//(,710043),,,,////。9520m3/d,COD、BOD5、SS、NH3-N、TN、TP、、、460、140、187、24.3、36.2、3.4、0.04、0.007、0.06mg/L,91.3%、95.0%、98.8%、90.5%、87.8%、94.1%、82.5%、100%、100%,《》(GB18918—2002)A。1.011/m3。;;TU992.3C1000-4602201816-0065-04ApplicationofModifiedMicroAerationOxidationDitch/MicroElectrolysis/FlocculationTechnologyforMetalSmeltingWastewaterTreatmentXIEXiao-jieChinaRailwayFirstSurveyandDesignInstituteGroupCo.Ltd.Xi’an710043ChinaAbstractMetalsmeltingwastewaterwasdifficulttobebiodegradedandcontainedasmallamountofreducedstatemetalions.Soitishardtobetreated.Intheviewofthissituationthecombinedprocessofpretreatment/hydrolysisacidification/modifiedmicroaerationoxidationditch/microelectroly-sis/flocculationtechnologywasusedinthefirststageprojectofanindustrialparkwastewatertreatmentplant.Whentheindustrialparkwastewatertreatmentcapacitywas9520m3/dtheaverageinfluentcon-centrationofCODBOD5SSNH3-NTNTPtotalarsenictotalcadmiumtotalleadwere460mg/L140mg/L187mg/L24.3mg/L36.2mg/L3.4mg/L0.04mg/L0.007mg/L0.06mg/Lrespectively.Andthecorrespondingindexoftotalremovalratewere91.3%95.0%98.8%90.5%87.8%94.1%82.5%100%100%.ThetreatedwastewaterhadreachedthefirstgradeAemissionstandardofDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918-2002.Thedirectoperatingcostofthewastewatertreatmentsystemwas1.011yuan/m3.Keywordsmetalsmeltingwastewatermodifiedmicroaerationoxidationditchmicroelec-trolysis17.34km2。。2015、·56·341620188CHINAWATER&WASTEWATERVol.34No.16Aug.2018。22.11200m3/d10000m3/d30000m3/d。2.2COD、NH3-N、、、。《》GB8978—1996《》GB18918—2002“”。《》GB18918—2002A、1。1、Tab.1Designinfluentandeffluentqualitymg·L-1CODBOD5SSNH3-NTNTP50020020030404.00.10.010.150101058150.50.10.010.12.3。1。COD。。、、。2。。。2.4+++1。。。粗格栅及污水提升泵房细格栅及旋流沉砂池调节池混凝初沉池水解酸化池一体化生物除臭装置一体化生物除臭装置改良型微曝氧化沟二沉池pH调节+微电解池pH回调池+沉淀池消毒池进水鼓风机污泥回流贮泥池污泥脱水机房外运出水计量槽池排放1Fig.1Flowchartofwastewatertreatmentprocess、。、。PAC、PAM。。pHpH·66·3416.watergasheat.com。pHpH。2.5、、、、、、、3.0×104m3/d1.0×104m3/d1.0×104m3/d。2.5.1120m×14m×5.5m5m1.5m3/m2·h1.5h。280m3100mm1m。PAC、PAM15min7m×3m×5.5m。Ⅰ11.0mN=2.2kW65r/minⅡ11.0mN=1.5kW45r/min211Q=25m3/hH=150kPaN=2.2kW。2.5.218h30m×23m×5.5m5m1800m3150mm×3000mm。2.5.3126m×5m×6.0m625m35.0m1.5h252r/min110mmN=1.5kW。26m×11m×6.0m1450m35.0m3.5h242r/min2500mmN=4kW。26m×26m×6.0m3240m35.0m7.8hR=100%442r/min2500mmN=4kW66063mm×1000mm2~12m3/h。2.5.4124m×4.5m2.5m1.0m3/m2·h2.5h1N=0.75kW2Q=50m3/hH=150kPaN=4kW。2.5.5pH、pH124m×1.8m×5.5m5.0m0.5h12000mm×2500mmPP211Q=50L/hH=100kPaN=0.25kWpH1。1Q=1.0×104m3/d46m×4m×5.5m1.5h384m3。2.5.6pHpH18m×5m×5.5m5.0m0.5hNaOH11000mm×1300mmPPNaOH211Q=10L/hH=100kPaN=0.2kWpH。15.6m×5m×5.5m5.0m20minPAM15mg/L0.2%211Q=1.1m3/hH=60kPaN=0.75kW11.0mN=1.5kW45r/min。2.5.7115m×15m×5.5m2m3/m2·h2.5h225m31N=0.75kW2Q=25m3/hH=150kPaN=2.2kW。2.5.8、10.5h5m12.5m×10m×5.5m。10m×1.0m×3.5mQ=4.5~630L/s0.45m。2.5.919m×4.0m5m11.5m/minN=0.75kW。24m×12m×10m211N=4kW、。2.5.10、、。·76·.watergasheat.com://34161Q=5000m3/h6.0m×5.0m×3.0m45m310m3。315411。、、。18500~9800m3/d9520m3/dpH6.3~8.4A。2。2Tab.2Treatmenteffectofeachunitmg·L-1CODBOD5SSTNTP、、46014018724.336.23.40.040.0070.0644613716524.336.23.40.040.0070.063771204923.635.50.70.030.0050.0430110836.623.635.50.70.030.0050.0462814.22.34.40.30.030.0050.046085.32.34.40.260.030.0050.044273.72.34.40.220.0074072.22.34.40.200.007COD、BOD5、SS、NH3-N、TN、TP、、、91.3%、95.0%、98.8%、90.5%、87.8%、94.1%、82.5%、100%、100%。48453。0.361/m30.475/m30.093/m30.045/m30.037/m31.011/m3。5、。///。1.J.2017331066-6873.HouQiaolingWangXingLiXingwuetal.Electrochem-icaltreatmenttechnologyusageinwastewatertreatmentplantinheavymetalindustrialparkJ.ChinaWater&Wastewater2017331066-6873inChinese.2.J.2011373100-104.LuoFashengXuXiaojunLiXinzhengetal.Micro-elec-trolysistreatmentofcoppersmeltingofheavymetalsinwastewaterJ.TechnologyofWaterTreatment2011373100-104inChinese.1986-。E-mail3418802767@qq.com2018-03-08·86·3416.watergasheat.com