简介：Thepaperanalyzestheinfluenceofleadtoxicitybyanaerobicgranulesludgeinhibitionandrecoveringexperiments.Theresultshowsthattherearedifferentinhibitiontypesatdiffer-entleadcontents.Higherleadcontentleadstomoreinhibitiongranularsludge,andatthesametime,thetimeofgasrecoveryisdifferent.Lowerleadcontentpermicroorganismresultsinsoonersludgerecovery.Microorganismshaveagoodabilitytoresistleadtoxicity.

简介：Floodingandanaerobicstressisoneofthestressfactorsaffectingmangroves.Mangrovespecies,differingconsiderablyintheirsusceptibilitytothestress,aredistributedindifferenttidalelevationzones.Growinginregularseawaterdippingandanoxicmud,mangroveshavedevelopedasetofadaptationmechanismsoffloodingandanaerobicstress.Thispaperemphaticallyreviewedfourphysiologicalresponsesofmangrovestofloodingandanaerobicstress,i.e.nutritionallocation,photosynthesisandrespiration,carbonandnitrogenmetabolismandantioxidantmechanism.Finally,itwasproposedthatstudiesshouldbefurtherfocusedonthepathofrootsmetabolism,non-structurecarbohydratesandsecondarymetabolismofthemangrovesunderfloodingandanaerobiccondition.

简介：Thelowremovaleffciencyoftotalnitrogen(TN)isoneofthemaindisadvantagesoftraditionalsinglestagesubsurfaceinfiltrationsystem,whichcombinesananaerobictankandasoilfilterfield.Inthisstudy,afull-scale,two-stageanaerobictankandsoiltrenchsystemwasdesignedandoperatedtoevaluatethefeasibilityandperformancesintreatingsewagefromaschoolcampusforoveraone-yearmonitoringperiod.Therawsewagewaspreparedandfedintothefirstanaerobictankandsecondtankby60%and40%,respectively.Thisnovelprocesscoulddecreasechemicaloxygendemandwiththedichromatemethodby89%-96%,suspendedsolidsby91%-97%,andtotalphosphorusby91%-97%.Thedenitrificationwassatisfactoryinthesecondstagesoiltrench,sotheremovalsofTNaswellasammonianitrogen(NH+4-N)reached68%-75%and96%-99%,respectively.ItappearedthattheremovaleffciencyofTNinthistwo-stageanaerobictankandsoiltrenchsystemwasmoreeffectivethanthatinthesinglestagesoilinfiltrationsystem.Theeffuentmetthedischargestandardforthesewagetreatmentplant(GB18918-2002)ofChina.

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