城市污染问题英语作文【合集20篇】

Industrial pollution is clearly one of the biggest contributors to our polluted landscapes, at least here in the west. There are plenty of causes of land pollution, from urban and industrial ones, to rural and agricultural sources.

But which kinds of land pollution are the most important? And what can we realistically do to help prevent more pollution?

This part of the site gives an overview of some of the most important causes of land pollution, including industrial pollution.

There are also some recommendations for helping avoid domestic land pollution incidents.

Click here for some good reading on industrial pollution and land pollution causes and solutions.

When I walk on the street, I found most people don’t obey the traffic rules, they just ignore the rules, when there are a lot of people go across the street, they just follow them. It is so dangerous, the accident is very easy to happen, the car will hit the people any time. For the safety, we should obey the traffic rules.

当我走在街上的时候，我发现很多人不遵守交通规则，他们忽视规则，当很多人过马路的时候，他们跟着人群。这是很危险的，很容易发生意外，车子会随时撞到人。出于安全问题，我们应该遵守交通规则。

The Surroundings in Cities

We have to admit that, comparatively speaking, our cities are not so clean and green as those in the developed countries. There are not adequate trees, lawns and flower-beds in such big cities as Beijing,Tianjin and Shanghai.

We should make our cities greener by planting more trees, grass and flowers. A green enviromnent can bring us pleasure, beauty and fresh air. Trees, lawns and flowers will make our cities more pleasing to both the eye and the mind, improve the weather conditions and provide fresh air, all of which will no doubt do us a lot of good.

I suggest that the whole city go all out every spring to plant new trees, build new lawns in and around the city, and everyone should take care of and protect the trees, lawns and flowers, and educate the children to love them. Then year after year, our cities will become greener, more beautiful and liveable.

[城市的环境英语作文

We cant live without water, but now the water was polluted. It is the biggest problem. It influences our daily life. So we should find a way to solve this problem. Water is important resources. In our daily life, we often leave the tap on after cleaning hands. Sometimes we often drop litter in the river. So the water was polluted by us. I think we could use a bottle of water two or three times. We have to turn off the tap after cleaning hands.

Lets try to form a good habit and save things around us. Lets do it from now on!

Water is very important to us. We cant live without water. But the drinking water is less and less. Because we waste a lot of water in our daily life. And some of us often throw rubbish into the rivers. So the rivers are polluted seriously.

Its our duty to save water, we must do something to save water. For example, we shouldnt pour waste water into the rivers and we should pick up litter around us.

If we dont save water, the last drop of water will be our tear.

Fish cant live without water. Plants cant live without water. People cant live without water, either. As you can see, the water is very important to us. But now drinking water is less and less. The water was polluted seriously.

So we would act quickly in order to save the water, But what must we do now? I think we can plant trees, clean the banks of the river, water the plants by using used water. Turn off the shower while we are washing hair. And we shouldnt drop litter into the river and so on.

Its our duty to try our best to protect and save water. And dont forget that if we dont save water, the last drop of water will be our tear.;

If we dont save water, the last drop of water will be our tear. What a frightful announcement!

Water is very important for people, animals and plants. Water is needed to many things in daily life, like taking a shower, drinking, washing clothes, making meals and so on. We cant live without water. But now water has become less and less because people waste water and pollute water. If we continue to do things like this, we shall destroy ourselves. So we should take action to improve the environment quickly. We shouldnt throw rubbish into the rivers. We should pay attention to environmental protection. We can use less water when we wash something. In a word, we should save water.

没有水我们无法生存,但是现在水被污染了。这是最大的问题。它影响我们的日常生活中。所以我们应该找到一个方法来解决这个问题。水是重要的资源。在我们的日常生活中,我们经常离开水龙头清洗后的手。有时我们经常在河里乱扔垃圾。所以我们的水被污染了。我认为我们可以用一瓶水两到三次。我们必须关掉水龙头后清洗双手。

让我们试着养成良好的习惯,节约我们周围的事情。让我们从现在开始吧!

水对我们是非常重要的。我们没有水是无法生存的。但是,饮用水越来越少。因为我们浪费大量的水在我们的日常生活中。和我们中的一些人经常把垃圾扔进河流。因此,河流污染严重。

节约用水是我们的责任,我们必须做些事情来节约用水。例如,我们不应该把废水倒进河流和周围我们应该捡起垃圾。

如果我们不节约用水,最后一滴水将是我们的眼泪。

鱼没有水是无法生存的。植物没有水是无法生存的。人没有水是无法生存的。正如您可以看到的,水对我们是非常重要的。但是现在饮用水越来越少。水被污染严重。

所以我们将迅速行动,以拯救水,但是现在我们必须做些什么?我认为我们可以植树,干净的河岸,通过用水浇灌植物。关掉淋浴当我们洗头发。我们不应该乱扔垃圾到河里,等等。

这是我们的职责尽力保护和节约用水。别忘了,如果我们不节约用水,最后一滴水将是我们的眼泪。

如果我们不节约用水,最后一滴水将是我们的眼泪。多么可怕的消息!

水对人们是非常重要的,动物和植物。水是需要很多东西在日常生活中,如洗澡、喝,洗衣服,做饭等等。我们没有水是无法生存的。但是现在变得越来越少,因为人们浪费水,污染水。如果我们继续这样做,我们将毁灭我们自己。所以我们应该迅速采取行动来改善环境。我们不应该把垃圾扔进河流。我们应该注意环境保护。我们可以用更少的水当我们洗东西。总之,我们应该节约用水。

Pollution around us

In recent years our life is becoming better and better. But our environment is becoming worse and worse. Its very bad for our life. Now many people have air-conditioners and cars, they produce (give off ) waste gas. More and more trees are being cut down. There are so much sand on the earth (leaving only sand ) . We often see factories pour waste into rivers or lakes. Water in the river is quite dirty. We havent enough clean water to drink in cities. Now we are in danger. Its very necessary and important to protect the environment well. I think if everyone tries his best to protect the environment, the world will become much more beautiful , and our life will be better and better .

我们周围的污染

近年来我们的生活越来越好。但是，我们的环境越来越糟。它对我们的生活很糟糕。现在很多人都有空调和汽车，他们生产的（出）废气。越来越多的树被砍伐。有那么多的沙子在地球（只留下沙）。我们经常看到工厂把废水倒入河流或湖泊。河里的水很脏。我们没有足够的干净的水的城市。现在我们有危险。这是非常必要和重要的保护好环境。我想，如果每个人都尽自己最大的努力去保护环境，世界将变得更加美丽，我们的生活会越来越好。

导语：空气污染是当今世界的主要问题之一。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern industrial nations.

Automobile， trains， planes and busses need energy， too. Nearly all of this energy is produced by burning fuels. The burning produces wastes， some of which remain in the air， causing air pollution.

Scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities.

They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime， many power plants are being modernized to give off less polluted material.

Also， engineers try to design and locate new power plants to do minimum damage to the environment. However， it may be that we still have a long way to go before we have a "clean" world. Nearly all of the countries are trying hard to prevent and control air pollution.

There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.

【参考译文】

空气污染是当今世界的主要问题之一。在现代化工业国家中，办工厂需要大量的能量。

汽车、火车、飞机和公共汽车需要能量，太。几乎所有这些能量都是由燃烧的燃料产生的。燃烧产生的废物，其中一些留在空气中，造成空气污染。

科学家们正在寻找办法来阻止空气污染，尤其是在大工业区和人口稠密的城市。

他们正在研究新的发电方式，这种方法对环境的破坏性更小。与此同时，许多发电厂正在现代化，以减少污染的物质。

同样，工程师们也正在努力设计新的发电厂，确定新的建厂地点，把对环境的危害减少到最低限度。然而，在我们拥有一个“干净”的世界之前，我们还有很长的路要走。几乎所有的国家都在努力防止和控制空气污染。

环境保护主义者的任务似乎没有尽头。人们会不断找到控制污染的新方法。

Nowadays, a lot of environment has been seriously polluted. Now, look at the polluted environment.

The river

I was walking in the park, smell a smelly fish, the pedestrians on the road also cover your nose in one hand, with his other hand fan with bad smell, I cant stand, hurriedly to speed up the pace, I looked down and turned out to be a lot of dead fish in the river, is this why? I puzzled, and then takes a look, want to come out, must be the river has been polluted, I saw the river there are many junk "gather" talk loud talking and laughing together, so I must be the fish cant stand it, to "rest" in this harsh environment, the main or because people litter, let the water turbidity, polluted, alas! Looking at the already clear water of the river is now dark, the original lively and disorderly fish are also motionless, I have a feeling of not coming out!

air

It is a sunny day, I a person walking in the street, the road cars, buses, motorcycles, the horn is to me a son to chung, car and more up, however, pedestrians less, because the way the air became more pungent, car tail industrial waste gas, contain a variety of toxic substances, in the sunshine, will produce many harmful gases, respiratory tract have a lot of harm to human body, high incidence of respiratory disease. Why do people have bicycles? It is one of the best tools for overcoming heart disease, and cycling can also help prevent high blood pressure, sometimes more than medicine, and can prevent weight gain, hardening of the arteries and keeping the bones in half. And bikes dont emit waste gas and are healthy. Doesnt this kill two birds with one stone? So I urge people not to drive a bike only, for the whole earth more color, one less dirty!

Here, I appeal to everyone to love our home -- earth, we have only one earth, you do not love her how do she love you? So let us work together to make our home more beautiful and rich. And everyone thrifty, polite and hygienic, so that the whole earth will be more beautiful and clean! I believe that after listening to my appeal, we will all act together to make our family more beautiful, wont we?

[英语作文环境污染

Better City ，Better life

优质的城市，优质的生活

Environmental problem has become an important and crucial issue. The abysmal lack of fresh water, the desertification, the green house effect and the extinction of creatures are the main issues in environment.

环境问题已成为一个重要和关键的问题。恶化的淡水缺乏，沙漠化，温室效应和生物灭绝是环境的主要问题。

With each second that passes, a water crisis takes another step closer to reality. Consumption of fresh water has tripled since 1950; and fresh water is becoming a very scarce resource. Agricultural practices, mainly irrigation, account for 67% of world water consumption. Over one billion people worldwide dont have access to clean drinking water. So it is incumbent upon all to respect every drop of water and avoid the generation of waste.

随着每一秒的过去，水危机用其他的方法去接近现实。新鲜水用量自1950年以来已经翻了两番;和淡水已成为一个非常稀缺的资源。农业实践，主要是灌溉，为世界用水量67％以上。全世界十几亿人无法获得干净的饮用水。因此，呼吁所有有责任尊重每一滴水，避免废物的产生。

The soil under our feet is also getting away from us. Removal of the natural vegetation leaves extensive tracts of land devoid of a plant cover and susceptible to wind and water erosion. Finally, desertification is accomplished. Four specific activities have been identified as major contributors to the desertification processes: over-cultivation, overgrazing, firewood gathering, and over-irrigation. The extreme seriousness of desertification results from the great difficulty in reversing or even slowing the process. Once the soil has been removed by erosion, only the passage of centuries or millennia will enable new soil to form. The tree planting is a dominant contributor to the development of the disaster. Another effective measure is to restrain the utilization of the land and to exploit the new technology to improve the productiveness of the arable land.

在我们脚下的土地也越来越远离我们。自然植被因为缺乏土地植被和易受风蚀和水蚀而死亡。最后，荒漠化完成。四项具体活动已被确定为对荒漠化的主要导致的过程：过度农垦，过度放牧，薪柴采集和过度灌溉。荒漠化的极端严重性，导致减缓甚至逆转这一过程非常困难。一旦土壤被侵蚀，只有几百年或几千年的才能抵御，使新的土壤形成。主要控制灾情发展都归功于植树。另一个是抑制土地利用率和利用新科技来提高耕地生产率的有效措施。

Our globe is warming up. GHG gases are the main contributor. Carbon dioxide emissions to air are almost exclusively associated with the conversion of energy carriers like natural gas, crude oil, and so forth. Optimization of energy efficiency and, thus, reduction of CO2-emissions and reduction of other GHG emissions contributed from production processes may be the first to be

discussed. And the mitigation of carbon emissions through the development of alternative projects such as solar or wind energy or reforestation, represents one way of managing a carbon footprint.

我们的地球正在变暖了。温室气体是主要的来源。二氧化碳排放到空气中几乎都是在像天然气，原油等能源载体的转换有关。能源效率，因此优化，二氧化碳的排放和其他温室气体减排贡献减少，生产工艺，第一次将要被讨论。发展减缓碳排放量，如通过太阳能或风能或重新造林的替代项目，代表一个管理方式的碳足迹。

The greed of human beings is using up the plants and animals. Tigers once roamed over most of Asia and we can only see them in the zoo. Whales are once the dominant species in the ocean and now they have got out of our sight because of over-harvesting. We must stop harvesting natural resources to excess and bring them back from the brink of extinction. If we take from the wild we must do it in ways that allow natural populations to recover and last long into the future.

人类的贪婪是使用了植物和动物。猛虎组织一度横跨了亚洲大部分地区，我们只能在动物园里看到它们。鲸是海洋中的一次优势种，现在他们现在已经离开了我们的视线，因为过度捕捞。我们必须停止过度采伐天然资源，从他们来的地方，带来了灭绝的边缘。如果我们在野外，我们必须采取的这样的方式使自然种群的恢复和持续，一直持续到未来很长的时间里。

The earth is not the human’s planet, it is our planet. It’s time to take measures to improve the environment for both humans and other creatures. A safe, clean and sustainable environment depends on more than lip service. Both the government and individuals have the responsibility to minimize direct impacts against the environment. All of us can start planting plants in our home, limiting the use of private cars and using public transportations. And the government should impose necessary standards upon the whole society. The beautiful and vigorous earth will come back soon.

地球不是人类的星球，它是我们的星球。现在是时候应该采取措施改善人类和其他生物的环境了。一个安全，清洁和可持续的环境不是取决于纸上谈兵。无论是政府和个人都有责任，尽量减少对环境的直接影响。我们都可以在我们的家开始种植植物，限制私家车的使用和使用公共交通。政府应强加给整个社会所必需的标准。美丽和活力地球将会很快回来。

Pollution: An Increasing Concern in China It is reported that ten big cities in China are being ranked among the top twenty cities with the highest pollution index in the world. This means it is high time we did something to bring the situation under control.Many factors are contributing to the deteriorating situation: industrial wastes pumped into the air, the lakes and rivers; a increasing number of automobiles crowding into the streets; the widespread use of plastic bags etc. To my view, stiffer laws and regulations must be implemented to check pollution. Industries that release wastes without permission should be heavily fined. Cars should be equipped to minimize the exhaust they release into the air. And the use of plastic bags and disposable meal boxes should be banned. Whats more, the media should play an important role in implanting a sense of environmental consciousness into peoples mind. If everybody works toward a common goal of making the environment better, we can create a cleaner and lovelier world for us and for the coming generation.

[环境污染英语作文参考

In this picture a man rudely opens a garbage can and violently throws all kinds of waste into it. however, the box is not an ordinary trash can, but is, as a matter of fact, the earth. it is where survive, breed, and prosper. but as the drawing indicates, earth does not receive an equal repayment. quite the contrary, one of the biggest "gifts" humans return to earth is an unbelievable amount of trash.the picture purposefully points out a kind of pollution that arouses little public attention, that is, garbage. the past century has witnessed an unprecedented increase in garbage output, most of it technological products that are difficult to be decomposed through natural processes, such as plastics and glass. furthermore, a recent report released that several major chinese cities are already surrounded by circles of trash in the suburban areas, polluting air, water, and earth.

Hence, the issue of waste pollution needs to be addressed as one of the priorities that demand social efforts. only through a holistic system of trash disposal can this problem be fully solved. moreover, we should advocate a more frugal lifestyle so as to reduce the growing scale of waste pollution.

[大学英语作文环境污染

导语：共享单车在退出以来就给人们出行提供了极大的便利，但是在这使用过程中也出现了很多问题。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

It has been billed as a hi-tech bike-sharing boom that entrepreneurs hope will make them rich while simultaneously transforming Chinas traffic-clogged cities.

But, occasionally, dreams can turn sour.

In the southern Chinese city of Shenzhen, more than 500 bicycles for hire have been found dumped in huge piles on the streets, according to reports.

Pictures showed jumbled stacks of vehicles nearly three metres high, with handlebars, baskets and other parts scattered on the ground.

City streets around the country have seen an explosion of the colourful bikes that users can rent on demand with a smartphone app and then park wherever they choose.

The sharing economy is taking off in China, where ride-sharing and Airbnb are increasingly commonplace.

From Shanghai to Sichuan province, bike-sharing schemes are being rolled out in an effort to slash congestion and air pollution by putting a country once known as the "Kingdom of Bicycles" back on two wheels.

Companies such as Ofo and Mobike, with their rival fleets of bumblebee yellow and fluorescent orange bikes, have been locked in a cut-throat battle for customers.

But problems have arisen when clients have abandoned their cycles.

"Some people these days just have really bad character," a man named He, who lives near where the stacks appeared, told the Southern Metropolis Daily.

"When theyre done using (the bike) they just throw it away somewhere, because theyve already paid."

In the past few days he witnessed people demolishing the bikes before discarding them on the side of the road, he said.

Residents told the paper that bikes had been piling up over the past week, either parked haphazardly by careless users or stacked by local security guards trying to clear narrow residential alleys and footpaths.

Zhuang Chuangyu, a representative at Shenzhens municipal peoples congress, said the city needed to step up regulation of the bike-sharing industry in order to improve traffic conditions and safety standards, especially since schoolchildren often used the bikes.

In 1980, almost 63% of commuters cycled to work, the Beijing Morning Post reported in 2015, citing government data. But by 2000 that number had plummeted to 38% and today it stands at less than 12%.

Car use, meanwhile, has rocketed. In 2010 China overtook the US to become the worlds largest car market, with 13.5m vehicles sold in just 12 months.

【参考译文】

这已被誉为高科技的自行车共享繁荣，企业家希望将使他们富裕的同时，把中国的交通堵塞的城市。

但是，偶尔，梦想可以变酸。

据报道，在中国南部城市深圳，有超过500辆出租自行车被丢弃在大街上。

图片显示车辆杂乱的堆高近三米，与车把，篮子和其他零件散落一地。

全国各地的城市街道都看到了五彩缤纷的自行车爆炸，用户可以按需智能手机应用程序租，然后公园无论他们选择。

共享经济是在中国起飞，在骑共享和Airbnb是越来越普遍。

从上海到四川省，自行车共享计划正在铺开，旨在通过将一个曾经被称为“自行车王国”的国家拖回两个轮子来减少拥挤和空气污染。

公司如G和Mobike，与他们的对手大黄蜂的黄色和橙色荧光自行车车队，被锁定在一个客户的割喉战。

但问题出现时，客户已经放弃了他们的周期。

“有些人这几天真的很坏，”一个叫他，他住在附近的栈出现，告诉南方都市报。

“当他们使用(自行车)，他们只是把它扔在某处，因为他们已经支付。”

他说，在过去的几天里，他亲眼目睹人们在把自行车扔到路边的时候拆除自行车。

居民告诉记者，自行车被堆放在过去的一周里，要么停地由粗心的用户或由当地保安试图明确狭窄的胡同和人行道堆放。

庄创宇，深圳市人大代表，需要加快共享行业为了改善交通条件和安全标准的自行车调节城市说，尤其是学生经常使用的自行车。

1980日，北京晨报报道，近63%的上班族骑车上班，引用政府数据。但是到了2000，这个数字已经降到了38%，而今天却还不到12%。

与此同时，汽车的使用量猛增。2010中国取代美国成为世界最大的汽车市场，与13.5m车辆在短短12个月内出售。

我国的城市河流和湖泊污染情况是非常严重的,城市河流水有不同程度的富营养化问题。以下是小编给大家整理的形势与政策论文：城市水环境的问题探讨的内容，欢迎大家查看。

摘要: 随着经济快速发展，城市生态形势压力也与日俱增，水环境问题已成为制约社会发展的大问题，环保基础设施建设严重落后，城市生活污染物未得到有效控制，工业污染源未得到严格治理，农业污染日益突出，部分河段水质受污染严重，河水发黑发臭，完全失去水质功能。本文主要对城市水环境治理及污染防治对策进行了分析探讨。

关键词：城市规划;水环境质量;污染防治;对策

城市生态环境是城市宜居水平评价和城市经济发展的重要因素。作为城市生态环境的重要组成部分，城市水环境对生态环境的治理和改善有着重要的影响。受传统经济发展理念的影响，我国城市水环境污染情况不容乐观。而且在城市扩建过程中还造成了大量周边湿地的消失，造成了城市生态环境、水环境的进一步恶化。针对这样的情况，我国近年来加大了城市生态环境治理力度。从城市规划与发展的角度出发，恢复城市周边湿地环境、改善城市水环境与生态环境。

一、城市水环境的基本特点

1、城市用水的特点

生活用水和生产用水是城市用水的主要类型，由于城市人员密集、工业化生产程度高，所以，城市用水需要较高的质量、较大的供水量、稳定的供给，这对城市采水、供水和用水来说有着不同于农村的特点。

2、城市用水的依赖性强

城市由于用水量大、供水要求高，所以，单纯依靠城市区域的供给和开采往往难于满足城市发展的需要，因此，大众城市往往需要从城区周边或外地调水来满足城市的用水需要，“引滦入津”、“南水北调”就是这样的举措。

3、城市水环境脆弱

在我国北方，城市生活和生产用水大都在简单处理或未经处理就直接排放到环境之中，在日积月累的大量污染的影响下，城市水环境受到了严重破坏，并且这一现象有蔓延和恶化的趋势，造成水环境的脆弱和生态的破坏，影响城市深入地发展。

4、城市地下水环境恶化

城市地下水环境恶化来源有两个，一是，城市生产和生活中大量污染源渗入地下，造成对地下水资源和水环境的破坏;二是，城市地表硬化导致城市地面下渗量的减少，在大量开采地下水的同时，没有必要的补充，出现水环境的恶化。

二、城市水环境综合治理方法

1、以人为本，科学发展

把维护广大人民群众的根本利益作为第一点，把群众最关心、最直接和现实的水环境保护问题为重点，转变发展观念，重视生态文明建设，加快建设资源节约和环境友好社会，走科学发展道路。

2、优先保护饮用水源

合格的安全饮用水源是人民生活的必需品，水环境治理应突出重点，优先保护饮用水源，确保群众饮水安全。

3、强化节能减排、效益原则

与区县减排工作挂钩，把COD削减量考核指标纳入到区县水环境治理目标体系中，明确各区县污水处理率、污水处理厂运行负荷率等量化指标。切实保障三个达标，即污水处理率必须达标、污水处理厂的运行负荷率必须达标、COD的减排必须达标。合理安排资金，对节能减排效果明显，有一定经济基础，技术条件成熟，符合国家和行业产业政策的项目优先考虑。

4、治本方针

突出截污治污。河道沿线村镇、企业密集，污染来源复杂。为此，河道治理将坚持“先截污、后清淤、先治理、后换水”的原则，周密排查河道沿线污染来源，大力实施清淤、截污、生态护坡、河岸绿化等措施，加强河道水体自净和生态修复功能;在突出截污治理的同时，各区县还将坚持污水处理厂、配套管网同步建设，大力提升现有污水处理厂运行负荷率，妥善解决污水出路，切实提高河道水环境质量。

5、加强协作，落实责任

市水务局于去年成立了河道水环境考核办公室，将清水工程已治理河道纳入考核范围，各区县按照属地管理原则在本辖区内建立水环境管理机构和相关管理机制，有效巩固水环境治理成果。此外，目前市政府已正式批准本市河道水环境实施“河长制”管理意见，即将公布全市主要河道“河长”名单，构建完善的河道水环境管理长效机制，为今后本市水环境由加强治理向强化管理转变打好基础。

三、城市河流水防治和改善技术的应用

1、底泥疏浚和河床微生态系统修复

在河流洪水、蓄洪功能上,底泥疏浚主要体现在河流利用水面变化增加行洪、蓄洪能力。作为沉积物沉积,有的湖泊水的深度可以被调整,从而减少其调节和存储功能。增加城市河湖疏浚河道水容量后,以确保顺利排出这些河流洪水,保障人民群众的生命和财产安全,也避免了洪涝灾害。底泥疏浚是水环境综合整治的一项重要措施,滇池、巢湖、太湖等水环境综合整治已被广泛使用。可见,合理的疏浚清除污染物,对于生态系统的恢复和重建具有非常重要的作用。

2、人工增氧技术

人工增氧技术是基于城市河流水污染后缺氧的现象,人工的向水体中注入空气或氧气,从而加速水体复氧的进程,提高水体的溶解氧水平,恢复和提高在水中好氧微生物的活力,使河流水的污染物净化,从而改善河流的水质。河流氧气一般使用固定和移动站充氧平台两种形式。河道人工增氧技术的应用,能够使得水质不同时期达到消除黑臭、减少水体污染负荷、促进河流生态系统恢复的目的。

3、调水引流水质改善技术

贯穿城市的内河河网水系,因为控制结构的限制,使得河流水不能够连接到外部的水体,造成水处于静止的状态,当天气炎热的时候,溶解在水中的氧气浓度就会降低,容易导致水质变坏。通过改进水域水动力条件,提高水体污染物的稀释能力,增强局部水体的自净能力,许多城市在水资源利用和部署中,通过跨流域调水工程,解决空间分布不均的问题。

4、植物修复技术

对于河道河流自然恢复应采取生态化措施,主要是通过恢复河岸植被、恢复天然湿地,在河岸种植芦苇、浮萍、睡莲、水生植物和其他湿地植物,以提高水体的净化能力。种植水生植物的城市河流水,一方面能够通过植物的根系的吸收,从而降低和遏制富营养化趋势;另一方面通过种植水生植物,可以也起到美化水体环境,提高城市的景观的效果。

5、生物净化技术

生物净化技术是充分利用天然水体自净的功能,采用人工措施,创造更有利的环境有利于微生物的生长和繁殖,并培养出大量的微生物从而增强水体净化能力,以提高纳污水体氧化降解有机物能力的一种净化方法。目前国内外最常用的生物净化技术是曝气技术、生物膜技术与投菌技术。生物净化技术,其成本低,对环境的影响小,能够有效降解污染物,是水体污染处理的最佳选择之一。生物净化技术及产品的开发,特别是分解菌株的培养也将被筛选到河流水污染控制技术之中,是未来城市水污染防治和治理的发展趋势。将具有特殊分解能力的菌种添加到河边,能够将水体中有毒有害物质分解为无毒无害的物质,从而加速有毒物质的分解、转化,不仅可以提高河流的净化能力,而且也实现了河流的生态修复。生物产品的运用将成为人工增氧、底泥疏浚等现有防治技术的有益补充。

四、结束语

综上所述，我国的城市河流和湖泊污染情况是非常严重的,城市河流水有不同程度的富营养化问题。目前,在城市河流污染环境下,需要完善城市管线网络,并建设污水处理厂,具体的水污染防治技术措施有:底泥疏浚、人工增加氧气、引水排水水质改善、植物修复、湿地水净化技术等河流强化净化技术。能够应对不同的城市的污水状况,使得城市河流水污染的情况得到了有效的控制,促进城市河流的健康发展。

参考文献

[1]曹洲榕，禹华谦.城市水环境问题及对策探讨[J].四川建筑.2011(01)

[2]高婷，于航宇.浅析我国水环境现状及城市污水的处理[J].中国新技术新产品.2011(16)

[3]陈邵鹏，顾海东.立足流域浅谈城市水环境规划建设[J].中国科技信息.2012(03)

Some people like living in the city because city life has many advantages. They think there are more job opportunities in cities， life there is more colorful and meaningful than that in the country， and there are more modern conveniences in cities for people to enjoy.

But some other people prefer to live in the countryside. They say life in the countryside is closer to nature and better for their health， life there is quieter and that country people are more honest than city people.

I would like to live in a city when I am young to earn enough money and I live in the countryside when I am old for having a quite life.

Today,my topic is environmental pollution. As the world get more and more modern, pollution presents a serious problem. More people make more waste. All this waste is polluting our environment. Pollution has a bad influence on our life. There are still many problems of environmental protection in recent years. The most serious problems is the pollution of air, water and soil.

Air pollution is one of the major problems of the modern world. Because some waste gases is coming from factories, cars, power plants put out.The polluted air is harm to people’s health.

The polluted water causes diseases and death. With the development of modern agriculture and industry, more and more waste water is being poured into rivers. It has caused serious pollution. The river is becoming so dirty that no living water pollution is one of the major problems of the modern world.There are nothings can live in it. The river is giving off a terrible smell.

Soil pollution was very serious. The garbage has become an important problem in major cities, ten million tons of garbage every day, a lot of garbage is not incineration and corruption, such as plastic, rubber and so on.

In conclusion, the environmental pollution problem is becoming more and more serious, affecting every aspect of our lives. For our health, we should protect our living environment.

It has been such a long time for Chinese people to carry out the family plan, so most families only have one child. But now the government has loosen the one-child policy, more and more families have the right to raise the second child. In my opinion, having the second child has many advantages.

中国人实行计划生育已经有很长一段时间了，因此大部分家庭只有一个孩子。但是如今政府放松了一胎政策，越来越多的家庭有权利养育第二个孩子。在我看来，拥有第二个孩子很多好处。

First, it is good for the only child to have a sister or brother, so that the child can learn to share things. The parents are easily to focus their all attention to the only child, they want to give all the things he wants. But in the long run, they don’t realize they have spoiled their child to be an emperor. Selfishness can be found on the only child, if he has a partner, then he will realize the need to share things with others. What’s more, the parents can distract their attention, so they won’t spoil their kids.

第一，对于独生子女来说，有个兄弟姐妹是好的，这样孩子就能学会分享东西。父母很容易会把他们的注意力集中在独生子女身上，他们想要给予孩子所要的一切。但是长期下去，他们没有意识到已经把孩子宠溺成了一个皇帝。独生子女很容易自私，如何他有一个伙伴，就会和别人分享东西的需要。而且，父母也会分散他们的注意力，这样就不会宠溺孩子。

Second, since in Chinese tradition the old people would not like to spend their later life in the nursing house, two children can share the burden of taking care of the parents and support them when they grow old. Those only children would be exhausted then while they have their own family to take care.

第二，由于在中国的传统里老年人们不愿意在养老院安度晚年，两个孩子也能分担一下照顾和赡养年老父母的压力。而那些独生子女们还要照顾自己的家庭，会力不从心。

Third, the more kids in the family, the happier the family will be. Watching the children play and fight is a kind of fun for the parents. The lively phenomenon makes people feel happy.

第三，家中越多的孩子，家庭就会更加的幸福。看着孩子们玩耍和吵架，对父母来说也是一种乐趣。热闹的环境让人感到开心。

Depending on personal experience, personality type and emotional concern, we find that some people hold the idea of living in the country, while others prefer living in the city. In my opinion, I prefer the city life, though it has advantages and disadvantages.

First of all, city life is very colorful. City is the center of the surrounding area. So, it is also the most booming place having the best things. There are many great things and wonderful activities in the city, while there isn’t in the country. For example, there are KFC, wonderful shopping mall, delicious food from various places, dancing club, different kinds of activities and so on. We can also learn the culture from all the countries. Despite city life is so wonderful, it still has many disadvantages. Nowadays, with the improvement of people’s living standard, people have more cars and more people come to city, and then the city becomes more and more crowd. As a result, traffic jam emerges, which makes great inconvenience for people to go out. What’s worse, the air pollution becomes serious day by day, which is bad for people’s health.

To sum up, every coin has two sides. Living in the city also has good side and bad aspect. Whether like living in city or not depends on individual thinking. As myself, I like living in city though I know the disadvantage of living in city.

导语：现如今我们的生活中有太多的汽车，除了拥挤，事故和快速的燃料消耗，汽车是造成大城市空气污染的主要原因。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Too many cars have created a lot of serious problems in our world. Besides congestion, accidents and fast fuel consumption,cars are responsible for a good part of air pollution in big cities. All the time, they are pumping huge amounts of waste gases into the atmosphere. These gases are very harmful, causing disease and even death. Last winter, car fumes formed heavy smog over Beijing, making the sky gloomy for weeks and deteriorating peoples health.

One possible solution is to design and develop clean cars and clean fuels. In Tsinghua University, campus buses are driven by electricity. In Beijing some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as the petrol. But it may take decades for the new models of clean cars to completely replace the traditional ones.

Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not private cars. And the total number of cars in big cities will reduce greatly.

On the whole, the elimination of air pollution needs the co-efforts from the government, the public and the environments. This problem will be solved only with the help of science and technology.

【参考译文】

太多的汽车在我们的世界里制造了许多严重的问题。除了拥挤，事故和快速的燃料消耗，汽车是造成大城市空气污染的主要原因。他们一直在向大气中排放大量的废气。这些气体是非常有害的，导致疾病甚至死亡。去年冬天，汽车烟雾在北京上空形成了浓重的烟雾，使天空阴沉了数周，恶化了人们的健康状况。

一种可能的解决方案是设计和开发清洁汽车和清洁燃料。在清华大学，校园巴士是由电力驱动的。在北京，一些公共巴士开始使用天然气，这并没有像汽油那样排放二氧化碳。但清洁汽车的新模式可能需要几十年才能完全取代传统汽车。

另一个解决办法是发展现代公共交通系统，限制私家车的使用。如果汽油价格不断上涨，公共交通工具的效率和足够的方便，大多数人不会私家车。大城市的汽车总数将大大减少。

总的来说，消除空气污染需要政府、公众和环境的共同努力。这个问题只有在科学技术的帮助下才能得到解决。

In the past few decades, our Earth has changed a lot, but to the bad

direction. Among these changes, the air pollutions resulting from a huge number

of automobiles and coal-burning is almost the severest. The severe air pollution

alarms humans of the heavy load we have exerted on Earth by our insatiable

production and usage of automobiles. However, with the deepening of

urbanization, more cars are needed, which will make the air pollution worse.

Therefore, the following actions should be taken. First, we should apply the

most cutting-edge technologies in order to adopt new forms of energy as

substitutes for fossil fuels. Second, try hard to develop possible

transportation means, which are enviromental friendly. So that the citizens can

reduce the dependence on cars. In short, our humans should take responsibilities

for the air pollution and have to find ways to solve this problem.

导语：越来越多的车给我们的生活带来了极大的危害，下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

越来越多汽车进入我们的家庭生活，改善了我们的生活，但同时也带来了很多问题，如塞车和车祸，给家庭和社会带来极大的危害。作为中学生，我们应该怎样做呢?

请写一篇有关交通安全的短文(80字左右)

内容包含：

遵守交通规则，如走人行道/过斑马线。

别在街道上或马路上玩耍和踢球。

劝父母不能酒后驾车。

你可以适当增加内容，让短文通顺，过渡自然。

参考词汇：sidewalk 人行道 zebra-crossing 斑马线

注：第一段已给出，不计入总数

★ 范文

With more and more cars coming into our families, we are happy that it has greatly improved our life. But unluckily, it has also brought many problems, such as heavy traffic and traffic accidents.

Traffic safety is everybodys business. We must obey the rules. For example, we must walk on sidewalks , when we cross zebra – crossing, stop and look right and left, and then go across fast. Don’t play football on the road .we can tell our parents not to drink before they drive, not to run through red lights, not to talk and laugh while driving etc.

We can say cars are coming into our life, but only when everybody thinks traffic safety is everybodys business can we be safe driving on roads and walking on sidewalks.

【汉语翻译】

随着越来越多的汽车进入我们的家庭，我们很高兴它极大地改善了我们的生活。但不幸的是，它也带来了许多问题，如交通拥挤和交通事故。

交通安全人人有责。我们必须遵守规定!例如，我们必须走在人行道上，穿过斑马线，停下来左右看，然后过得很快。不要在马路上踢足球，我们可以告诉我们的父母在开车之前不要喝酒，不要闯红灯，不要在开车时说话和大笑。

我们可以说汽车正走进我们的生活，但只有当每个人都认为交通安全是每个人的事时，我们才能安全地在路上开车和在人行道上行走。

How to save environment? I think we should do the followings: First, it’s best to ride a bike to school, don’t take a bus or a taxi. Second, I will remember to turn off the lights when I leave the classroom.

Third, in my free time, I will collect the empty bottles and waste paper for recycling. The fourth idea is turning off the shower when I ‘m not using it. Fifth, it is imporment to save water and money.

Also, I won’t spend too much money on expensive things. Last, we had better not cut down the trees, we have to take care of the trees . I’ll try my best to save the energy, I hope I can do something for our country.

导语：你觉得创建文明城市的首要条件是什么?下面是yuwenmi小编为大家整理的优秀英语素材，欢迎阅读与借鉴，谢谢!

为配合我市开展“创建文明城市(build a civilized city)”活动，学校举办以How to Behave Well?为主题的英语征文比赛。现在请你根据所给提示内容，用英语写一篇80词左右参赛短文。

提示：1.衣着整洁;2.保持环境卫生;

3.待人有礼，乐于助人; 4.遵守交通规则; 5…….

要求：1.文章必须包括所给提示中1～4项内容，可展开思路，适当发挥;

2.文中不能出现考生的真实姓名、校名等。

In order to build a civilized city, we students should try our best to behave well in the activities.

It’s a good habit to keep our clothes clean and tidy. Our city should be kept clean every day. Don’t throw litter or spit about. It’s good manners to say “Thank you” and “Please”, and so on. We should never say dirty words. Be friendly to others and always ready to help the people in need. For example, when we are on a bus, we should give our seats to the old and the women with babies. We should also obey traffic rules. When the traffic lights are red, we should stop. And we’d better not talk or laugh loudly in public.

If everyone behaves well , our city will be more beautiful and more attractive.

【参考译文】

为了建设文明城市，我们学生应该尽力在活动中表现良好。

保持衣服干净整齐是一个好习惯。我们的城市应该每天保持清洁。不要乱扔垃圾或随地吐痰。说“谢谢”和“请”是礼貌的，等等。我们不应该说脏话。对别人友好，随时准备帮助需要帮助的人。例如，当我们在公共汽车上时，我们应该给老人和有婴儿的妇女让座。我们也应该遵守交通规则。当交通灯是红色的时候，我们应该停下来。我们最好不要在公共场合大声说话或大笑。

如果每个人都表现良好，我们的城市将会更美丽更迷人。