不同工况蚯蚓人工湿地表层污泥处理效果董梦珂

38320173ENVIＲONMENTALSCIENCEVol．38No．3Mar．2017*20009248、65、80kg·m2·a－1、0、0.43、0.54、0.65kg·m－2．10mmdehydrogenaseactivityDHAVS15%10%0.65kg·m－2．．X705A0250-3301201703-1159-08DOI10．13227/j．hjkx．2016092122016-09-262016-11-082013ZX07312-001-0051992～[e-mail]*[e-mail]hwormConstructedWetlandsinDifferentWorkingConditionsDONGMeng-keLIHuai-zheng*XUYi-xiaoCollegeofEnvironmentalScienceandEngineeringTongjiUniversityShanghai200092ChinaAbstractThefeasibilityofanewsludgetreatmenttechnologyofearthwormconstructedwetlandswastestedbyaddingearthwormintothetraditionalsludgedyingreedbeds．Thedewateringandstabilizationeffectsoftheupperlayersludgeweretestedunderdifferentsludgeloadingratesof486580kg·m2·a－1differentearthwormstockingdensitiesof00.430.540.65kg·m－2anddifferentsludgeloadingfrequencies．Theresultsindicatedthatitwasfeasibletoprovideashelterforearthwormduringtheloadingperiodbysettingadamperwithaburieddepthof10mm．TheadditionofearthwormcouldeffectivelyimprovethedewateringandstabilizationeffectsofearthwormconstructedwetlandsbyloweringtheDHAanddecreasingthemoisturecontentandVSofsludgeby15%and10%respectively．Thestabilizationeffectsofearthwormconstructedwetlandsreachedthebestunderthestockingdensityof0.65kg·m－2．Withtheincreaseofsludgeloadingrateanddecreaseofloadingfrequencytherunningefficiencyofearthwormconstructedwetlandswouldbeworse．Keywordsconstructedwetlandssludgedyingreedbedsearthwormsludgedewateringsludgestabilization．、1．2．3、、、、45．3067．．89．．．3811.1××200mm×100mm×400mm．0.5～2mm10cm．．．5cm1．．．1A-AFig．1PlanegraphandA-Aprofilesofexperimentaldevice1.2《》、．pH6.799.2%VS%TS71.0%±7.5%．COD134±34mg·L－112.47±4.00mg·L－1TN22.11±10.09mg·L－1TP12.57±3.39mg·L－1．Eiseniafoetida．15～25℃、70%～80%、pH6.5～7.510．1.31.3.182．Nielsen11、、80、65、48kg·m2·a－1312、、0.65、0.54、0.43kg·m－23．3d70%13．70%～80%3d．Sonowal14．25℃2016317d．1、1．1.3.251cm3．VS100．．VSCJT221-2005《》15TTC16．Origin8.0SPSS17.0One-WayANOVO95%．061131Table1Parametersofeachworkingcondition/kg·m2·a－1/L/g/kg·m－211652.6002482.08.60.433652.68.60.434652.610.80.545652.6130.656803.38.60.437652.68.60.438652.68.60.43155h22.1．65kg·m2·a－1350、30、10mm2．41.39%、22.72%42.59%．．．80%．50mm30mm．17．10mm．10mm．2Table2Statisticalresultsofearthwormbiomassandquantities/mm/g//%508.648841.39308.678622.72108.6401642.592.22、3648、65、80kg·m2·a－13．21、2、3、6VSVS．．18．VS19．31、2、36VS87.9%±4.4%、83.6%±8.9%、86.0%±4.5%、87.3%±1.3%64.6%±6.8%、56.4%±17.5%、58.4%±12.8%、59.9%±6.0%．P＜0.05．VS20．61611382VSFig．2ChangesofmoisturecontentandVSunderdifferentsludgeloading3VSFig．3DistributionofmoisturecontentandVSunderdifferentsludgeloadingVSVSVS．1．21．1．dehydrogenaseactivityDHA22．4DHA5．3DHAP＜0.0548kg·m2·a－1DHA．．DHA23．．4DHAFig．4Averagevalueofdehydrogenaseactivityunderdifferentsludgeloading2.31、3、450、0.43、0.54、0.65kg·m－2．526113VSVS．61、3、45VS87.9%±4.4%、86.0%±4.5%、85.3%±4.0%、86.1%±4.4%64.6%±6.8%、58.5%±12.8%、58.7%±9.9%、61.4%±7.2%．1P＜0.05VS24．5VSFig．5ChangesofmoisturecontentandVSunderdifferentstockingdensities6VSFig．6DistributionofmoisturecontentandVSunderdifferentstockingdensities25．VS15%10%．Iannelli260～15cmVS25%3%．7DHA1DHAP＜0.01．5DHA7DHAFig．7Averagevalueofdehydrogenaseactivityunderdifferentstockingdensities3611380.65kg·m－2．0.65kg·m－2．2.43、78、．891、3、78VS87.9%±4.4%、86.0%±4.5%、86.8%±3.0%、86.4%±3.8%64.6%±6.8%、58.5%±12.9%、60.7%±13.0%、62.3%±11.0%．8VSFig．8ChangesofmoisturecontentandVSunderdifferentloadingfrequencies9VSFig．9DistributionofmoisturecontentandVSunderdifferentloadingfrequencies10DHAFig．10Averagevalueofdehydrogenaseactivityunderdifferentloadingfrequencies3VS10DHA．78VS．7．P＞0.05．1VS46113．31．10mm．2P＜0.05．DHAVS15%10%0.65kg·m－2．3P＜0.05P＞0.05．．1.J．2010371183-84．2．J．201411435-3741．3．J．200218431-33．YangXWDuYH．OptionsforsewagesludgetreatmentandreclamationforreuseJ．ChinaWater＆Wastewater200218431-33．4．J．2003291119-22．HuangLJDuHLuCHetal．ApplicationanddevelopmentofsludgedryingandincinerationinEuropeanJ．Water＆WastewaterEngineering2003291119-22．5．J．201481305-309．CuiYBＲanCQWangFetal．HumificationcharacteristicsofstabilizedsewagesludgeinsludgedryingbedandreedbedJ．ChineseJournalofEnvironmentalEngineering201481305-309．6UggettiEFerrerILlorensEetal．SludgetreatmentwetlandsareviewonthestateoftheartJ．BioresourceTechnology201010192905-2912．7NielsenSBruunEW．Sludgequalityafter10-20yearsoftreatmentinreedbedsystemsJ．EnvironmentalScienceandPollutionＲesearch2014221712885-12891．8．D．2014．ZangLL．EffectofearthwormonsewagesludgeatagriculturalchemicalcharacteristicsD．LanzhouNorthwestNormalUniversity2014．9．J．2010461421-1425．ChenXMWangHFuXYetal．EffectofvermicompostingusingEiseniafoetidaonpropertiesofsewagesludgeJ．ChineseJournalofEnvironmentalEngineering2010461421-1425．10AliUSajidNKhalidAetal．AreviewonvermicompostingoforganicwastesJ．EnvironmentalProgress＆SustainableEnergy20153441050-1062．11NielsenS．SludgetreatmentinwetlandsystemsA．InDiasVVymazalJEds．．InternationalSeminarontheuseAquaticMacrophytesforWastewaterTreatmentinTreatmentwetlandC．Lisbon-Portugal2003．12HaimiJHuhtaV．CapacityofvariousorganicresiduestosupportadequateearthwormbiomassforvermicompostingJ．Biol