超声辐照活性污泥法处理焦化废水中COD的研究马晓利

超声辐照-活性污泥法处理焦化废水中COD的研究马晓利1,陈亚雄2,宁　平2,梁　波2(1.新疆师范大学化学系,乌鲁木齐830054;　2.昆明理工大学环境科学与工程学院,昆明650093)　　　:-。-,COD,COD45%81%。、CODCOD。;,,COD;,COD。:;;;:X784;TB559;X703　:A　:1001-0211(2003)suppl-0140-03:(1975-),,,,　　,,[1-2]。,,-(Sonochemistry)[3]。、、、,[4]。。。Larcre,、、、、,[5]。88-1、,。1　超声降解基本原理[6],·OH、·OOH16kHz。1927RichardsLoomis,。,、、、。,5500KMPa[7]。,(·OH·OOH),·OH(H2O2),:H2Oultrasound·OH+·H;O2+·H※·OOH;·OH+·OH※H2O2。H2O2。,:、;、H2O2·OH。2　试验装置1。1-;2-;3-;4-;5-1　Fig.1　Schemeofultrasoundirradiationexperimentalapparatus(,14～20kHz,0～250W,20mm)、55　20033　　　　　　　　　　　　　　　　　　NONFERROUSMETALS　　　　　　　　　　　　　　　　Vol.55,supplement　　March　2003(10cm,60cm,500mL)。,pH8.17,。2～3cm,,(25±0.5)℃。,。,,。3　试验结果与讨论3.1　、-,1。1Table1　ResultofrelativeexperimentCODcr/(mg·L-1)CODcr/(mg·L-1)CODcr/(mg·L-1)CODcr/%0363.15443.8545---65-60.13117.68156.86811,-,COD,,CO2。60.13mg/L;,443.85mg/L156.86mg/L。COD45%81%。,-,,,,。,,(),,,。3.2　3.2.1　COD。—,,COD。COD807mg/L,pH8.17,54W,2。2　CODFig.2　EffectofaerationonCODdegradationincokingeffluentbyultrasound2,。240min,COD27.5%,COD65%,COD4.5%。·OHH2O2,。3.2.2　COD。COD807,19032980mg/L,3pH8.17,。54W240min,COD3。3　CODFig.3　EffectofinitialconcentrationonCODdegradationincokingeffluent3,COD,。54W240min,807,19032980mg/L,COD141　　　　　　　　　　:-COD65%,42%28%。,,。240min,807,19032980mg/L,COD262.28mg,399.63mg417.2mg。·OH。3.2.3　COD。COD807mg/L,0.18W/cm3,0.09W/cm30.054W/cm3,240min,COD4。pH8.17,。4COD,COD。ρ=0.18,0.090.054W/cm3,COD77%,65%52%。,,COD。4　结论(1),-4　CODFig.4　EffectofultrasonicpoweroncokingeffluentCODdegradation,COD。　　(2),,,。。(3)、COD。;,,,COD。,COD,。参考文献[1],.-[J].,1996,16(6):332[2],.[J].,1989,9(6):23[3]　,,　.[J].,1993(5):7[4],,　,.[J].,1994(8):26[5]　.[J].,1992,12(6):3[6]　,,　,.-4-[J].,2000,16(2):1[7]　,.[M].:,1992COKINGEFFLUENTDISPOSALBYULTRASONICIRRADIATION-ACTIVATEDSLUDGEPROCESSMAXiaoli1,CHENYaxiong2,NINGPing2,LIANGBo2(1.ChemicalDepartment,XinjiangNormalUniversity,Urumqi830054,China;2.SchoolofEnvironmentalScienceandEngineering,KunmingUniversityofScienceandTechnology,Kunming650093,China)ABSTRACTTheprocessforthecokingeffluentdisposalbythecombinationofultrasoundirradiationandactivatedsludgeprocessisinvestigated.ThedegradationrateofCODinthecokingeffluentisincreasedcomparedtothatwithactivatedsludgeprocess,thetotaldegradationraterisesto81%from45%.ThedegradationofCODinthecokingeffluentisevidentlyinfluencedbytheaeration,initialCODconcentration,andultrasoundpower.Thedegradationrateisincreasedwiththeincreaseofaeration,ultrasoundpower.However,withthedecreaseoftheinitialCODconcentration,thedegradationoftheCODisincreased,butthequantityofCODeliminationisreduced.KEYWORDS:ultrasound;activatedsludgeprocess;degradation;organicpollutants142　　　　　　　　　　　　　　　　　　　　　　55