看看垃圾桶里面。你的家人每天扔掉多少垃圾?每周?所有垃圾都去哪了?人们很容易认为我们丢弃的垃圾实际上消失了,但我们知道的更好。下面看看它离开罐头后所有垃圾的实际情况。一,事实。你知道吗,每小时,美国人扔掉250万个塑料瓶?每天,生活在美国的每个人平均产生2千克(约4.4磅)的垃圾。城市固体废物被定义为社区内的家庭,企业,学校和其他组织生产的垃圾。它不同于其他产生的废物,如建筑垃圾,农业废物或工业废物。我们利用三种方法处理所有这些废物 – 焚烧,垃圾填埋和回收。焚烧是一种涉及燃烧固体废物的废物处理过程。具体而言,焚烧炉燃烧废物流中的有机物质。垃圾填埋场是地面上的一个洞,用于埋设固体废物。垃圾填埋场是最古老和最常见的废物处理方法。回收利用是回收原材料并重新利用它们来创造新产品的过程。从环境角度来看,焚烧具有一些优势。焚化炉不占用太多空间。它们也不会污染地下水。有些设施甚至利用燃烧废物产生的热量来发电。焚烧也有许多缺点。它们向空气中释放出大量污染物,大约10%的燃烧物被遗留下来,必须以某种方式处理。焚烧炉的建造和运营成本也很高。在垃圾填埋场发明之前,生活在欧洲社区的大多数人只是将垃圾扔进街道或城门外。但是在19世纪左右的某个时候,人们开始意识到被所有垃圾吸引的害虫正在传播疾病。当地社区开始挖掘垃圾填埋场,这些垃圾填埋场只是地面上的开放式洞穴,居民可以在那里处理垃圾。但是,尽管将废物排除在街道上是好事,但是镇上的官员们意识到这些难看的垃圾场仍然吸引了害虫。他们还从废物中浸出化学物质,形成污染物,称为渗滤液,流入溪流和湖泊,或渗入当地的地下水供应。

新西兰奥克兰大学环境Assignment代写:废物回收利用

Look inside the trash can. How much garbage does your family throw away every day? weekly? Where is all the garbage going? It is easy to think that the rubbish we discarded has actually disappeared, but we know better. Let’s take a look at the actual situation of all the garbage after it leaves the can. First, the facts. Do you know that every hour, Americans throw away 2.5 million plastic bottles? Every day, everyone living in the United States produces an average of 2 kilograms (about 4.4 pounds) of garbage. Municipal solid waste is defined as waste produced by households, businesses, schools and other organizations within the community. It is different from other wastes produced, such as construction waste, agricultural waste or industrial waste. We use all three methods to treat all of these wastes – incineration, landfill and recycling. Incineration is a waste treatment process involving the burning of solid waste. Specifically, the incinerator burns organic matter in the waste stream. A landfill is a hole in the ground that is used to bury solid waste. Landfills are the oldest and most common method of waste disposal. Recycling is the process of recycling raw materials and reusing them to create new products. From an environmental point of view, incineration has some advantages. The incinerator does not take up too much space. They also do not pollute groundwater. Some facilities even use the heat generated by burning waste to generate electricity. Incineration also has many shortcomings. They release a large amount of pollutants into the air, and about 10% of the burned material is left behind and must be disposed of in some way. The cost of building and operating the incinerator is also high. Before the landfill was invented, most people living in European communities simply threw rubbish into the streets or outside the city gates. But sometime around the 19th century, people began to realize that pests attracted by all garbage were spreading diseases. The local community began to dig up landfills, which are just open caves on the ground where residents can dispose of them. But while it’s good to exclude waste on the streets, town officials realize that these ugly dumps still attract pests. They also leach chemicals from waste to form pollutants, called leachates, into streams and lakes, or into local groundwater supplies.

发表评论

电子邮件地址不会被公开。 必填项已用*标注