集约化猪场粪污处理工艺的研究_英文_李长生

第17卷第1期2001年1月农业工程学报TransactionsoftheCSAEVol.17No.1Jan.2001ArticleID:1002-6819(2001)01-0086-05TechnologyofSwineManureTreatmentonIntensiveScaledSwineFarmsLiChangsheng,WangYingkuan(ChineseAcademyofAgriculturalEngineering,Beijing100026,China)Abstract:Inaccordancewiththecharacteristicsofswinemanure-dischargingwayandthepropertyofswinewastewateronintensivescaledswinefarmsinChina,anewtechnologyofswinewastewatertreatmentandswinemanurefermentationtoproduceorganicfertilizerwaspresented.Thistechnologyincludescleaningmanurebymanpower,solid-liquidseparator+sedimentationbasin+Upper-flowAnaerobicSewageBed(UASB)+SBR+aquaticplantpond.TheprojectpracticeofswinewastewatertreatmentinShanghaiJiadingBreederFarmshowedthatthenewtechnologycouldsave35%oftheprojectinvestment,65%oftheoperatingelectricitychargeswithgooddirecteconomicbenefit,onconditionofguaranteeingtheprerequisitesthatthedischargedswinewastewaterreachedthestatestandardall-sidedlyandswinemanurewaspollutionlesslytreated.Keywords:swinemanuretreatment;solid-liquidseparation;sedimentation;anaerobicdigester;aerobicdigester;pilefermentationCLCnumber:X713Documentcode:AReceiveddate:2000-11-13Biographies:LiChangsheng(1941-),male,professor;WangYingkuan(1971-),male,M.Sc,engineer.Now,theswinemanureofmostlarge-scaleswinefarmsinChinaisnoteffectivelytreated,whichseriouslypollutedsurroundingenvironmen-ts.Thissituationhasnotonlyrestrictedthesustainabledevelopmentofagriculture,butalsodoneharmtothehealthofpeople.Itishightimethattheswinemanureandwastewatershouldbetreatedcomprehensivelybeforedischargingintoenvironment.1ThePresentSituationofSwineManureTreatmentonLarge-ScaleSwineFarminChinaAtpresent,therearemainlythefollowingwaysofswinemanuretreatment.1.1CleaningAwaySwineManurebyManpowerSwinemanureiscleanedawaybymanpoweronmostsmallswinefarmsinChina,amongwhichlargepartsoffreshmanureareappliedinfarmlandasfertilizer,andswinewastewateriscarriedintoswinewasteslurrydigestersforsimpletreatment.TheCODofthedischargedslurryinthiswayisabout4500mg/Landseriouslyexc