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ID:34849642
大小:2.69 MB
页数:55页
时间:2019-03-12
《城市生活污泥对农田深层土改良效果的初步探究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据4扬州大学硕士学位论文decreasedtoacertainextent,suggestingthatthesludgemightbeadditionaladvantagetotheimprovementofalkalisoil..TheselectionofsludgeratioshouldbedependentonthepHvalueofthesoil.2.Sincethesludgewasshortofpotassiumelement,therewasnosignificantchangeintheconten
2、tofpotassiuminsubsoil,butremarkableincreaseinelementsofnitrogenandphosphoruswasobserved.Itwasstronglyrecommendedtoutilizethesludgeaccompaniedwithpotassiumfertilizer.Intheexperiment,theheavymetalcontentremainedunderthelimitoftheSecondarysoilenvironmentalqualitystand
3、ardsforheavymetalswitlltheadditionofsludge.However,therewaspotentialriskinducedbytheheavymetalaccumulationalteryearsofapplicationTherefore,theeffectsofmunicipalsludgeapplicationshouldbecarefullymonitoredandnottoexceedtherecommendedtime1imit.3.Theoverdoseofsludgewas
4、foundtoinhibittheaccumulationandabsorptionofnutrientsfortheplants.Furthermore,theexcessivesludgeadditionresultedinhilghcontentofnitrateinplantleaves.Takingintoaccounttheproductionandfoodsecurity,theoptimalratioofsludgeappearedtobe5%inthepresentexperiment.Keywords:s
5、ludge;deepsoil;plant;heavymetal;environment万方数据王凌玮城市生活污泥对农山深层土改良效果的初步探究目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..1Abstract...........................................................................................................................................
6、..............⋯.⋯3目录⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..5第一章文献综述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7弓l言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..⋯71.1城市污泥及其性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯71.1.1城市污泥的定义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.71.1.2城市生活污泥的
7、组成⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.81.2城市生活污泥的性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯81.2.1城市生活污泥的物理性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.81.2.2城市生活污泥的化学性质⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.81.3城市生活污泥与环境⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯101.3.1城市生活污泥处置不当的危害⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯lO1.3.2城市生活污泥对
8、土壤理化性质的改良⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯101.4城市生活污泥的处理处置技术及资源化利用⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一131.4.1城市生活污泥的处理技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯131.4.2城市生活污泥的处置和资源化利用途径⋯⋯
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