The earth is our home, and this home is being surrounded by garbage. As the masters of the 21st century, we cannot just worry and complain, but we must take action, and we must take green action. Garbage is not useless, and waste is not useless. It is not technically difficult to recycle and recycle garbage. The difficulty lies in the fact that waste is thrown away, mixed and piled up to become garbage. Therefore, as educated and civilized people in the new century, we should participate in the “easy-to-handle” garbage source classification activities to contribute to purification. Make a little contribution to our living space and give a piece of love.
Domestic waste is a by-product of human life. With the rapid development of social economy and the high concentration of urban population, the production of domestic waste is gradually increasing. General domestic waste can be divided into five categories: waste paper, plastic, glass, metal and biological waste. The main harms of garbage to human life and the environment are:
First, it occupies too much land. Garbage piled up on the outskirts of cities has occupied a large amount of farmland. Nowadays, the average Beijinger produces 440 kilograms of garbage per year, and the city’s annual output is about 4 million tons, which is equivalent to two and a half Jingshan Mountains. There are more than 4,500 garbage dump sites in Beijing, covering an area of ??more than 10,000 acres. Garbage also stays in nature for a long time: cigarette butts and woolen fabrics 1-5 years; orange peels 2 years; painted wooden boards 13 years; nylon fabrics 30-40 years; leather 50 years; cans 80-100 years; plastic 100 years —200 years; glass 1,000 years. To this end, we must not only create less waste, but also pay attention to waste classification, recycling, and turning waste into treasure. Use less disposable chopsticks, water cups, lunch boxes and other products and use more reusable products to reduce the consumption of precious forest resources; use less plastic bags and use shopping bags instead to reduce the harm of "white pollution" in the city; purchase fluorine-free refrigerators, Environmentally friendly appliances such as air conditioners protect the ozone layer; use less high-concentration detergents and use phosphorus-free laundry detergent to reduce water pollution.
Second, pollute the air. Garbage is a complex mixture. During transportation and open-air stacking, organic matter decomposes to produce odor and releases a large amount of ammonia, sulfide and other pollutants into the atmosphere, including more than 100 kinds of organic volatile gases. These releases contain many carcinogens and teratogens. Plastic film, paper scraps and dust fly in the wind to form "white pollution".
Third, polluting water bodies. Harmful components in garbage can easily wash into ground water bodies through rainwater. During the process of garbage stacking or pit filling, a large amount of acidic and alkaline organic pollutants will be produced, and heavy metals in the garbage will be dissolved. The leachate produced by garbage pollution sources will penetrate into the groundwater through the soil; if the garbage is directly discarded into rivers, lakes or oceans, it will cause more serious pollution. You see: plastic bottles and lunch boxes floating on the surface of the Summer Palace and the North Sea, plastic bags, bread paper, etc. scattered on the forest roads in Xiangshan and Badachu and hanging on branches. Some tourists only seek their own convenience, causing pollution to the tourism environment. If animals accidentally eat white garbage, it will not only harm their health, but also lead to death.
Advertising