垃圾在人们的眼中也许是一些又脏又臭，毫无用处的废物。但是我知道，如果把垃圾作分类，再经过处理，是可以把废物变成宝的。

当你走在大街上的时候，你会被那些色彩缤纷，形状各异的垃圾桶吸引住，那些就是环保垃圾桶。环保垃圾桶里面分为可回收类和不可回收类两种。

可回收类里，有我们平时喝得最多的可乐瓶，塑料袋和一次性餐盒等……如果把这些分类好的废塑料处理后，还可以制成纽扣，笔筒，文件夹等有用的东西。还有我们每天丢弃的剩饭残渣，菜叶果皮等厨房垃圾，这些发霉难闻的东西，如果不作分类，随意地摆放，会造成环境的污染，滋生大量的蚊蝇和细菌，直接危害我们的身体健康。但如果把这些垃圾分类好，经过处理，用来制造很好的有机肥料，用来种菜，种花，是很有用的。用它们种出来的蔬菜又健康又好吃。

其实，垃圾分类的好处还有很多，例如废电池，纸张等都是回收价值很高的东西。你只要在扔垃圾的不经意间作出选择。一个举手之劳，就可以保护我们的环境，减少污染，又可以把废物变成宝，让废物循环再用，真是一举两得。

垃圾分类可以减少占地,去掉可以回收的、不易降解的物质,减少垃圾数量可达60%以上。可以减少污染,如废弃的电池含有金属汞、镉等有毒的物质,会造成有害的污染。

垃圾分类减少污染

目前我国的垃圾处理多采用卫生填埋甚至简易填埋的方式，占用上万亩土地；并且虫蝇乱飞，污水四溢，臭气熏天，严重污染环境。

垃圾分类可以培养我们一个绿色健康的生活习惯。要知道实行垃圾分类的话一下子会改变很多人一生的丢垃圾行为习惯，但是这个改变肯定是值得去做的。

Garbage is divided into four categories: Garbag that can not be recovered and used. Kitchen husk，leaves，leftovers ，etc. collected with green plastic containers.Waste that can be recovered and used. Paper，plastic，glass，fabric and metal，etc.，are collected in blue plastic containers.Toxic and hazardous waste. Scrap batteries，expired medicines，paint buckets，mercury thermometers，fluorescent tubes and household chemicals，etc.are collected in red plastic containers.Other rubbish，collected in gray or yellow plastic containers.

It’s no doubt that university campuses will produce a large amount of rubbish everyday, however, there are fewer college students paying attention to its classification.

Factually waste separation is vital to create an environment-friendly campus. Firstly, waste separation does great contribution to the environmental protection. Since some of waste is recyclable, while other is unrecyclable, if all the students could voluntarily differentiate recyclable rubbish from unrecyclable rubbish, the risk of the environmental pollution will be greatly reduced. Secondly, waste separation could save a lot of energy and time on its processing.

With the rapid increase in the amount of rubbish at the campus, rubbish classification does not permit of any delay. On the one hand, as the well- educated people, college students should act as hosts of the universities and separate waste from this moment in their daily life. On the other hand, university authorities should strengthen students’ awareness of environmental protection and suide students to separate waste in a reasonable way.

　　小时候，我对垃圾分类一无所知，所以投错垃圾桶是经常发生的事。有一次，我又投错了垃圾桶——

　　一个星期天，我们出去野餐。我喝了一瓶养乐多，喝完后我就把空瓶子随手扔进了其它垃圾桶。我正得意洋洋地想告诉妈妈我仍对了时，妈妈却比我还快半拍：“袁潇，错了，空瓶子不是其它垃圾的。”我妈这盆冷水正好不偏不倚地泼到了我骄傲地已经发烫的脸上，把我的兴奋劲儿，泼到了九霄云外。

　　一回到家，我立刻拿来平板电脑，用“百度”和妈妈一起查了起来。原来，把空瓶子投进可回收垃圾桶是最好的扔进了可回收垃圾桶，就可以把塑料变成燃料、用来发电、油化、建筑应用、复合再生、合成新材料、制取基本化学原料、人造沙……

　　原来这个小小的举动有那么大的用处啊!让我们继续垃圾分类，人人为保护环境出一份力!