超临界水氧化法处理苯胺废水漆新华

:,,19773,,。*(No.973606511)。超临界水氧化法处理苯胺废水*漆新华　庄源益　袁有才　杨克莲　谷文新　朱　坦(,　300071)　(SCWO)、、TOC。500℃、25MPaK=1.1,35s,TOC99%。TOC。SCWOTOC。　　　Oxidationofanilineinsupercriticalwater　QiXinhua,ZhuangYuanyi,YuanYoucai,etal.CollegeofEnviron-mentalScience&Engineer,NankaiUniversity,Tianjin300071Abstract:TheoxidationofanilineinsupercriticalwaterindicatedthatthedosageoftheoxidantH2O2,experi-menttemperature,pressureandreactionresidencetimehaveremarkableeffecttotheTOCremoval.Atatempera-tureof500℃,pressureof25MPa,residencetimeof35sandK=1.1,TOCremovalcanachieveover99%.TOCremovalimproveswiththeincreasesofinitialconcentration.TheresultsuggeststhatSCWOisapplicabletotreathighTOCwastewater.Keywords:Supercriticalwater　Oxidation　Aniline　　[1～3](SupercriticalWaterOxida-tion,SCWO),、,CO2[4]。[5]。。,,[6,7]、[8]、[9,10]。。[7],。1　1.1　材料和设备(1000mg/L),30%H2O2。[7]。1.2　试验方法,,H2O2,,。20min,TOC,TOC,TOC(R)。TOCTOC。2　2.1　氧化剂加入量对苯胺TOC去除率的影响[5]N2,SCWO2C6H7N+31H2O212CO2+38H2O+N2H2O2。H2O2(K)。θ450℃,P30MPa,t100s,,1。1,、、,K1.1RK。K1.1,R95%。H2O2,K=2.3,R,。·56·　　23　2　20014DOI:10.15985/j.cnki.1001-3865.2001.02.0041　TOC2.2　温度、压力和停留时间对苯胺TOC去除率的影响　　、。TOC(1000mg/L)H2O2(K=1.1),、。2～4。3　450°C、t-R●25MPa;▲28MPa;□32MPa4　500°C、t-R●25MPa;□28MPa;▲32MPa2.2.1　TOC2～4,,R,。400℃,R,28MPa、15.3s,R34.3%;112s,R58.9%。450℃,R。28MPa、14.1s,R41.4%;118.6s,R99.9%。500℃,R,18s,R98%,。2.2.2　TOC2,400℃,25MPa28MPat-R。32MPa。400℃,R。,,,;,。400℃,,,32MPa,,,2,32MPaR25MPa、28MPa。450℃、500℃,,32MPa450℃500℃。450℃500℃,25、28、32MPat-R(34),(22.1MPa)。2.2.3　TOC5～7,,,R。5,25MPa,400℃,24.3s,R38.6%;450℃,21.9s,R54%;500℃,21.9s,R98.5%。7,R99%,450℃118s,500℃35s。,,,,,,·57·　　,。2.3　苯胺废水起始浓度对TOC去除率的影响TOC,400℃、30MPa、67.2s、K=1.1,TOC,8。8TOCTOC。TOC427.2mg/LR89.9%,TOC4900mg/L,R98.2%。,,TOC,,TOC。8　R3　　(1)。500℃、25MPa、K=1.1,35s,TOC99%。。(2),H2O2K=1.1。(3),,,TOC,。(4),,,TOC。(5),TOC,,TOC。(6),TOCTOC,。。　1　GloynaEF,LiL,McbrayerRN.Engineeringaspectsofsu-percriticalwateroxidation.Wat.Sci.Tech.,1994,3(9):1～10　2　　,,.——.,1995,(3):6～7　3　BannerHE,HuangCY,JohnsonT,etal.Supercriticalwa-teroxidation:Anemergingtechnology.J.Hazard.Mater,1992,31:1～17　4　LiR,ThorntonTD,SavagePE.KineticsofCO2formationfromtheoxidationofphenolsinsupercriticalwater.Environ.Sci.Technol,1992,26:2388　5　KillileaWR,SwallowKC,HongGT.Thefateofnitrogeninsupercriticalwateroxidation.J.Supercrit.Fluids,1992,5:72～78　6　ZhangX,SavagePE.FastcatalyticoxidationofPhenolinsu-percriticalwater.CatalysisToday,1998,40(4):333～342　7　　,,.TOC.,1999,12(4):1～3　8　,　,　..,1999,(19)2:75～79　9　ShanablehA,GloynaEF.Supercriticalwateroxidation-wastewaterandsludge.Wat.Sci.Tech.,1991,23:89～198　10　EPA.SupercriticalWaterOxidation.EPA/540/S-92/006,1992,1～7(:2000-07-20)·58·　　23　2　20014