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1、lIrllrlHII]H!llllll!lllrllllllllllllIY1525048分類號—TVl42—；X524密級單位代碼學(xué)號10618106290806墨麼交通天謦碩士學(xué)位論文論文題目：流速對水體富營養(yǎng)化的影響研究研究生姓名；蔣文清導(dǎo)師姓名、職稱：周富春副教授申請學(xué)位門類專業(yè)名稱：論文答辯日期學(xué)位授予單位工學(xué)水力學(xué)及河流動力學(xué)答辯委員會主席：許光祥評閱人：盧培利2009年4月塹渣焦ABSTRACTTheoutbreakofwaterbloomisal(indofexcessivealgaepropagatio
2、nandaggregationphenomenaatacertaindegreeofnutrition，climate，hydrologicalconditionsandecologicalenvironment，andresultwhichenvironmentalfactorscombiningeffectsformsuchasTN，TP，pH，flowrateanddissolvedoxygen．Themainproblemsoflakeeutrophicationarealgalbloomsmaketheoutb
3、reakofthewaterbodylosstheuseoffunctions．Thepurposeofthispaperthroughtheindoorsandoutdoorstoexperimentwitheffectsofflowvelocityonalgaegrowth，aggregation，toidentifyrestrictionflowwhenalgalhappened，andthroughgrayincidenceorderanalyzesmechanismontheimpactoftheflowvel
4、ocityoneutrophicationtoprovidethebasisforthepreventionandtreatmentofeutrophication．Finally，thepapercomestothefollowingconclusions：：①Thispaperconductesindoorsandoutdoorstoexperimentwithalgalgrowthandcomestoapreliminaryverificationoftheexistenceofthecriticalflowvel
5、ocity．Ataparticularconditionsfindoutthecriticalflowvelocityofthegrowthofalgae．Fromtheindoorsexperiment，wecandiscovermatwaterbloommaybetakeplacein1000r／minaround．Fromtheoutdoorsexperiment，wecanfindoutthatwaterbloomofcriticalflowvelocityshouldbebetweenQ．08m
6、SandQ．1
7、m
8、S．②ThechangeofChlashowsthesametrendindifferentflowvelocity，whichincreasedatfirst，thendeclined．Chlorophyllaindicatestheproductivityofalgaeinwater,SOthattheflowvelocityofchlorophyllaindicatestheaffecttothewaterbody．(查)Comparedwithotherfactorsthegreyincedenceanaly
9、sisshowsthat，DOandpHhavecloserelationwithalgaebloom，analyzingthereasons，DOandpHmaybemainlyproducedbyalgaephotosynthesis，SOtheyhavecloserelationtothecolumeofthealgalgrowth．④Instaticcondition,thecorrelationoftotalphosphorus，totalni打ogen，flow，DO，pHandChla，isbetween0
10、．548and0．680；indynamiccondition，thecorrelationoftotalphosphorus，totalnitrogen，flow,DO，pHandChlahasasubstantialincreasebetween0．656and0．994．⑤Throughauthenticati
