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1、農(nóng)業(yè)環(huán)境科學(xué)學(xué)報2009,28(1):199-203JournalofAgro-EnvironmentScience施用污泥堆肥對土壤環(huán)境及高羊茅生長的影響1,21111劉強,陳玲,黃游,邱家洲,趙建夫(1.同濟大學(xué)污染控制與資源化研究國家重點實驗室,上海200092;2.井岡山大學(xué)生命科學(xué)學(xué)院,江西吉安343009)摘要:以上海曲陽水質(zhì)凈化廠污泥堆肥為研究對象,采用盆栽和土柱模擬的方法研究了污泥堆肥土地利用對土壤環(huán)境和植物生長的影響。結(jié)果表明,污泥堆肥和灘涂土混配后可降低土壤pH值,提高土壤養(yǎng)分含量,增加高羊茅生物量,同時也增加了土壤Pb、Cu和Zn3種
2、重金屬元素含量,但各混合土壤中重金屬含量均遠低于土壤環(huán)境質(zhì)量Ⅱ類標準。另外,污泥堆肥混配土壤基本不存在病原菌擴散的風(fēng)險;土柱淋溶試驗表明,污泥堆肥施用比例為10%時,不會導(dǎo)致地下水NO3-N和重金屬含量超過地下水Ⅱ類標準。綜上,污泥堆肥施用比例只要控制在10%以內(nèi),可安全進行土地利用。關(guān)鍵詞:污泥堆肥;土壤環(huán)境;高羊茅中圖分類號:S141.4文獻標志碼:A文章編號:1672-2043(2009)01-0199-05EffectsofApplicationofSewageSludgeCompostonSoilEnvironmentandFestucaarun
3、dinaceaSchrebLIUQiang1,2,CHENLing1,HUANGYou1,QIUJia-zhou1,ZHAOJian-fu1(1.StateKeyofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092,China;2.CollegeofLifeSciences,JinggangshanUniversity,Ji’an343009,China)Abstract:EffectsoflandutilizationofShanghaiQuyangsewagesludgec
4、ompostonsoilenvironmentandtallfescue(FestucaarundinaceaSchreb)growthwerecarriedoutbyusingpotscaleexperimentsandleakagefacilities.Theresultsshowedthatmixtureofsludgecompost-soilsimulatingtheapplicationonlanddecreasedpH,increasedcontentsofnutrientelementsincludingtotalnitrogen,total
5、phosphorus,organicmatterandavailableformsofnitrogen,phosphorusinthesoil.Biomassoftallfescue(FestucaarundinaceaSchreb)during5.5-monthcultiva-tionperiodwasincreasedby319.3%,426.9%and178.0%withsewagesludgecompostapplicationratiosof5%,10%and20%,respectively.Ingeneral,mixtureofsludgeco
6、mpost-soilsignificantlyincreasedthelevelofPb,Cu,Zninthesoil,buttheseconcentrationsweresignifi-cantlyunderthe2ndgradenationalenvironmentalqualitystandardforsoils.Inaddition,thereisnoriskofcontaminationofpathogenicbac-teriainmixedsoils.Soilcolumnleakageexperimentsindicatedthatthecon
7、tentsofNO3-Nandheavymetalsdonotsurpassthe2ndgradenationalqualitystandardforgroundwaterwith10%applicationrateofsewagesludgecompostinthemixedsoil.Inaword,thesewagesludgecompostcanbesafelyappliedtolandaslongastheapplicationrateofsewagesludgecompostwascontrolledfewerthan10%.Keywords:s
8、ewagesludgecompost;soilenvironmen