隔油共沉淀Fenton预处理制药废水高林霞

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   200826--Fenton高林霞 皮科武 万端极(1.,  430068)  采用隔油-共沉淀-Fenton法对含有大量的苯、甲苯、铝及苯甲酮的制药废水进行处理。经隔油处理,COD由147490.8mg/L降至139518.4mg/L,后通过调节pH值来去除大部分的铝离子,pH=7时效果最佳,COD大约降至10000mg/L。Fenton最佳氧化条件为:pH为7,H2O2的投加量为1.6g/L,H2O2和Fe2+的投加量比为14,反应去除时间为5h,在此条件下COD降为840mg/L,去除效率为91.6%;Fenton氧化预处理后废水的可生化性也得到较大提高。 隔油 共沉淀Fenton制药废水RESEARCHONPRETREATMENTOFPHARMACEUTICALWASTEWATERBYSCRAPINGGREASE-COMMONPRECIPITATION-FENTONGaoLinxin1 Pikewu WanDuanji(SchoolofChemistryandEnvironmentalEngineering,HubeiUniversityofTechnology,Wuhan 430068)Abstract Thescrapinggrease-commonprecipitation-Fentonwasusedtohandlepharmaceuticalwastewatercontainingalotofbenzene,toluene,aluminumandbenzophenone.CODwasdownfrom147490.8mg/Lto139518.4mg/Lbythescrapinggrease.ByadjustingthepH,mostofthealuminumionwasremoved.WhenthepHwas7,theremovaleffectwasthebestandCODwasdroppedtoabout10000mg/L.Thebestoperat-ingconditionsdeterminedareasfollows:thepHwas7,H2O2dosagewas1.6g/L,theproportionof[H2O2]and[Fe2+]was14,thereactiontimeshouldlastfor5h.AfterthetreatmentofpharmaceuticalwastewaterbyFentonreagent,theCODwasdownto840mg/Landtheremovalratewasupto91.6%.AlsothevalueofB/Cwasgreatlyimproved.Keywords scrapinggrease  commonprecipitation Fenton pharmaceuticalwastewater0 ,4000[1],。,CODmg/L,,,,,,。()。,[2],。,--Fenton[3-4]。1 1.1 废水来源及水质,、、,COD150000mg/L,BOD38000mg/L,pH=2,BOD5/COD0.25,106.4g/L。1.2 实验方法1.2.1 ,、,COD147490.8mg/L139518.4mg/L。1.2.2 (30%)pH,pH7。106.4g/L,pH,COD10000mg/L,15mg/L。pH,。1.2.3 FentonFenton4112DOI:10.13205/j.hjgc.2008.s1.014   200826[5]:pH、[H2O2]、[H2O2]/[Fe2+]。,。2 2.1 单因素实验2.1.1 H2O2H2O2COD1。1 H2O2COD1,H2O2,COD,H2O21.6g/L,COD。H2O2,·OH,H2O2,·OH,,·OH,:·OH+H2O2※H2O+HO2·,ρ(COD)=10000mg/L、pH=7、ρ(Fe2+)=267mg/L,H2O21.6g/L,COD96.01%,。2.1.2 H2O2/Fe2+2H2O2/Fe2+COD2 ρ(H2O2)/ρ(Fe2+)COD  2,ρ(H2O2)/ρ(Fe2+),COD,ρ(H2O2)/ρ(Fe2+)14,COD。ρ(H2O2)/ρ(Fe2+),H2O2,·OH,·OH,。ρ(H2O2)/ρ(Fe2+),Fe2+,·OH,,。COD=10000mg/L、pH=7、ρ(H2O2)=1.6g/L,ρ(H2O2)/ρ(Fe2+)=14COD(95.02%)。2.1.3 pHpHCOD3。3 pHCOD3,pH,COD,pH7,COD。pH,,pH,,H2O2:OH-+H2O2※H2O,H2O2,COD。COD=10000mg/L、ρ(H2O2)/ρ(Fe2+)=14、ρ(H2O2)=1.6g/L、pH=7,COD(94.02%)。2.1.4 COD4。4 COD  4,,COD,6h,COD。COD=10000mg/L、ρ(H2O2)/ρ(Fe2+)=14、ρ(H2O2)=1.6g/L、pH=7、113   2008266h,COD。2.2 正交实验2.2.1 ,Fenton,H2O2、H2O2/Fe2+、pHFenton。,H2O2、H2O2/Fe2+、pH43,4,。1 ρ(H2O2)/(g·L-1)ρ(H2O2)/ρ(Fe2+)pH/hCOD/%11.4136577.0821.4147675.5831.4158778.5741.6137790.5351.6148589.0461.6156687.5471.8138680.0781.8146770.6091.8157579.07K177.07782.56078.40781.730K289.03778.40781.72781.063K376.58081.72781.56079.900R12.4574.1534.1531.8302.2.2 ,ρ(H2O2)FentonCOD,H2O2/Fe2+pH,。K1、K2、K3ρ(H2O2)=1.6g/L,ρ(H2O2)/ρ(Fe2+)=13,pH=7,=5h,A2B1C2D1。COD840mg/L,91.6%。3 FentonCOD:ρ(H2O2)=1.6g/L,ρ(H2O2)/ρ(Fe2+)=13,pH=7,=5h,COD840mg/L,91.6%,BOD305mg/L,99.2%,BOD5/COD0.250.35。,。[1],,,.Fenton.,2004,24(12):9-13[2],,.Fenton.,2003,25(10):18-20[3],.Fenton.,2006,7(6):60-64[4],,,.Fenton/.,2006,27(11):2201-2205[5],,,.Fenton.,2008,47(2):110-117  430068  E-mail ncugao@yeah.net2008-07-21(106)  ,。4。4 /(m3·a-1)COD/(t·a-1)SS(t·a-1)28.815649.6()28.87.89.1148.240.53 (1)“++”,COD、SS、95%、81.6%、90%。《》(GB4287-92)3Ⅰ。(2)、,,,。[1],..:,1995[2]..:,2000.7  071051 139 (0312)5905368E-mail baodinghuanbao@163.com2008-07-14114

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