr
6、yandthenremoved(butthismethodcannotbeusedformetalsurface.Willcausecorrosion).Forthetreatmentofmercurycontainingwastewater,wastecanbetransferredtoPH8~10intoexcesssodiumsulfide,theformationofmercuricsulfideprecipitation,addingferroussulfateasprecipitant,formationofironsulfideprecip
7、itatescanbemercuricsulfideparticleadsorptionprecipitation,andthenstaticseparation,liquiddischarge,madeavailableroastingresiduerecyclingofmercuryormercurysalt.2.2leadandcadmiumWithalkaliwastetogeneratePbPH8~10(OH)2andCd(OH)2precipitate,addingferroussulfateasprecipitantprecipitatec
8、anbemixedwithotherinorganicsinteringproc
