反冲洗对饮用水生物活性滤池生物量的影响乔铁军

　乔铁军　张晓健　于　鑫　　　研究了反冲洗对生物活性滤池生物量的影响。试验结果表明,生物活性滤池中的微生物系统能够抵抗反冲洗时的水动力和氯灭活作用的共同冲击。反冲洗过程中,所损失生物量主要是以悬浮状态存在的,这些生物量在反冲洗后的过滤过程中会逐渐恢复,并能恢复到反冲洗前的水平。反冲洗对亚硝化细菌和硝化细菌的数量均造成了明显的影响。　饮用水　生物活性滤池　反冲洗　生物量16　　　　Vol.28　No.11　2002DOI:10.13789/j.cnki.wwe1964.2002.11.005　Vol.28　No.11　200217　　　18　　　　Vol.28　No.11　2002　Vol.28　No.11　200219　　　20　　　　Vol.28　No.11　2002WATER&WASTEWATERENGINEERINGVol.28No.11November2002ABSTRACTSInfluencingFactorsonAmmoniaRemovalinBiologicalPre-TreatmentofSlightlyPollutedRawWaterZhangWenyanetal(1)……………………………………………………………………………………………………Abstract:TheinfluencingfactorsonNH3-Nremovalsuchasthetemperature,DOlevel,hydraulicloadingandammoniaconcentrationinbiologicalpre-treatmentsystemofslightlypollutedrawwaterwereinvestigatedinapilotplantexperiment.Ozone-Zeolite-GACProcess:PurificationofSlightly-PollutedRawWaterofGrandCanalinChangzhouZhangYuxianetal(3)……………………………………………………………………………………………………Abstract:Onthebasisofexperimentalresearch,anadvancedpurificationfacilityofozone-zeolite-GACprocesswithcapacityof340thousandcubicmetersperdaywasdesignedtotreattheslightlypollutedrawwatertakenfromChangzhousectionoftheGrandCanal.Thisprojecthasbeenconstructedonspecificinvestmentof220RMBpercubicmeterperdayandhasbeenputintooperationoveroneyearwithspecificoperatingcostof0.163RMBpercubicmeterofoutputwater.Fairremovalsof50%ormore,30%～40%and70%～80%forAmmonianitrogen,CODMnandnitriterespectivelyhavebeenobtained.ApplicationofPhoStripProcessforPRemovalNiuXueyi(8)…………………………………………………………………Abstract:Inthispaper,thecharactersandmechanismofPhoStripprocessarediscussed,andanapplicationexam-pleinawastewatertreatmentplantisincluded.Thereliability,P/Nremovalefficiency,sludgetreatment,operationcost,advantagesoftheprocessarepresented.EffectofBackwashingonBiomassinBiologicalActiveFilterofDrinkingWaterQiaoTiejunetal(16)……………………Abstract:Impactofbackwashingonbiomassgrowthinbiologicalactivefilterwasresearched.Theresultshaveshownthatthemicroorganismshavetheabilitytoresistthesynergisticimpactofhydrodynamicandchlorinechemicalactions.Duringthebackwashing,thelosingbiomasswasmainlyinsuspension.Duringthenextfiltrationcycle,itwouldregrowandrecovertoitspre-backwashingconcentration.Backwashingimpactedgreatlyontheamountofnitrosobacteriaandnitrobacteria.ExperimentalResearchonDomesticWastewaterTreatmentbyBiologicalReactorComposedofBiofilmandMembraneBioreactor(MBR)ProcessesHeShengbingetal(21)……………………………………………………Abstract:Domesticwastewaterwastreatedbycombinedbiofilm-membranebioreactor(MBR)processandtheex-perimentalresultsshowedthatthemeanremovalefficienciesforCOD,NH3-NandTNwere92.82%,93.04%and88.93%respectivelywhenecologicalfactorssuchasDOandpHweremaintainedinsuitableranges.Meantime,thesystemobtainedanexcesssludgeyieldof0.156gSS/gCODremoved.Alsotheinvestigationoffluxofmembraneperme-atewascarriedoutandthemeasuresforlesseningmembranefoulingwereputforward.NewConceptsinUrbanSewerageSystemZhangJieetal(24)…………………………………………………………………Abstract:Nowadays,whensewagefurthertreatmentandsuperadvancedtreatmenttechnologyhasbecomemoreapplicable,urbanwastewatershouldbereconsideredasvaluablefreshwaterresourcewhilstproceedinggeneralcityplanandwatersupplyandseweragesystemplan.Sewagefurthertreatmentandreuseshouldberaisedtotheutmostimpor-tantplace.Properlyallocateanddeterminethepositionandnumberofsewerageareasandsewagetreatmentplantssoastoavoidintensivedeploymentofthesefacilitiesinthelowerreachesarea.Whenbuildinganewsewagetreatmentplantorrebuildinganoldone,itisnecessarytoselectaneconomicandapplicableseweragesystemanddevelopreuseofwastewater.Meanwhilethesludgeshouldbeusedasvaluableorganicmuckforfarmstoo.UrbanWaterPollutionControlPlaninGuangzhouCityTangLiangetal(27)………………………………………………Abstract:TheproblemsoffarraginousflowofclearandcontaminatedstreamsandcrossinfectionofpollutionacrossthedistrictsareveryprominentinthewaterenvironmentinGuangzhouCity.Thetreatmentofurbantail-waterwillbeessentialtoprotectthesafetyofdrinkingwater.Anurbanwaterpollutioncontrolplancalledtri-stagecontrolsandtwo-stagediversionsheadedbystrategicdiversionofurbantail-waterhasbeenestablished.Thisisanoverallprograminvolv-ingpollutionsourcescontrol,centralizedwastewatertreatmentanddisposaloftail-water.MathematicalModelofPrimaryPumpingStationinShuanggangWaterworks,NanchangCityJiangLiwenetal(40)……Abstract:Onthebasisofmeasureddataonwaterpressureandflowoftheprimarypumpingstationweconstructed