演讲稿可以包括事实,数据,引用和案例研究等支持材料,通过与听众互动,演讲稿可以促进与听众的沟通和反馈, ,以下是精品文档站小编精心为您推荐的污染空气的演讲稿6篇,供大家参考。
污染空气的演讲稿篇1
teachers students:
hello everybody
today i lecture on the topic of air pollution. air pollution is a new branch of atmospheric science it is to study in different weather conditions into the atmosphere of the pollutants in the atmosphere transmission dilute diffusion transformation and remove the rule and application of science. this subject originated from the 20xx s 20 years british atmospheric diffusion experiment was carried out but only in the '50 s the development of modern industry and city population is highly concentrated there appeared the serious urban or industrial pollution events in december 20 's london smog event for example took the lives of more than four thousand people these make people wide attention and research of atmospheric pollution to the 60 s then gradually formed this new independent discipline.
air pollution due to human activity or natural process and out into the atmosphere into some harmful substances (pollutants) when the amount of discharged into enough (pollutant concentration up to a limit) makes the original clean air quality to drop if this situation is maintained long enough will be to humans animals plants and the atmosphere cause harm and adverse effects of the atmospheric state known as air pollution. of air pollution has three elements: the concentration of pollution sources and pollutants harm to human and biological.
clean the atmosphere is one of the necessary conditions for the survival of humans in one person in five weeks no eating or five days without drinking water to be able to sustain life but not breathing air for more than 5 minutes then die the body to absorb every day 10-12 cubic meter of air. thus eliminating air pollution or keep pollution concentration falls below a certain limit is how important.
pollution sources and pollutants discharged into the source of harmful substances into the atmosphere pollution sources harmful substances into the atmosphere pollutants. atmospheric pollution source points of artificial and natural sources
the harm of air pollution and influence
atmospheric pollution on human and environment caused by the harm and influence has gradually been recognized in the aggregate has the following several aspects:
(1) the harm to human health. human suffering has three pollute the air surface skin contact with the air inhaled and eating food containing atmospheric pollutants besides can cause respiratory and lung diseases but also on the cardiovascular system liver etc serious can take away the life.
(2) the harm of biological. animals because of the inhaled air pollution or eat foods containing contaminants and disease or death atmospheric pollutants can make the plant disease resistance drop influence the growth leaf spot wither or die.
(3) the harm of items. such as the textile clothing leather metal products construction materials culture art etc. chemical damage and defiled damage.
(4) cause acidic precipitation such as agriculture forestry fresh water aquaculture.
(5) destroys the high-altitude ozone layer ozone hole formation cause harm to human and biological survival environment.
6. impact on the global climate such as the increase in carbon dioxide and other greenhouse gases will cause the earth's atmosphere warms lead to increased global weather disasters and aerosol particles such as smoke increase the atmospheric turbidity solar radiation affect the longwave radiation the earth may lead to abnormal weather climate.
how to prevention and control of atmospheric pollution reduce the harm of air pollution and influence constitute a major and urgent research subject. prevention and control of atmospheric pollution
prevention and control of atmospheric pollution is a huge system engineering need to be individual and collective national and the joint efforts of the world can consider to take measures in the following aspects:
(1) to reduce emissions. use more pollution-free energy (such as solar energy wind energy hydroelectric power) reform the energy structure with low pollution energy (such as natural gas) pretreatment of fuel (such as coal desulfurization) before such as improving combustion technology can reduce emissions. in addition before the pollutants into the atmosphere not use dust smoke abatement technology condensing technology liquid absorption technology recycling technology to eliminate some pollutants in the exhaust and can reduce the amount of pollutants into the atmosphere.
(2) to curb emissions and make full use of atmospheric self-purification ability. different meteorological conditions the capacity of the atmospheric pollutants into the same amount of pollutants the pollutant concentration was different. for wind good ventilation turbulence strong convection area and time atmospheric diffusion dilution ability is strong can accept more corporations to inversion region and time atmospheric diffusion dilution ability is weak cannot accept more pollutants otherwise it will cause serious air pollution. therefore respond to different regions different times for the effective control of emissions.
(3) site selection design of chimney urban and industrial planning should be reasonable don't emitters transition concentration repeated superposition don't cause pollution formation of local serious pollution incident.
(4) greening afforestation make more plants absorb pollutants reduce atmospheric pollution.
through the above explanation we know the importance of air for our human right from now on please protect the environment afforestation and create a better living environment!
today my speech is that under the flag of thank you.
污染空气的演讲稿篇2
敬爱的老师、同学们:
未来的空气净化器空气净化器,或许每个人都知道是什么东西,有些人的家里也放有空气净化器,可是我要说的空气净化器可不是家里的那种,我要说的空气净化器,功能可大啦。现在人们都被空气污染折磨的痛苦不堪,汽车产生的废气、森林火灾的烟雾、烟尘。都能污染空气,对我们人类的身体健康带来危害。而我的空气净化器这时就能产生大作用,它不像家里的那种空气净化器,只能吸收室内的二氧化碳,只要在空气污染严重的地方,比如:马路、工厂。安装一个空气净化器,然后在每个人的衣服、发卡、甚至鞋子上安装一个迷你的二氧化碳传送器,等人们到了某处空气污染指数到了超标的地方,迷你的二氧化碳传送器就会把周围的二氧化碳传到空气净化器,这时,空气净化器就会把二氧化碳变成新鲜氧气。
让人们如同沐浴在森林里,享受着森林裕说到着,恐怕爱美的人会担心迷你的二氧化碳传送器会影响了你的衣着美观了吧?这大可不必担心,因为我的二氧化碳传送器比蚂蚁还要小上一千倍一万倍,用肉眼根本看不到。而空气净化器的大小也只有盒子那么大,不会碍事。如果真在未来的某一天,我的空气净化器真的发明了出来。那么,北京可能再也不会出现雾霾,人们也不会为空气污染而感到苦恼,每天都呼吸着健康的空气。啊!这一切会是多么的美好啊!
污染空气的演讲稿篇3
尊敬的各位领导、老师、同学们:
大家好!
空气的自述有人说我是看不见摸不着的,也有人说我是地球的面纱,其实啊,我的名字大家非常熟悉——叫空气。我住在地球的最外面,我把地球轻轻地抱在怀里,与你们形影不离。
在广漠的宇宙中,我们的家庭可算是历史悠久的大家庭。我们推选出氧气、氨、氮、碳这三位成员作为家族中的核心,千百年来,我们在宇宙中默默无闻地生活。说起我的岁数,可是你们长者中的长者了,若要我说出来,恩——少说也有十亿年了。我算不上高尚伟大,但对地球上的生灵,我可以自豪地说:“我是无愧的。”我给了鲜花娇艳的姿态,我给了呱呱坠地的婴儿顽强的生命力……总之地球的生灵都要靠我,它的生命都是我给予的。
早晨,当太陽女神初升之时,陽光通过我射进千家万户,生灵们呼吸着我,人们向我点头微笑……就这样,过了好多年。我是地球上赖以生存的物质,俗话说:“远亲不如近邻”,因而人类对我非常地友好。但近几年来,人们的生活水平提高了,工业生产越来越发达了,却忽视了我,他们认为我是无足轻重的,使纯洁的我受到了污染。大约在两百年前,一些工业的废气排放出来,它们混杂在我的中间,天然的“过滤器”森林也被人们大批大批的砍伐掉了,鸟儿们无处安家。什么粉尘、烟灰全都寄托在我的身上,我好象成了天然的垃圾箱。人们呼吸了我而发生疾病,这使我万分痛苦,但人们却把“凶手”的帽子戴在我头上,什么害人精了。地球上的生灵请你们听听我的哀诉。蓝天上笼罩了尘烟,小河里的水不再清澈见底了,工厂里排放出的废气张牙舞爪地向我扑来。天长日久,你们呼吸着不干净的我,生出了各种疾病,它们时时威胁着你们的健康,虽然“环保”工作人员做了不少环保工作,但我需要更多的人来保护我……
有人说,当世界上最后一只老虎在孤独中寻求配偶,最后一只雄鹰从天空坠向大地,最后一只鸟儿发出悲惨的鸣叫时,人类也就失去了自己的未来。这真是警世之言!我希望我的自述能在地球上得到正确的回答,希望你们能帮助我摘掉“凶手”的帽子,保护你们赖以生存的环境。
同学们,行动起来吧,做个环保小卫士!
污染空气的演讲稿篇4
尊敬的老师,亲爱的同学们:
大家好!我是六(2)班的郑倩琦。
我演讲的题目是《保护环境,从我做起》这些年来。我们国家受到了严重的环境污染,特大沙尘暴在我国一次又一次发生,它将会掩埋草地、吞毁家园,严重地影响了人民的生活,使我们难以生存。绿色的草地将会变成沙漠,大树将会永远卧倒在地,而我们也不会快乐生活:幸福没有了,亲人没有了,连我们赖以生存的地球也会在茫茫宇宙中粉碎,就像玻璃摔在地上一样。然而这不仅是沙尘暴带来的灾难。
现在,连南极也遭到了污染破坏。因此,地球上失去了最后一块净土。泰山原来是被人们观赏的好地方,居然也成了保护区。
而我们,难道就只能袖手旁观吗,难道我们只能看着这美丽而脆弱的地球永远消失在人间吗?从此,我们能看到风吹草地见牛羊,白云下面马儿跑的那种景象吗?我们能为地球妈妈做些什么呢! 那就从身边的小事做起吧。当你和家人出去旅游时,不但自己不乱扔果皮,包装纸,而且发现垃圾还能主动拣起来投进垃圾箱里,那你就是一个保护环境的好少年;在学校里,看见自来水龙头没关紧,你能上前动手把它拧紧;看到光线充足,能主动把灯关掉,那你就是一名节约资源的好学生……只要大家都做一个爱护环境的有心人,就能为我们的家园尽一份力,添一片绿,将来就能把地球建成一个更加美好和谐的新家园。
保护环境,从我做起,从身边的小事做起,让我们的家园在希望中崛起吧。
谢谢大家,我的演讲结束了。
污染空气的演讲稿篇5
各位老师,各位同学:
大家好,非常荣幸有机会和大家分享关于环境保护的话题,一提到环境保护,我们最先想到的是:保护环境,人人有责,可是这句话却给了我们很多困惑,我们该怎么做,怎么保护,没有具体的方法,让我们空谈环保,没有一点意义,谁会相信自己能喊出一片蓝天绿水。我们现在就有一个机会,可以用我们自己的爱心行动,团结我们廊坊所有的中小学生,消灭掉我们廊坊的白色污染,大家愿意吗?太好了,同学们太给力了。
垃圾这个词的存在本身就是对我们中国人智慧的一种讽刺,更何况我们又被垃圾山所困扰,真的让我们中国人丢脸。但是垃圾却也是我们中国人几千年文化传承的一部分,早在秦汉的时候,韩信就发出感慨:"飞鸟尽良弓藏,狡兔死走狗烹。"可见我们中国人善于过河拆桥,卸磨杀驴,但到了我们这个时代,我们有办法,有信心,更有能力,从根本上消灭掉各种垃圾,同时让垃圾这个词成为历史,把我们的家园变得更加的美丽,舒适。今天我们就从白色垃圾开始,先把它消灭掉,大家说好不好?
我给大家带来了一些礼物,大家看:这是什么,这个,这个,可惜不够发给每个人的,我们做一个游戏,找几个有实力的大胃王,来一次吃东西大赛好不好,获得冠军的还另外有奖品。谁想上来参加比赛请举手。好了,"廊坊市某某小学第一届大胃王比赛"现在开始,大家给他们加油。恭喜你,得了冠军,给你奖状,"超级大为王"还有一张"白色污染大王",你发表一下获奖感言吧。他感到很疑惑,大家可能也觉得很迷茫,怎么回事呢?我们看看这些东西是什么,他这么短的时间制造了这么多的白色垃圾,有没有资格叫白色污染大王?
同学们给他挑挑毛病,他到底哪里做错了,如果换作是你,你该怎么做,你消灭白色污染的高招是什么?非常标准的做法,我也给你发一张奖状吧,"白色污染伪专家",你的这种办法是我们中国普遍采用的方法,但是白色污染却在一天天的严重,很显然这种方法无效,所以你的办法是无效,只能是伪专家,大家同意吗?其实,这也不只是我们这两个同学的错误,他这样做,我也这样做,你是不是也这样做,大家都是这么做,要错都错了,现在我们想想到底怎样做才是正确的。
我们现在就说说白色污染,到底什么是白色污染?就是人们对塑料垃圾污染环境的一种叫法。形象点说就是塑料袋满天飞,路边,地里,树上,到处都是得各种颜色的塑料袋,塑料盒、塑料杯、塑料碗等等,我们今天扔在这,有可能二百年后,我们的后代还能在这看见,因为它根本就不会在短时间内消失,它被分解至少要二百年的时间,比我们人活的时间长。我们现在都在抢我们祖先留下来的东西,比如瓷器,玉器,红木家具什么的,因为他们都是古董,是文物,具有非常高的价值,是祖先们给我们留下的宝贵财富。可是,当我们的后代看到我们给他们留下的东西,是漫山遍野的塑料袋,花花绿绿的,他们会怎么想呢?他们会向我们对待祖先时的那种感恩,感激吗?我们现在是前人栽树,后人乘凉,到他们那时就成了前人作孽,后人还债了。
关于"白色污染"的危害,除了让我们看着闹心外,它们本身还难以降解,给我们带来各种长期的环境问题,不论它放在什么地方都是危害,主要包括以下几个方面:
1.放在餐桌上,危害人体健康。我们现在用来装食物的超薄塑料袋一般是聚氯乙烯塑料,那里面残留有氯乙烯单体。当人们接触氯乙烯后,就会出现手腕、手指浮肿,皮肤硬化等症状,还可能出现脾肿大、肝损伤等症。
2.放在自然界,污染城乡空气。白色污染是一种成分复杂的垃圾混合物。在运输和露天堆放过程中,有机物分解产生恶臭,并向大气释放出大量的氨、硫化物等污染物,其中含有机挥发气体达100多种,这些释放物中含有许多致癌、致畸物。特别是塑料膜与袋、一次性发泡塑料屑和粉尘随风飞扬形成多种致病害的空气污染。另外,如采用焚烧方法,会产生大量的有毒有害气体,破坏大气环境,其中有一种叫二恶英的化合物,毒性极大,即使在摄入很小量的情况下,也能使鸟类和鱼类出现畸形和死亡,对生态环境造成破坏,同时对人也有很大危害。(污染我们人类的空气,影响我们的正常呼吸。)
3.放在自然界,危及动物安全。散落在江河湖海及田野的废塑料袋膜与发泡碎片被动物及水生物误食,会导致生病、死亡。北京动物园有长颈鹿误食塑料袋致病,国宝大熊猫因误食塑料袋致死的事也有发生。(动物吃了动物死。)
4.放在自然界,污染水体。白色垃圾中的有害成分易经雨水冲入地面水体,在垃圾堆放或填坑过程中还会产生大量的酸性和碱性有机污染物,同时将垃圾中的重金属溶解出来。垃圾直接弃入河流、湖泊或海洋,则会引起更严重的污染。另外,填埋作业仍是我国处理城市垃圾的一个主要方法。由于塑料膜密度小、体积大,它能很快填满场地,降低填埋场地处理垃圾的能力;而白色垃圾中的细菌、病毒等有害物质很容易渗入地下,污染地下水,危及周围环境。(污染我们的饮用水,占用较大的垃圾场)
5.放在田地里,使土壤环境恶化,影响农作物生长。你们说,这样的一个塑料袋值多少钱?不值一分钱,对吗?如果值的话收破烂的就该收走了,可是,它具体值多少钱呢?我说是两块钱,你们信吗?据调查,每一亩地里如果有30000个塑料袋,那亩地会减产百分之三十,就那种玉米的地说吧,现在亩产约1000斤,减产百分之三十,就是三百斤,大约三百块钱,二百年就是60000块钱,每个塑料袋让我们少收益了两块钱,是不是值两元呀?作为垃圾的话,它的正面价值不大,但是它的反面价值却很高。(抢我们的钱)
那我们现在的做法为什么不能消灭白色污染呢?因为,这个塑料袋污染环境吧,我们有限塑令,少用了。这个污染环境吗?同样污染,我们管它了吗?如果你去超市转转,看看超市里的商品有多少种是用塑料包装的,你们会得到这样的结果,超市里的上千种食品,竟然没有一种不是用塑料袋包装的,这么多的塑料袋包装,我们又不能吃,也没有其他的用,只能扔到垃圾桶里,用来污染环境。尽管那些东西都是厂家做的,和我们一点关系都没有,厂家可以少用或不用塑料包装。可是如果我们是厂家,我们能不用塑料包装吗?没有包装的东西不卫生,肯定没人要。包装必须要有,和其他的包装方式比起来,塑料包装非常强势:轻便,卫生,简单,方便,容易操作,价格便宜,所以即便我们是厂家,也会采用这种包装。厂家生产产品就是为了满足消费者的需求,除非我们没有需求了,厂家自然也就没有生产了,应用塑料包装也是为了迎合我们的需要,所以污染环境的是我们每一个人,只要我们活着,即便是环保工人,他们本身也在污染环境。那我们怎样才能不污染环境呢?没办法,我们只要活着就会污染环境。问题严重了,好像进入了死胡同,怎么办?
消灭白色污染的方法是在我们的生活中不产生白色污染,把它消灭在未产生之前,才是最好的办法。就像林肯说的,消灭敌人的办法是让所有人成为自己的朋友。
我们从新思考这个问题,这是什么"垃圾",停,大家再想想,这是什么:"萨其马"。这个呢?外面的"塑料包装",现在呢?"塑料包装",对,它什么时候会变成垃圾,在我们扔到垃圾桶之后才叫垃圾,现在他们脏吗?"不脏"对,我们可不可以不把他们变成垃圾,依然叫它们塑料包装,可以,需要我们怎么做,不把他们放进垃圾桶里就可以了,那把他们放到什么地方去呢?我从哪里拿出来的',这个塑料袋里,那好吧,还放回去。现在这个塑料袋放哪里,放在我的书包里。同样道理,你们也把自己吃完东西剩下的塑料袋收集起来放在书包里,带到学校,放到我们准备的废旧塑料收集箱,然后我们收集起来,给他们来个二次利用,变成我们需要的其他东西,它们还有可能跑到自然界里去吗?如果我们廊坊的中小学生都这样做,我们廊坊还有白色污染吗?那样的话,我们的城市就是全中国第一个消灭了白色污染的城市,我们是不是就太帅了?现在我们就行动起来,用我们的力量,为我们市其他学校的中小学生做榜样,让他们向我们学习,轻轻松松,简简单单的保护环境,消灭白色污染,大家觉得好不好?为我们自己的环保爱心行动鼓鼓掌。大家能坚持下来吗?能,好的,那我们就一起为我们地球的绿水蓝天努力吧。
最后,我给大家准备了一份礼物,现在是见证奇迹的时刻,"某某学校师生爱地球"。如果我们坚持下去,我们肯定会消灭掉白色污染,那会是我们真正见证奇迹的时刻。谢谢。
污染空气的演讲稿篇6
1. power generation
siting fossil fuel power stations in mainly rural areas and distributing the pollution produced more evenly via tall chimneys has resulted in improved urban air quality though they still remain a major source of pollution mainly sulphur dioxide and nitrogen oxides.
better dispersion of pollutants emitted by tall chimneys leads to better dilution in the air and thus lower local concentrations of pollutants. this has however led to pollution being dispersed more widely and to transboundary air pollution.
2. other industry and waste disposal
although fossil fuel power plants are the major source of industrial air pollution in many countries all industry and many businesses large and small can be significant local sources of a wide range of air pollutants.
all waste has the potential to affect the environment adversely by contaminating the air soil or water. poorly managed waste disposal sites (landfill or incineration) can also pose a danger to public health through all these routes.
3. road transport
air pollution from motor vehicles has in many countries replaced coal smoke as the major cause for concern; and the continuing growth in vehicle use means that efforts to reduce emissions from individual vehicles are in danger of being overtaken by increases in the volume of traffic.
the air pollutants produced as a result of the use of motor vehicles present a two-stage problem: primary and secondary pollutants. primary pollutants produced by petrol-powered vehicles include carbon monoxide nitric oxide benzene particulate matter and lead. much of the lead emitted by vehicles burning leaded petrol emerges as particles. secondary pollutants produced as a result of the use of petrol-engined vehicles include nitrogen dioxide and ozone.
4. domestic sources
as temperatures across the region plummeted domestic burning of coal across northern china becomes the primary source of air pollution. other important domestic sources of air pollution are:
stoves and cookers produce carbon monoxide. if ventilation is inadequate or appliances poorly maintained co may accumulate in dangerous concentrations. nitrogen dioxide is also generated and concentrations in kitchens will usually exceed those outdoors when cookers are in use.
bonfires garden incinerators and barbecues can be a significant local smoke and odour nuisance. burning garden waste produces smoke especially if it is damp and smouldering rather than dry and blazing. the smoke contains co and other noxious and irritating compounds. problems may be caused for asthmatics bronchitis sufferers or those with heart conditions. even if the immediate health risk is small bonfires add to the general background level of air pollution.
5. agriculture
agricultural practices can also be a significant source of nuisance contributing both to local levels of air pollution and causing odour problems. the main sources of pollution are the burning of agricultural waste or of crops in the field and large intensive livestock units. depending on soil type and fertilisation the nitrogen in the dung and urine of grazing cattle contributes 20-40% of nitrous oxide emissions from agricultural land; methane is also emitted by cattle and other ruminants; nitrous oxide and methane are of course both greenhouse gases.
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