不锈钢酸洗废液的回收和处理技术柳雨

20116315807。。。doi10．3969/j．issn．1672－9587．2011．06．005RecoveryandtreatmenttechnologyofwasteliquidfromstainlesssteelpicklingprocessLIUYuNingboBaoXinStainlessSteelCo．Ltd．Ningbo315807ZhejiangChinaAbstractUsingnitricacidHNO3andhydrogenfluorideacidHFassteelpicklingmediumcangeneratealargequantityofwasteliquidwhichnotonlyseriouslypollutestheenvironmentbutalsowastestheresourceifitisemitteddirectlytotheatmosphere．Thisarticledescribesthegenerationmechanismofwasteliquidfromstainlesssteelpicklingprocessandtheregenerationprocessofvarioustypesofacid．Thedomesticresearchworksandsomeachievementsinreuseandtreatmenttechnologyofwastepicklingliquidinrecentyearshavebeenreviewedandanalyzed．Accordingtothecharacteristicsofstainlesssteelpicklingprocessthearticlepresentsitisnecessarytodevelopthenewtreatmenttechniquesforreusableandinnoxiouspicklingwasteliquid．Meanwhilethecombinationofacidregenerationandwasteliquidtreatmentprocesssuitableforstainlesssteelproductionisintroduced．Keywordsstainlesssteelwastepicklingliquidacidliquidregenerationwasteliquidtreatmentprocess0。。。。。、。11～3mol/L0．5～2mol/L。300400。、、·83·、。、、1。。Me+4HNO3=MeNO33+NO+2H2O1MeNO33+3HF=MeF3+3HNO32Me+HNO3+3HF=MeF3+NO+2H2O3Me。。、。。、10%。2。2．12．1．1APU1。1APU20%～25%5%。、。。97%92%。75%。APU。23。2．1．2、85%～90%2。2。、。90%80%。95%。2。2．1．3、、3。、、·93·20116。。4。、93%～96%。。32．2。2．2．1PYROMARS、、、4。4、HFHNO3NOxNOx。30%～50%、85%～125%。。11．3290%34。1·04·23。2．2．25。5。。HF。HF。、CLEANOX。。3。3．1pH。pH、pH。6。6120079．67/m32320078．58300/t。3．22000、、。1pH10．52pHpH34pH9．5。。NaOH、。7。·14·20116712、、50%。1200～5000mg/L10mg/L2。。pH6。。。8。、1283。。4。。。、、。1．J．2004525－31．2．J．200418327－30．3．J．200628437－38．4．J．2004263227－228．·24·