PSA絮凝剂和粉煤灰基混凝剂处理制革废水

PSA101601PSA.HBFACCODSS1534764mg/LHBFAC..PSA.X773A1000-1565200303-0265-04PSM.1~5...67.PSA.11.1722DBJ-621pHS-3C.PSA6.5pH2~32X1051.10g/L10g/L.1.21.2002-11-231955-!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.23320039JOIrnaIOfHebeiUniversityNatIraIScienceEditiOnVOI.23NO.3Sep.20031Tab.1Resultsofrawwatergualityanalysis!COD/mgL-1!SS/mgL-1!/mg.L-1!/mgL-1pH170095035249.01.3HBFA2.2Tab.2Chemicalcompositionofflyash!/%SiO2Al2O3Fe2O3CaOMgOC55.7321.6112.082.621.514.231.4100gHBFA10gHS400mL250mL3mol/LH2SO421.HBFAC.1.5~1.6g/cm3pH1~220~30g/L10~20g/L.1.5DBJ-62161000mL600mL250I/min2min.100I/min5minPSA150I/min1min60I/min8min25mm.21Fig.1Effectoftreatmentoftanningwastewaterwithflocculant2.1HBFAC1.13PSA.HBFAC.HBFAC.SS3SS.Fe3+.Fe3+Fe3+S2-Fe2S3Fe3+Al3+PSA.CODHBFAC.CODHBFAC.2HBFAC662!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2003HBFAC.HBFAC.PSAAl3+HBFACPSA.2.22Fig.2Relationshipbetweensubsidetimeandheightofsupernatantdifferentcoagulants500mLHBFACPSA500mL2.16minmmmm3.3PSAHBFAC16min.HBFAC.16minHBFAC.2.33HBFAC150~160/tAl2SO43900~1000/tFeCl32200~2400/tPSA200/t.HBFAC0.4~0.5/tAl2SO430.9~1.0/tFeCl30.8~0.9/t.HBFAC.33/Tab.3Comparisonofliguidtosolidafter3mixturestransaction/HBFAC226/24201/49192/583HBFACHBFAC.Fe3+Al3+SO2-4Fe2+Ca2+Mg2+HBFAC1HBFACFe3+Al3+Zeta.8~9.2HBFAC..3PSAAl3+..762!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!3PSA4HBFAHBFACPSASSCOD.HBFAC..PSA[e-mail].20023197-9.7.J.200114245-47.8.J.199511446-49.9.J.1997172154-159.TreatmentofTanningWastewaterwithPSAFlocculantandFlyash-basedCoagulantWANGXu-liangDepartmentofSafetyandEnvironmentEngineeringNorthChinaInstituteofScienceandTechnoiogyBeijing101601ChinaAbstractThetanningwastewatertreatedbyafiyash-basedcoaguiantandpoiysiiicateaiuminumPSAfioccuianthasbeenresearched.TheresuitsshowthatthemagnitudesofCODSSsuifurandchromeinthewastewaterafterHBFACtreatmentare153476and4mg/Landthewaterguaiityreachthestandardoftwograde.ItisprovedthatHBFACisanexceiientinorganicfioccuiant.Theremarkabiecharacteristicsofthismethodisahigherrateofsettiementasmaiiervoiumeofsiudgeandaiowercostoftreatment.Thecoaguiationmechanismoffiyash-basedcoaguiantandPSAfioccu-iantinthetreatmentoftanningwastewaterhasaisobeendiscussedinthispaper.Keywordspoiysiiicateaiuminumfiyashtanningwastewaterinorganicfioccuiant862!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2003