水环境英文课件

Waterastheoriginoflifeisanecessaryconditionoflivingandeconomicdevelopment.Itisalsothemostimportantpartofhuman’sbody.

水是生命的源泉，是生命存在与经济发展的必要条件，同样是构成人体组织的重要部分。Chinaisacountrywhichisalwayslackofwaterresources.（中国是一个水资源短缺、水灾害频繁的国家）Manyfactoriesstopproducingandtheagriculturalproductionisreducingevenwithatotalcrop.（工厂停产、农业减产甚至绝收）Awfuleffectofsocietyandahugelostineconomy（不良的社会影响和较大的经济损失）Thedroughtinnorthernchina

中国北方旱灾ThefloodinsouthernTaiwan南台湾50年来最严重水灾Acid,alkaliandoxidizingagentthecreaturesinwater(酸、碱、氧化剂等有机毒物)Whentheorganicsubstancesaredecomposedbymicroorganism,theoxygenwillbetakenaway,whichwillaffectthecreaturesinthewater.Thenwhenallthedissolvedoxygenistakenawayfromthewater,theorganicsubstancewillbegintodecomposetheozoneproducingsomegaswithterriblesmellingsothatthequalityofwaterbecomeworse.(污水中的有机物被微生物分解时消耗水中的氧，影响水生生物的生命，水中溶解氧(DO)耗尽后，有机物进行厌氧分解，产生难闻气体，使水质进一步恶化。)Humanactivities（人类活动）industrialpollution、agriculturalpollution、livingpollution（工业污染源、农业污染源、生活污染源）Thewastewatercontainsmanytoxicelementsandithardtobedealwith.(量大、面积广、成分复杂、毒性大、不易净化、难处理)Howarewesupposedtodealwithwaterpollution?Firstly,intensifytheprotectionfortheintakeofwater.Secondly,improvethegovernanceofwaterpollutioninthecityandtheindustrialwastewater.Thirdly,reinforcethecitizens’awarenessofenvironmentalprotection.Forth,utilizethewastewater.Fifth,adoptdigitalizationgovernanceforthetreatmentofpollutedwater.Sixth,forbidtheindustrialwastewaterdischargedbfactory.那我们应该采取什么样的措施呢？1、强化对饮用水源取水