简介：Bothinorganicandorganicpillaredmontmorilloniteswereusedtoadsorbphenol.BatchkineticsandisothermstudieswerecarriedouttoevaluatetheeffectofequilibriumtimeandpHonadsorptionofphenolbymontmorillouitesandre-adsorbingcharacteristicsofpillaredmontmorillonites.TheadsorptionofphenolincreasedwithincreasingsolutionpHvalues.Theeliminationratioofphenolfromthesolutionbytheabsorptionoforganicmodifiedpillaredmontmorillonite(OrPMt)reachedequilibriumquicklyaftervibratingfor5minutes.Meanwhilefororganicmontmorillonite(OrMt),pillaredmontmorillouite(PMt)andmontmorillonite(Mt),thetimetoreachphenol-absorptionequilibriumwere20,30and90minutes,respectively.Theadsorbingcapacityofthepillaredmontmorillonitemodifiedwithsurfactantimprovedgreatly.Thephenol-adsorbingcapacityofpillaredmontmorillonitesmainlydependedonmicroporousstructureandsurfacecomponentofthemodifiedclays.Aftercalcinationat500℃,thepillarstructureandthebasalspacing(1.83nm)werestillstable.Sothepillaredmontmorillonitecouldberecycled,anditwasapotentialmaterialforadsorbingenvironmentalpollutants.

简介：Anenvironmentalcapacitymodelforthepetroleumhydrocarbonpollutions(PHs)inJiaozhouBayisconstructedbasedonfieldsurveys,mesocosm,andparallellaboratoryexperiments.SimulatedresultsofPHsseasonalsuccessionsin2003matchthefieldsurveysofJiaozhouBayresaonablywellwithahighestvalueinJuly.TheMonteCarloanalysisconfirmsthatthevariationofPHsconcentrationsignificantlycorrelateswiththeriverinput.Thewaterbodyinthebayisreasonablysubjectedtoself-purificationprocesses,suchasvolatilizationtotheatmosphere,biodegradationbymicroorganism,andtransporttotheYellowSeabywaterexchange.TheenvironmentalcapacityofPHsinJiaozhouBayis1500tonsperyearIFtheseawaterqualitycriterion(GradeⅠ/Ⅱ,0.05mgL-1)intheregionistobesatisfied.Thecontributiontoself-purificationbyvolatilization,biodegradation,andtransporttotheYellowSeaaccountsfor48%,28%,and23%,respectively,whichmakethesethreeprocessesthemainwaysofPHspurificationinJiaozhouBay.

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简介：在经济与文明日益发展的今天，环境污染被全世界人们所关注，生存环境的健康与洁净与我们每一个人的生命都息息相关，如何治理环境污染，保护良好的生存空间，已经迫在眉捷，看看下文的中学生朋友们又是如何看待这一现象的吧！

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简介：Thereportby700scientistsesti-mates(估计)thateconomiclossesfromso-callednaturaldisastersrosefromUS$4billionperyearinthe1950stoUS$40billionin1999.

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简介：Thispaperusingfinitedifferenceschemeforthenumericalsolutionofadvection-dispersionequationdevelopsaone-dimensionalwaterqualitymodel.ThemodelalgorithmhassomemodificationoverothersteadystatemodelsincludingQUAL2E,whichhavebeenusedsteadystateimplementationofimplicitbackward-differencenumericalscheme.Thecomputerprograminthedevelopedmodelcontainsaspecialunsteadystateimplementationoffourpointimplicitupwindnumericalschemesusingdoublesweepmethod.Thesuperiorityofthismethodinthemodelingprocedureresultsthesimulationefficacyundersimplifiedconditionsofeffluentdischargefrompointandnon-pointsources.Themodelishelpfulforeyeviewassessmentofdegreeofinteractionbetweenmodelvariablesforstrategicplanningpurposes.ThemodelhasbeenappliedforthewaterqualitysimulationoftheHanjiangRiverbasinusingflowcomputationmodel.Modelsimulationresultshaveshownthepollutantsprediction,dispersionandimpactontheexistingwaterquality.Modeltestshowsthemodelvaliditycomparingwithothersophisticatedmodels.Sensitivityanalysiswasperformedtooverviewthemostsensitiveparametersfollowedbycalibrationandverificationprocess.

简介：自从1980年代，评论在Yangtze三角洲在环境发展和环境考古学的研究上被进行。以前的环境发展和环境考古学的研究结果能被总结进4个方面：1)泰胡·莱克的形成和进化；2)在全新统时代的违反和海平面的变化；3)史前的环境的重建；并且4)在人的文明(文化打断的形成)的上升和秋天的环境变化的影响。基于这评论，在现在的研究方法的一些限制和可能的结果在这篇论文被指出。

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简介：Environmentalsociologyandthesociologyofnaturalresourcesaretwokeysubdisciplinesofthesociologicalstudyontheinteractionsbetweennatureandhumansociety.Previousdiscussionontherelationshipsofthesetwofieldshaslargelyfocusedontheirdistinctionsandsynthesisinwestern(particularlyAmerican)academia.EnvironmentalsociologyemergedasanimportantsociologicalsubdisciplineinChinaintheearly1990sandisundervigorousdisciplinaryconstructionatpresent.Bycontrast,thesociologyofnaturalresourcesisstillanoveltermformostChineseresearchers.Thisarticleprovidesasystematicreviewofrecentliteratureontherelationshipsbetweenenvironmentalandnaturalresourcesociologies,whichshouldprovideimportantimplicationsforthefurtherdevelopmentofenvironmentalsociologyinChina.

简介：Therelationshipbetweentheemissionofpollutantandeconomicgrowthhasattractedalotofattentionintheenvironmentaldebateoftherecentdecades.BasedonsometheoreticalandempiricalresearchonenvironmentalKuznetscurve(EKC),thispaperintroducestheenvironmentaltechnicalinnovationandenvironmentalinvestmentintoSolowgrowthmodeltodiscusstherelationshipbetweenGDPpercapitalandtheemissionofpollutant.Bythedynamicsimulationandparametersanalysis,theresultsofthemodelindicate:(1)when'green'technicalprogressandenvironmentalinvestmentarefixed,therelationshipbetweenGDPpercapitalandtheemissionshowsthelinearrelationship;(2)'green'technicalprogresscanleadtothepositivegrowthrateswithadecreasinglevelofemis-sion,whichiscompatiblewithanEKC;(3)theproportionoftheenvironmentalinvestmentcanleadthedifferentgrowthratesandlevelofemission.Theseresultscanexplainthatdevelopingcountriesare'toopoortobegreen'.

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简介：Themainremovalmechanismsforthedegradationsofsevenpollutantsinwastewatertreatmentwetlandswereanalysed,andamathematicalmodelwasestablishedtoquantifytheremovalofeachpollutant,basedonitsmainremovalmechanisms.Subsurfacehorizontalflowwetlandsweretreatedasaseriesofcontinuousstirred-tankreactors(CSTRs).Kineticmodelsfortheremovalofbiochemicaloxygendemand,chemicaloxygendemand,ammonia,totalnitrogenandfaecalcoliformswereestablishedbycombiningMonodorfirst-orderkineticswithCSTRassumptions.Thesetentativemodelsaccountforawiderangeoffactorsthataffectwetlandperformance,butthemodelshavenotbeenprovenbyexperimentdata.Dependingonthederivationofvariouscoefficientsinthemodelsandverificationbyactualperformancedata,thisstudymayprovideastartingpointforanintegratedpollutantremovalmodeltobedeveloped,andexperimentallyverified,therebymakingastepforwardfromthecurrentgreenbox'approachofwetlanddesign.

简介：Basedonthestatisticsofsurfacedrifterdataof1979–2011andthesimulationofnuclearpollutantparticulatemovementssimulatedusinghighqualityoceanreanalysissurfacecurrentdataset,thetransportpathwaysandimpactstrengthofFukushimanuclearpollutantsintheNorthPacifichavebeenestimated.Theparticulatesareusedtoincreasethesamplingsizeandenhancetherepresentativenessofstatisticalresults.Thetrajectoriesofthedriftersandparticulatesarefirstexaminedtoidentifytypicaldriftingpathways.Theresultsshowthattherearethreetypesoftransportpathsfornuclearpollutantsatthesurface:1)mostpollutantparticlesmoveeastwardandarecarriedbytheKuroshioandKuroshio-extensioncurrentsandreachtheeastsideoftheNorthPacificafterabout3.2–3.9years;2)someparticlestravelwiththesubtropicalcirculationbranchandreachtheeastcoastofChinaafterabout1.6yearsaccordingtoonedriftertrajectoryandabout3.6yearsaccordingtoparticulatetrajectories;3)alittleofthemtravelwithlocal,smallscalecirculationsandreachtheeastcoastofChinaafterabout1.3–1.8years.Basedontheparticulates,theimpactstrengthofnuclearpollutantsatthesetimescalescanbeestimatedaccordingtothetemporalvariationsofrelativeconcentrationcombinedwiththeradioactivedecayrate.Forexample,Cesium-137,carriedbythestrongNorthPacificcurrent,mainlyaccumulatesintheeasternNorthPacificanditsimpactstrengthis4%oftheinitiallevelattheoriginatingFukushimaareaafter4years.Duetolocaleddies,Cesium-137inthewesternNorthPacificis1%oftheinitialpollutantlevelafter1.5yearsandcontinuouslyincreasesto3%after4years.Theverticalmovementofradioactivepollutantsisnottakenintoaccountinthepresentstudy,andtheestimationaccuracywouldbeimprovedbyconsideringthree-dimensionalflows.

简介：学习特殊为对器官、无机的污染的评价提供一条基线，在Pyeongchang河的表面沉积的重金属污染，南朝鲜。对学习区域的评价用完了尊重到金属污染负担，生态的风险和geoaccumulated风险。在使用的索引之上基于，一个优先级索引(Pindex)被用来评价最大的污染地点。尽管在所有沉积的水银的集中在指南下面，重要充实的污染被所有应用索引观察。是期望，污染负担索引(PLI)的价值，生态的风险索引(RI)和表明的geoaccumulation风险索引(Igeo)在在上游的区域降低重金属污染与相比下游。无可否认地，沉积对未受污染根据PLI稍微弄脏当到极其高生态的风险的高度在几件沉积样品被观察时。而且，所有样品作为每Igeo没有被污染。在Igeo的简化以后，Pindex证明最大可能与2.537的价值污染了沉积。尤其是，保护的措施应该被带去被Pindex优先考虑的高度污染的区域。无可否认地，全部的器官的碳的最大的集中，全部的氮，无机的氮，全部磷，无机磷，钙，镁，钠和钾显著地作为7.8椠?被观察?潣摬猠敷？

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简介：Basedon3DBiot’sconsolidationtheoryandnonlinearDuncan-Chang’smodel,a3DFEM(finiteelementmethod)programisdevelopedconsideringthecouplingofgroundwaterseepageandsoilskeletondeformationduringexcavation.Thecomparisonbetweentheanalysisresultconsideringthevariationofwaterheaddifferenceandthatwithoutconsideringitshowsthattheporewaterpressuredistributionoftheformerisdistinctlydifferentfromthatofthelatterandthatthefoundationpitde-formationsoftheformerarelargerthanthoseofthelatter,sothattheresultwithoutconsideringthevariationofwaterheaddif-ferenceisunreliable.Thedistributionrulesofsoilhorizontalandverticaldisplacementsaroundthepitandexcessporewaterpressureareanalyzedindetailintimeandspace,whichisverysignificantforguidingundergroundengineeringconstructionandensuringenvironmentsafetyaroundthepit.

简介：Establishedin1953,CollegeofMarineandEnvironmentalSciences(formerlyknownasSaltChemicalEngineeringDepartmentofTianjinCollegeofLightIndustry),changeditsnametoCollegeofMarineScienceandEngineeringofTianjinUniversityofScienceandTechnologyin2001,andwasrenamedCollegeofMarineandEnvironmentalSciencesofTianjinUniversityofScienceandTechnologyin2015.After60yearsofdevelopment,ithasgrownintoateachingandresearchorientedcollegewiththecombinationofscienceandengineering.MarineScienceandEnvironmentalScienceandEngineeringasitscoredisciplinarysystem.

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