超声空化效应降解焦化废水中有机物的研究徐金球

183No.3Vol.1820046JournalofChemicalEngineeringofChineseUniversitiesJune20041003-9015(2004)03-0344-071,1,2,2(1.,200240;2.,650093)(CODCr)pHOH;X784;X703A1BOD5CODCr(GB8978-96)NH3-N15mg⋅L-1CODCr100mg⋅L-1NH3-NCODCrCODCrNH3-N[1]Fenton--[2,3]22.1CODCr3369.6mg⋅L-1NH3-N521.46mg⋅L-1549.3mg⋅L-1CN-31.77mg⋅L-1pH8.17()()()2003-06-01;2003-12-18(2001E0019M)(1965-)E-mail:[e-mail]1833452CODCrFig.2TheefficiencyofultrasonicdecompositionofCODCrversustimebyultrasound,aerationofairandtheircombinationbyultrasoundalonebyaerationofairalonebyultrasound+aerationofair060120180240010203040506070Decompositionefficiency/%Time/min231SampleCoolingWater4CoolingWaterCoolingWaterCoolingWaterCoolingWaterCoolingWater56CoolingwaterCoolingwaterCoolingwaterCoolingwaterCoolingwaterSampleCoolingwater2341Fig.1Schemeoftheexperimentalapparatus1.ultrsonicgenerator2.ultrasonicconvertor3.ultrasonicprobe4.flaskwithsteady-statetemperature5.aerator6.analysissystem()()70%2.2188-1()(8.5cm14cm600mL)14~20kHz0~250W20mm1~3cm250.5500mL18kHz12.0W⋅cm-2,pHCODCrpHCODCrCODCr[4]33.1(CODCr)(CODCr)pH3.1.1[5][6~9][6~8][8]34620046()()(CODCr)CODCr807mg⋅L-1pH8.17500mL240min0.110W⋅cm-322240minCODCr4.54%27.50%64.78%CODCr37.5%CODCr4.54%(CODCr)3.1.2(CODCr)CODCr807mg⋅L-11903mg⋅L-12980mg⋅L-1500mLpH8.170.110W⋅cm-3240min(CODCr)(CODCr)11CODCr807mg⋅L-11903mg⋅L-12980mg⋅L-1240minCODCr64.78%42.16%28.21%(CODCr)240minCODCr261.38mg401.15mg420.33mg(CODCr)1CODCrTable1TheefficiencyofultrasonicdecompositionofCODCratdifferentCODCrinitialconcentrationsC0=807mg⋅L-1C0=1903mg⋅L-1C0=2980mg⋅L-1Sonicationtime/minConcentration/mg⋅L-1Decompositionefficiency/%Concentration/mg⋅L-1Decompositionefficiency/%Concentration/mg⋅L-1Decompositionefficiency/%0807.000.001903.000.002980.000.0060602.5125.341645.7113.522722.538.64120442.5645.161400.8026.392486.2116.57180318.5260.531151.7039.482222.1925.43240284.2364.781100.7042.162139.3428.213.1.3CODCr807mg⋅L-1pH8.17500mL0.220W⋅cm-30.110W⋅cm-30.055W⋅cm-30W⋅cm-3240min(CODCr)330.220W⋅cm-30.110W⋅cm-30.055W⋅cm-30W⋅cm-3240minCODCr76.89%64.78%52.19%4.54%(CODCr)(CODCr)06012018024001020304050607080Decompositionefficiency/%Time/min3CODCrFig.3TheefficiencyofultrasonicdecompositionofCODCrversussonicationtimeatdifferentultrasonicenergydensitiesr=0W⋅cm-3r=0.055W⋅cm-3r=0.110W⋅cm-3r=0.220W⋅cm-31833473.1.4pHCODCr807mg⋅L-1500mLpH3.186.058.1711.000.110W⋅cm-3240minpH(CODCr)44pH3.186.058.1711.00240minCODCr25.40%62.40%64.78%34.06%pH(CODCr)pH(pH=6.01~8.17)(CODCr)(pH=3.18)(pH=11.00)pH(CODCr)3.1.5(40%)(CODCr)CODCr807mg⋅L-1pH8.17500mL253852600.110W⋅cm-3240min(CODCr)22CODCrTable2TheefficiencyofultrasonicdecompositionofCODCratdifferenttemperaturesTemperature25Temperature38Temperature52Temperature60Sonicationtime/minConcentration/mg⋅L-1Decompositionefficiency/%Concentration/mg⋅L-1Decompositionefficiency/%Concentration/mg⋅L-1Decompositionefficiency/%Concentration/mg⋅L-1Decompositionefficiency/%0807.000.00807.000.00807.000.00807.000.0060602.5125.34607.2724.75609.2924.50611.3024.25120442.5645.16447.4844.55451.0344.11454.6643.66180318.5260.53323.6159.90328.5359.29333.3758.69240284.2364.78287.7064.35292.7863.72298.2763.04225385260240minCODCr64.78%64.35%63.72%63.04%(CODCr)3.2-(GC-MS)CODCr807mg⋅L-1pH8.170.110W⋅cm-3240min-5656240min06012018024001020304050607080Decompositionefficiency/%Time/min4pHCODCrFig.4TheefficiencyofultrasonicdecompositionofCODCrversussonicationtimeatdifferentinitialpHvaluespH=3.18pH=6.05pH=8.17pH=11.0034820046RT:0.00-68.0805101520253035404550556065Time(min)0102030405060708090100RelativeAbundanceNL:5.53E7TICMS20020531-053.33.3.115kHz~1MHz[10]ns~μsSuslick550050~100MPa[10]OHOOHHH2O2H2[11]OHTime/min5-Fig.5TheGC-MSanalyticaldiagramoftheinitialcokeplantwastewaterbeforeultrasonictreatmentRT:0.00-68.0105101520253035404550556065Time(min)0102030405060708090100RelativeAbundanceNL:5.67E7TICMS20020531-06_020531162423Time/min6-Fig.6TheGC-MSanalyticaldiagramofthecokeplantwastewatertreatedbyultrasonicirradiationRelativeabundanceRelativeabundance183349060120180240010203040506070Decompositionefficiency/%Time/min7CODCrFig.7TheefficiencyofultrasonicdecompositionofCODCrversussonicationtimeatdifferentconsumptionsofn-butylalcoholn-butylalcohol0.0mmol⋅L-1n-butylalcohol1.0mmol⋅L-1n-butylalcohol5.0mmol⋅L-106012018024056789lnCTime/min8CODCrFig.8Thepseudofirst-orderreactioncurveofCODCrultrasonicdecompositionC=807mg⋅L-1R2=0.9831C=1903mg⋅L-1R2=0.973C=2980mg⋅L-1R2=0.99663.3.2(CODCr)·OH(CODCr)CODCr807mg⋅L-1pH8.17500mL,0.0mmol⋅L-11.0mmol⋅L-15.0mmol⋅L-10.110W·cm-3240minCODCrCODCrCODCrCODCrCODCr(CODCr)770.0mmol⋅L-11.0mmol⋅L-15.0mmol⋅L-1CODCr64.78%24.39%7.32%CODCr(CODCr)OH3.3.3(CODCr)K1CODCr807mg⋅L-11903mg⋅L-12980mg⋅L-10.110W·cm-31C-tlnC-t1/C-tlnC-t88lnC-t0.98310.97300.9966(CODCr)84.60×10-3min-12.40×10-3min-11.40×10-3min-1CODCr(CODCr)K8CODCr(CODCr)807mg⋅L-1C=785.95e-0.0046t1903mg⋅L-1C=1885.60e-0.0024t2980mg⋅L-1C=2975.00e-0.0014t350200464(1)pH(CODCr),CODCr807mg⋅L-1pH8.17250.220W⋅cm-3240min,CODCr76.89%(2)OH[1]YANGYun-long(),BAIXiao-ping().Treatmenttechnologyandprogressofcokeplantwastewater()[J].IndustrialSupplyWater