超声微电解法预处理焦化废水成泽伟

　　　200826-成泽伟　苍大强　唐　卓　宗燕兵(,　100083)　　采用超声-微电解法预处理焦化废水,结果表明,联用处理效果优于超声波法或铁碳微电解法单独处理效果。当反应条件为超声波声功率180W、曝气量1.5L/min、投加铁屑量80g/L、处理时间90min时,COD去除率可达24%,NH3-N的去除率达30%,挥发酚的去除率达32%。　焦化废水　超声　微电解法　曝气PRE-TREATMENTOFCOKINGWASTEWATERBYULTRASONIC-MICROELECTROLYSISMETHODChengZewei　CangDaqiang　TangZhuo　ZongYanbing(SchoolofMetallurgicalandEcologicalEngineering,BeijingUniversityofScience&TechnologyBeijing,100083)Abstract　Theprocessesofultrasonic-microelectrolysiswasusedforpre-treatmentofcokingwastewater.Theresultsshowedthat,theultrasonic-microelectrolysisprocessisbetterthantheultrasonicprocess,aswellasthanthemicroelectrolysisprocess.TheCODremovalratewasupto24%,theNH3-Nremovalratewas30%andthatofthevolatilephenolswas32%,whenultrasonicpowerwas180W,aerationratewas1.5L/min,ironchipsamountwas80g/Landtreatingtimewas120min.Keywords　cokingwastewater　ultrasonic　microelectrolysismethod　aerate0　、,COD,,。:,A-A-O,(SBR),,。、、,[1-2]。,、、、[3]。,Fe/C,,“”,,。,,。1　1.1　试验原料,1。1　mg/L(pH)CODpH3600～4000340～380560～60070～1208.2～9.01～3cm,。10%,2%,。1.2　试验装置1,UG-III(8cm,30cm,1000mL)。,20kHz,0～600W。。1.3　试验步骤,500mL,;,,27DOI:10.13205/j.hjgc.2008.s1.075　　　2008261-;2-;3-;4-;5-;6-;7-。1　;100～200mL,。6,:①:180W,90min;②:1.5L/min,90min;③+:180W,1.5L/min,90min;④+:1.5L/min,80g/L,90min;⑤++:180W,1.5L/min,80g/L,90min。2　2.1　COD去除效果COD2。2,,,COD11.7%。COD。,COD18.0%,。COD,COD6.3%,3,COD24.1%。1-;2-;3-+;4-+;5-++。2　COD2.2　NH3-N去除效果NH3-N3。3,,NH3-N18.2%。NH3-N。,NH3-N24.9%。NH3-N,10.0%。3,NH3-N30.4%。1-;2-;3-+;4-+;5-++。3　NH3-N2.3　挥发酚去除效果,。NH3-N,NH3-N。4。3　3.1　超声波作用3:、、。,28　　　2008261-;2-;3-+;4-+;5-++。4　,,CO2H2O,COD;NH3-N,(NH3·H2O)H2N2,N2O2,;,,。3.2　曝气催化超声波作用。2～4,COD,NH3-N。NH3-N(NH3·H2O)(NH4+),230℃。,,NH3-N。COD,。3.3　微电解法,,·H、Fe2+,。·H、Fe2+,NH4+-N(NH3-N),。·HH2O,Fe2+Fe3+Fe(OH)3,-,。,。,。,,,[4]。O2Fe2+Fe3+,[5]。2～4,,COD、NH3-N,。3.4　超声波-微电解法2～4,,,COD、NH3-N,。,,,,,。,。,,,,,。Fe2+H2O2Fe3+,Fe(OH)3,。4　-,;180W、1.5L/min、80g/L、90min,COD24%,30%,32%。,,。[1],,,..,2007,38(1):64-67[2],,..,2005,15(24):111-113[3],..,2007,(17):16[4],,,..,2007,25(21):43[5],,..,2007,27(6):35　　100083　E-mail:[e-mail]2008-01-2129