海洋污染英文演講稿.ppt
《海洋污染英文演講稿.ppt》由會(huì)員分享,可在線閱讀,更多相關(guān)《海洋污染英文演講稿.ppt(14頁(yè)珍藏版)》請(qǐng)?jiān)谘b配圖網(wǎng)上搜索。
marinepolutioninChina teammembers Theloseoflivingenvironment 1 enclosingtideland Marine coastalprojectandwaterwaydredgingactivitiesarethecauses thus thenormalactivityofMarinelifeisSeriouslyinterfered sometimesevenmakeMarinebiologicalhabitatcompletelyextincted Andthedeclineinthenumberofmangroveisthebestexample overfishingandilleagallytrade 2 becausealotofMarineanimalhasveryhighornamentalvalueorcanbetreatedasartcollection andwithnutritionalvalue peoplearedrivenbyintereststofishandevenillegallycatch What smore Marinefishingvesselsincreaseddramatically fishingsegmenthasimprovedsteadily thesecauseseriousdestructionoftheresourcesandevenmakethemdieout alienspeciesinvasion 3 withthedevelopmentofChina soceantransportation Thespreadofbreeding andsoliciting foreignMarinespecies quantityincreasedsharplyresultingintheMarineecologicalsystemstructure simbalance functiondegradationlossofdiversity whichmakesChineseoceanenvironmentfacesincreasingpressureofintrusion Marineenvironmentpollution 4 Oceanoilleak Marinetransportation variousland sourcedpollutants mainlycoastalindustrialwastewaterandlifesewage dischargedintothesea aggravatingtheMarineenvironmentpollution andtheMarineecologicalenvironmenthasdeteriorated Thefivewastewaterdischargedintotheocean First thelow levelradioactivewastewater Theso calledlow levelradioactivewastewaterisalitercontainedradioactivitylessthan10 5 Curiewastewater Thesecond containingtheeasilydegradableorganiccompoundsandheavymetalsinwastewater Easilydegradableorganicmatter microorganismsundernaturalconditionsisdifficultdescendingdecompositionoforganicmaterialoccursinthenaturalenvironmentcanbemaintainedindefinitelyanddisseminated andthusaseriousimpactonthemarineenvironmentandecological Third medicalsewagecarryingpathogens domesticsewageandindustrialwastewater Pathogens infectiousagents includingpathogens diseaseeggs viruses Pathogenscansurviveinthewatercanenterthebodythroughthefoodchain whichmakeyousick fourth Industrialwastewatercontainingorganicmatterandnutrients sewage Wastewatercontainingorganicandnutrientsubstancesthatcontainprotein fat aminoacids carbohydratesandotherozone depletingorganicmatterandnitrogen phosphorusandothernutrientsinwastewater Fifth theheatedwaste Heatedwastewateremissionsfromthermalpowerplants nuclearpowerplants petrochemical nonferrousmetalsmeltingandotherindustrialprocessesinhigh temperaturecoolingwater ashwatertemperatureishigherthannormalseatemperatureswastewater Alargenumberofnutrient richhumansewage industrialwastewater agriculturalwastewateremissionseaof redtideorganismswillusenutrientssuchasnitrogen phosphorus carbonfranticallybreedingandaccumulationinducedredtideoccurred Measure Sewagemarinedisposal Oceandisposalofsewageisprohibitedoreffectivemeasurestolimitemissionsandfreedomofsewageshorerandomrow concentratedpretreatmentofsewageworkssystem transportationbypipelinetotheunderwaterdepthoftheocean emissionsbythediffuser sothatinassmallaspossiblewithinahighdegreeofdilution toreducetheimpactontheenvironment Thissewagemarinedisposalengineering comparedwiththeconventionalsecondarytreatmentofsewage saving1 2to1 3ofinvestmentininfrastructureandoperationandmanagementcosts covering30to40percentreductioninbenefitsareenormous conclusion Overtheyears theChinesepeople sawarenessofresourceprotectionisweakandthelegalconceptisthin Weoftendestructatfirstandprotectwhensituationisterrible somanylandaquaticorganismsandmarinelifehavedisappearedfromoursight AsaresultofKindsofreasons theChinesemarinebiodiversityandthemarineenvironmentisstillisworrying THANKYOU- 1.請(qǐng)仔細(xì)閱讀文檔,確保文檔完整性,對(duì)于不預(yù)覽、不比對(duì)內(nèi)容而直接下載帶來(lái)的問(wèn)題本站不予受理。
- 2.下載的文檔,不會(huì)出現(xiàn)我們的網(wǎng)址水印。
- 3、該文檔所得收入(下載+內(nèi)容+預(yù)覽)歸上傳者、原創(chuàng)作者;如果您是本文檔原作者,請(qǐng)點(diǎn)此認(rèn)領(lǐng)!既往收益都?xì)w您。
下載文檔到電腦,查找使用更方便
9.9 積分
下載 |
- 配套講稿:
如PPT文件的首頁(yè)顯示word圖標(biāo),表示該P(yáng)PT已包含配套word講稿。雙擊word圖標(biāo)可打開(kāi)word文檔。
- 特殊限制:
部分文檔作品中含有的國(guó)旗、國(guó)徽等圖片,僅作為作品整體效果示例展示,禁止商用。設(shè)計(jì)者僅對(duì)作品中獨(dú)創(chuàng)性部分享有著作權(quán)。
- 關(guān) 鍵 詞:
- 海洋污染 英文 演講
鏈接地址:http://italysoccerbets.com/p-5945787.html