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/300191、。COD、SS、TP《》DB12/356—2008。Cl-CaCl270%。X703.1C1000-4602201116-0088-05Two-stageNeutralization/Solid-liquidSeparationMembraneforTreatmentandReuseofAcidPicklingWastewaterfromSteelIndustryXUMiaoFENGHai-junLIUXiao-liangZHANGJin-fengMAYan-ningTianjinAcademyofEnvironmentalSciencesTianjin300191ChinaAbstractSolid-liquidseparationmembraneisanewtypehigh-efficiencytreatmenttechnologyofsolid-liquidseparationreplacingtratitionalcoagulationsedimentationandfiltration.Ithastheadvantagesofgoodeffluentqualitysmallfootprintandlowoperationcost.ThetechnologyisusedfortreatmentofacidpicklingwastewaterfromsteelindustryandtheresultsshowthattheeffluentCODSSandTPmeetthesecondcriteriaspecifiedinTianjinIntegratedWastewaterDischargeStandardDB12/356-2008.MoreoverthroughtheresearchontheaccumulationeffectofCl-andCaCl2concentrationinthereusedwateritisprovedthat70%oftreatedwastewatercanbereusedintheenterpriseproductionline.Goodsocialbenefitandremarkableeconomicbenefitsareobtained.Keywordssteelindustryacidpicklingwastewatersolid-liquidseparationmembranere-use、1。、、、2~6、、、、。。。。①0.002%~10%。②·88·271620118CHINAWATER&WASTEWATERVol.27No.16Aug.2011>99.9%。③0.07~0.1MPa0.035MPa、。④。⑤15%。11.1、、、、、。。300m3/h。《》DB12/356—2008。、1。1、Tab.1DesigninfluentandeffluentqualityCOD/mg·L-1/mg·L-1pHTP/mg·L-1SS/mg·L-1≤300≤1500≥230~35≤300≤60—6~9≤1.0≤201.21。1Fig.1Flowchartofwastewatertreatmentprocess。CaCO3pH4~5pH。。。。。2%~5%pH8.5~9.0Fe2+Fe3+OH-FeOH2FeOH3。FeOH2FeOH3。。。。。。。1.32。2Tab.2Technicalparametersofmembranemodule/μm0.216.5mm×1550mm/mm0.5/m2·-10.72/·-19/m3·m-2·h-10.5EPDMEPDM1.43、4。·98·.watergasheat.com/27163Tab.3Majorstructuresandparameters//m3123514201145018501810194011804Tab.4MajorequipmentparametersQ=150m3/hH=200kPa321Q=250m3/hH=200kPa321Q=30m3/hH=300kPa211Q=70m3/hH=300kPa5Q=500L/hH=500kPa211Q=130m3/hH=100kPa1Q=5~25m3/hH=0.2MPa1Q=2m3/hH=0.3MPa1Q=15m3/hH=0.2MPa3Q=30~300m3/hP=0.3MPa1Q=2.5m3/minP=0.7MPa1Q=1.0m3/minP=0.7MPa1Q=1.0m3/minP=0.7MPa1Qs=10m3/minP=0.05MPa3211~3m3/h1Q=100m3/h211Q=90m3/h2500mm0.4m3/m2·h180m25LWD430BQ=25m3/h1Q=2m3/h1220105pH、COD、SS、TP《》DB12/356—2008。2.1①2。255~232mg/L0.5mg/L。0.2μmFeOH2FeOH3。2Fig.2EffectoftotalFeremovalfromacidpicklingwastewater②CODCOD3。3CODFig.3EffectofCODremovalfromacidpicklingwastewater3COD。COD。COD。COD52~175mg/LCOD60mg/L。③TPTP4。TP。Zn2+TP。。TPTP1.92~15.2mg/L。·09·2716.watergasheat.com/TP0.1mg/LTP>99%TP。4TPFig.4EffectofTPremovalfromacidpicklingwastewater2.2①Cl-。Cl-。Cl-。Cl-。Cl-7。。。FeCl2。Cl-。70%~75%Cl-Cl-。Cl-Cl-2300mg/L。Cl-。。。Cl-。Cl-。②CaCl2Fe2+、Cu2+、Zn2+Cl-、PO3-4。PO3-4。Ca2+CaCl2。。400℃。CaCl2260℃CaCl2。CaCl2。70%~75%CaCl2CaCl2Cl-Ca2+。CaCl24500mg/LCaCl2。70%~75%。1.2m3/t0.36m3/t1~2m3/t。31233、、、。2.007/m30.432/m3、0.082/m3、0.318/m3、0.706/m3、0.469/m3。70%·19·.watergasheat.com/27167.5/m3183.96×104m31379.7527.44/a852.26/a。CaCl2。。4①/、、、、。②7200m3/d《》DB12/356—2008。③2.007/m31.2m3/t0.36m3/t。7.5/m3852.26。1.J.2004640-41.2.J.2009255-58.3.J.199941-42.4.J.2002388-91.5.J.20061107-110.6./J.2009251055-57.7.J.200555-9.13920800467E-mailnavyfhj@sina.com櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵櫵2011-05-17201111、、、、、、。。。。·29·2716.watergasheat.com
本文标题:二级中和固液分离膜技术处理酸洗废水与回用徐淼
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