海洋污染英文演講稿.ppt
《海洋污染英文演講稿.ppt》由會員分享，可在線閱讀，更多相關(guān)《海洋污染英文演講稿.ppt（14頁珍藏版）》請在裝配圖網(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下載提示(請認真閱讀)
- 1.請仔細閱讀文檔，確保文檔完整性，對于不預(yù)覽、不比對內(nèi)容而直接下載帶來的問題本站不予受理。
- 2.下載的文檔，不會出現(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，請點此認領(lǐng)！既往收益都歸您。
文檔包含非法信息？點此舉報后獲取現(xiàn)金獎勵！
下載文檔到電腦，查找使用更方便
9.9 積分
| 下載 |
還剩頁未讀，繼續(xù)閱讀
- 配套講稿：
如PPT文件的首頁顯示word圖標，表示該PPT已包含配套word講稿。雙擊word圖標可打開word文檔。
- 特殊限制：
部分文檔作品中含有的國旗、國徽等圖片，僅作為作品整體效果示例展示，禁止商用。設(shè)計者僅對作品中獨創(chuàng)性部分享有著作權(quán)。
- 關(guān) 鍵 詞：
- 海洋污染 英文 演講
裝配圖網(wǎng)所有資源均是用戶自行上傳分享，僅供網(wǎng)友學(xué)習(xí)交流，未經(jīng)上傳用戶書面授權(quán)，請勿作他用。
鏈接地址：http://www.3dchina-expo.com/p-5945787.html