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28Vol123No.121997[]8500m3/d,,,,[]1()2(),,()11:84m3/d,36m3/d,20m3/d,Q=140m3/d214g/L,315g/L,pH=31041031:,,,,41,,,,,,,40,,Cr(OH)3,,,,151(1)V=140m3();(2):V=0180m3/(m2h);(3)1h,40,215h,();(4):V=012m3/(m2h);(5):4h,50;(6):2d()11Q=50m3/d;=8g/L21,,,,,229Vol.23No.1219971CODCr(mg/L)BOD5(mg/L)SS(mg/L)pH(mg/L)(mg/L)(mg/L)()(mg/L)94131259414126941511830015020069110201158013508990162017324344121020284074420561721428253647033407881238114187111095172010801020103818530118701185010435121284195218515573647MnSO4O2()3100%431(1):20min;(2):50mg/L()()11Q=140m3/d,Q=60m3/d;S2-=4g/L;pH=101321,,,,S2-S331(1)t=315h(2):115()(3):P1S1B280,K=12,Q=50m3/(h)(4):500mg/L,()1,4()5min,120m3,()4ABS,,Q=443m3/h,H=18m,,4,4,,,2(),B=600mm,60,10mm,V110m/s,210m/s,(),,()80%,BOD510%,COD5%,15%,,,,3(),,1mm,6r/min,117L/s,2715Pa,Q=443m3/h()CODBOD51300mg/L2500mg/L,COD910916330Vol123No.1219972500mg/L,BOD51300mg/L,pH,pH3154,pH13,18h,6100m3,,5m,,,,,pH78,24h:(1),,;(2),ABS4,177m3/h,12m(),2h,115m3/(m2h),3m,3mm/s,BOD520%,COD10%,SS60%,4h,40m3,97%ENVIREX,013016m/min,,ABC4,,71216m3/h,14m(),,,,,,,70%,BOD2,0015mg/L,20%,,,BOD5,,1mg/L10%,,,,,2mg/L1215mm,113m,,1215mm,530mm,,1112kg/h150mm,6m,25,,,MLSS(),,5011m,4115m,415m()12068m2,3170m3,3181m34h,BOD501128kg/(MLSSd),BOD50164kg/(m3d),MLSS=5g/L,1915d()520(164,58,38),37kW(55r/min),578kg/h,BOD57213kg/d,NH3N234kg/d,55m3/m3(),,,,,,,,2,,,,,,31Vol.23No.121997(99%),,(ENVIREX)()156214m3;()52018m2;3m;212h1815m,410m5m,413m(ABSAF11024G213)4,,177m3/h,15m]:5106203:199726217[]222:,,,CdHgPbAs;pHSSCODZnCu;[],,,,,,,,,2[1]22,1,,,,,,,pH1013011130,pH,,,,,,,,280350m3/d,13GENETICALGORITHMSFOROPTIMALDESIGNOFECONOMICALWATERDISTRIBUTIONNETWORKSWangWenyuan(22)COMPARATIVESTUDYONGAS2GENERATIONWASTEWATERTREATMENTBYA/OACTIVATEDSLUDGESYSTEMANDBIOFILMSYSTEMWangXiuhengetal(25)Abstract:TheperformancesofbothA/Oactivatedsludgeprocessandbiofilmprocessoperatingsimultaneouslyunderthesameconditiontotreatgas2generationwastewaterwereexaminedandtheresultsshowthatbiofilmprocesshasbettertreatmenteffectandhighercapabilitytoresistshockloading.Forthesamepollutionremovalratethehydraulicreten2tiontime(HRT)ofbiofilmprocessisshorter7.5hourthanthatofA/Oprocessandeasiertomaintain.PROCESSDESIGNOFLEATHERWASTEWATERTREATMENTZouLian(28)Abstract:ThewastewatertreatmentfacilityofRenminLeatherFactoryinGuangzhouhasacapacityof8500cubicmetersperdaywith140m3/dforCr3+contained,200m3/dforS2-containedand50m3/dforgreasecontainedwastewaterinitrespectively.Forthisfa2cilitytheCr3+,S2-andgreasecontainedwastewateristreatedseparatelybeforebeingmixedwithotherwastewaterandtreatedinthemainstructralonoxidationditchofOrbaltype.Thetreatedeffluentmeetstothedesignedrequirement.RESEARCHONTREATMENTOFSULFURICACIDWASTEWATERRenXinguietal(31)Abstract:Anewprocesscomposedofjetaeration2sediment,sludgecirculation,limesedimentationandsulfuricacidreadjustmentwithadvantagesoflowinvestmentandoper2atingexpenseshasproposedinthispaper.ThisprocessiseasytooperateandbestresultsofeffluentthatthecontentsofgroupIpollutantssuchasCd,Hg,PbandAsarelowerthenthatofdischargestandard,andthecontentsofgroupIIpollutantssuchaspH,SS,COD,ZnandCucanmeetthatofthedischargestandardofclasshavebeenobtained.Thecharacteristicsofcompression,sedimentation,filtrationandstabilityforthesettledsludgehavealsobeenimprovedevidently.ONDESIGNOFASHSETTLERWITHINCLINEDTUBULARPACKAGEZhaoYuhuetal(34)Abstract:Themaindesignparametersofaninclinedtubesettertotreatboilerwastewaterforashremovalaredeterminedbyexperimentalandpracticaluse.Theperformanceofthisfa2cilityhasshownthattheresultissatisfactory.TheaveragesofSSandCODCrintheeffluentare200mg/land150mg/lrespectivelytomeettherequirementofwater2bodyclassoftheNationalIntegratedWastewaterDischargeStandardGB8978288.Abstract:Inthiscountryattentionspaidtothebuildinghotwatersystemarebeingtransferringfromlowconsumptionandhighefficiencytosafetyandreliableoperation.TheSAFETYCONTROLOFBUILDINGHOTWATERSYSTEMRuanJichengetal(36)